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Sanchez MJ, Mossayebi A, Sigaroodi S, Apaflo JN, Galvan MJ, Min K, Agullo FJ, Wagler A, Bajpeyi S. Effects of neuromuscular electrical stimulation on glycemic control: a systematic review and meta-analysis. Front Endocrinol (Lausanne) 2023; 14:1222532. [PMID: 37583429 PMCID: PMC10424918 DOI: 10.3389/fendo.2023.1222532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Accepted: 07/12/2023] [Indexed: 08/17/2023] Open
Abstract
Background Physical inactivity increases the risk for metabolic diseases such as obesity and type 2 diabetes. Neuromuscular electrical stimulation (NMES) is an effective method to induce muscle contraction, particularly for populations with physical impairments and/or metabolic diseases. However, its effectiveness to improve glycemic control is unclear. This review aimed to determine the effectiveness of NMES on glycemic control. Methods Electronic search consisted of MEDLINE (PubMed), EMBASE, Cochrane Library, Google Scholar, and Web of Science to identify studies that investigated the effects of NMES on glycemic control for this systematic review. The meta-analysis consists of the studies designed as randomized controlled trials. Effect sizes were calculated as the standardized mean difference (SMD) and meta-analysis was conducted using a random-effects model. Results Thirty-five studies met the inclusion criteria for systematic review and of those, nine qualified for the meta-analysis. Existing evidence suggested that NMES effectively improves glycemic control predominantly in middle-aged and elderly population with type 2 diabetes, obesity, and spinal cord injury. The meta-analysis is comprised of 180 participants and reported that NMES intervention lowered fasting blood glucose (SMD: 0.48; 95% CI: 0.17 to 0.78; p=0.002; I²=0%). Additional analysis using the primary measures reported by each study to indicate glycemic control (i.e., OGTT, HOMA-IR, and fasting glucose) also confirmed a significant effect of NMES on improving glycemic control (SMD: 0.41; 95% CI, 0.09 to 0.72; p=0.01; I²=11%). NMES protocol varied across studies and requires standardization. Conclusion NMES could be considered as a therapeutic strategy to improve glycemic control in populations with physical impairments and/or metabolic disorders. Systematic review registration https://www.crd.york.ac.uk/prospero/, identifier CRD42020192491.
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Affiliation(s)
- Michael J. Sanchez
- Metabolic, Nutrition, and Exercise Research (MiNER) Laboratory, Department of Kinesiology, The University of Texas at El Paso, El Paso, TX, United States
| | - Ali Mossayebi
- Metabolic, Nutrition, and Exercise Research (MiNER) Laboratory, Department of Kinesiology, The University of Texas at El Paso, El Paso, TX, United States
| | - Solmaz Sigaroodi
- Metabolic, Nutrition, and Exercise Research (MiNER) Laboratory, Department of Kinesiology, The University of Texas at El Paso, El Paso, TX, United States
| | - Jehu N. Apaflo
- Metabolic, Nutrition, and Exercise Research (MiNER) Laboratory, Department of Kinesiology, The University of Texas at El Paso, El Paso, TX, United States
| | - Michelle J. Galvan
- Metabolic, Nutrition, and Exercise Research (MiNER) Laboratory, Department of Kinesiology, The University of Texas at El Paso, El Paso, TX, United States
| | - Kisuk Min
- Muscle Molecular Physiology Laboratory, Department of Kinesiology, The University of Texas at El Paso, El Paso, TX, United States
| | | | - Amy Wagler
- Department of Mathematical Sciences, The University of Texas at El Paso, El Paso, TX, United States
| | - Sudip Bajpeyi
- Metabolic, Nutrition, and Exercise Research (MiNER) Laboratory, Department of Kinesiology, The University of Texas at El Paso, El Paso, TX, United States
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2
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Gibbs JC, Patsakos EM, Maltais DB, Wolfe DL, Gagnon DH, Craven BC. Rehabilitation interventions to modify endocrine-metabolic disease risk in individuals with chronic spinal cord injury living in the community (RIISC): A systematic search and review of prospective cohort and case-control studies. J Spinal Cord Med 2023; 46:6-25. [PMID: 33596167 PMCID: PMC9897753 DOI: 10.1080/10790268.2020.1863898] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
CONTEXT Endocrine-metabolic disease (EMD) is associated with functional disability, social isolation, hospitalization and even death in individuals living with a chronic spinal cord injury (SCI). There is currently very low-quality evidence that rehabilitation interventions can reduce EMD risk during chronic SCI. Non-randomized trials and alternative study designs are excluded from traditional knowledge synthesis. OBJECTIVE To characterize evidence from level 3-4 studies evaluating rehabilitation interventions for their effectiveness to improve EMD risk in community-dwelling adults with chronic SCI. METHODS Systematic searches of MEDLINE PubMed, EMBASE Ovid, CINAHL, Cochrane Database of Systematic Reviews, and PsychInfo were completed. All longitudinal trials, prospective cohort, case-control studies, and case series evaluating the effectiveness of rehabilitation/therapeutic interventions to modify/associate with EMD outcomes in adults with chronic SCI were eligible. Two authors independently selected studies and abstracted data. Mean changes from baseline were reported for EMD outcomes. The Downs and Black Checklist was used to rate evidence quality. RESULTS Of 489 articles identified, 44 articles (N = 842) were eligible for inclusion. Individual studies reported statistically significant effects of electrical stimulation-assisted training on lower-extremity bone outcomes, and the combined effects of exercise and dietary interventions to improve body composition and cardiometabolic biomarkers (lipid profiles, glucose regulation). In contrast, there were also reports of no clinically important changes in EMD outcomes, suggesting lower quality evidence (study bias, inconsistent findings). CONCLUSION Longitudinal multicentre pragmatic studies involving longer-term exercise and dietary intervention and follow-up periods are needed to fully understand the impact of these rehabilitation approaches to mitigate EMD risk. Our broad evaluation of prospective cohort and case-control studies provides new perspectives on alternative study designs, a multi-impairment paradigm approach of studying EMD outcomes, and knowledge gaps related to SCI rehabilitation.
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Affiliation(s)
- Jenna C. Gibbs
- Department of Kinesiology and Physical Education, Faculty of Education, McGill University, Montréal, QC, Canada,Correspondence to: Jenna C. Gibbs, Department of Kinesiology and Physical Education, McGill University, Currie Gym Office A208, 475 Pine Avenue West, Montreal, Quebec, H2W 1S4, Canada; Ph: 514-398-4184 ext. 00473.
| | - Eleni M. Patsakos
- KITE, Toronto Rehabilitation Institute – University Health Network, Toronto, ON, Canada
| | - Desiree B. Maltais
- Department of Rehabilitation, Faculty of Medicine, Université Laval, Quebec City, QC, Canada
| | - Dalton L. Wolfe
- Parkwood Institute Research, Lawson Health Research Institute, London, ON, Canada,Department of Physical Medicine and Rehabilitation, Western University, London, ON, Canada
| | - Dany H. Gagnon
- Centre intégré universitaire de santé et de services sociaux (CIUSSS) du Centre-Sud-de-l'Île-de-Montréal, Montréal, QC, Canada,School of Rehabilitation, Faculty of Medicine, Université de Montréal, Montréal, QC, Canada
| | - B. Catharine Craven
- KITE, Toronto Rehabilitation Institute – University Health Network, Toronto, ON, Canada,Division of Physical Therapy and Rehabilitation, Department of Medicine, University of Toronto, Toronto, ON, Canada
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Richley Geigle P, Ogonowska-Slodownik A, Smith JE, James K, Scott WH. Metabolic and cardiopulmonary impact of aquatic exercise and nutritional guidance for four individuals with chronic motor incomplete spinal cord injury: a case series. Physiother Theory Pract 2022:1-10. [PMID: 35196186 DOI: 10.1080/09593985.2022.2042632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND Persons living with chronic spinal cord injury (SCI) demonstrate an increased risk of cardiovascular diseases. Purpose The aim of this report was to assess the cardiopulmonary and metabolic impact of prescribed aquatic exercise in combination with dietary guidance for four individuals experiencing chronic SCI. CASE DESCRIPTION We measured peak oxygen consumption (peak VO2), resting energy expenditure (REE), weight, food logs, fasting glucose, insulin and glycated hemoglobin (HbA1C) in four men with incomplete SCI, aged 34 to 63 years. INTERVENTION The men received a group aquatic exercise program three times per week for 10 weeks, and a weekly individual nutritional consultation by phone. OUTCOMES Peak VO2 increased by 7.9% and 34.4% in participants #3 and #4 and decreased by 12% and 16.4% in #1 and #2. Glucose values decreased by 19.6% and 14.2% for #1 and #3, and increased by 9.3% for both #2 and #4. Body mass decreased by 9.9%, 3.0% and 5.7% for participants #1, #2 and #3, but demonstrated no change for participant #4. Dietary guidance and education produced positive changes, including reduced fat, carbohydrate, daily sugar, and average calorie intake. CONCLUSION Moderate exercise with weekly nutritional guidance appeared to positively impact body mass and dietary selections with varied metabolic and cardiopulmonary results.
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Affiliation(s)
| | - Anna Ogonowska-Slodownik
- Faculty of Rehabilitation, Jozef Pilsudski University of Physical Education in Warsaw, Warsaw, Poland
| | | | | | - William H Scott
- Baltimore Veterans Administration Medical Center, Baltimore, MD, USA
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4
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Atkins KD, Bickel CS. Effects of functional electrical stimulation on muscle health after spinal cord injury. Curr Opin Pharmacol 2021; 60:226-231. [PMID: 34464934 DOI: 10.1016/j.coph.2021.07.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/16/2021] [Accepted: 07/26/2021] [Indexed: 10/20/2022]
Abstract
Spinal cord injury is a devastating condition interrupting voluntary movement and motor control. In response to unloading, skeletal muscle undergoes numerous adaptations, including rapid and profound atrophy, intramuscular fat accumulation, impaired muscular glucose metabolism and decreased force generation and muscle performance. Functional electrical stimulation (FES) involves electrically stimulating affected muscles to contract in a coordinated manner to create a functional movement or task. Effects of FES-cycling, rowing and resistance training on muscle health are described here. Briefly, FES-cycling and resistance training may slow muscle atrophy or facilitate muscle hypertrophy, and all modalities benefit muscle composition and performance to some extent. These interventions show promise as future rehabilitative tools after spinal cord injury.
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Affiliation(s)
- Kelly D Atkins
- Department of Physical Therapy, Samford University, Birmingham, AL, USA
| | - C Scott Bickel
- Department of Physical Therapy, Samford University, Birmingham, AL, USA.
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5
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Figoni SF, Dolbow DR, Crawford EC, White ML, Pattanaik S. Does aerobic exercise benefit persons with tetraplegia from spinal cord injury? A systematic review. J Spinal Cord Med 2021; 44:690-703. [PMID: 32043944 PMCID: PMC8477928 DOI: 10.1080/10790268.2020.1722935] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
CONTEXT This review synthesizes the findings of previous research studies on the cardiovascular and metabolic benefits of aerobic exercise for individuals with tetraplegia secondary to spinal cord injury. They are often less active due to muscular paralysis, sensory loss, and sympathetic nervous system dysfunction that result from injury. Consequently, these persons are at higher risk for exercise intolerance and secondary health conditions. OBJECTIVE To evaluate the evidence concerning efficacy of aerobic exercise training for improving health and exercise performance in persons with tetraplegia from cervical injury. METHODS The search engines PubMed and Google Scholar were used to locate published research. The final 75 papers were selected on the basis of inclusion criteria. The studies were then rank-ordered using Physiotherapy Evidence Database. RESULTS Studies combining individuals with tetraplegia and paraplegia show that voluntary arm-crank training can increase mean peak power output by 33%. Functional electrical stimulation leg cycling was shown to induce higher peak cardiac output and stroke volume than arm-crank exercise. A range of peak oxygen uptake (VO2peak) values have been reported (0.57-1.32 L/min). Both VO2peak and cardiac output may be enhanced via increased muscle pump in the legs and venous return to the heart. Hybrid exercise (arm-crank and functional electrical stimulation leg cycling) can result in greater peak oxygen uptake and cardiovascular responses. CONCLUSION Evidence gathered from this systematic review of literature is inconclusive due to the lack of research focusing on those with tetraplegia. Higher power studies (level 1-3) are needed with the focus on those with tetraplegia.
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Affiliation(s)
- Stephen F Figoni
- Spinal Cord Injury/Disorders Healthcare Group (128), Tibor Rubin VA Medical Center, Long Beach, California, USA
| | - David R Dolbow
- Physical Therapy Program, William Carey University, Hattiesburg, Mississippi, USA
| | - Edwin C Crawford
- Physical Therapy Program, William Carey University, Hattiesburg, Mississippi, USA
| | - Margaret L White
- Physical Therapy Program, William Carey University, Hattiesburg, Mississippi, USA
| | - Sambit Pattanaik
- College of Osteopathic Medicine, William Carey University, Hattiesburg, Mississippi, USA
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6
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McMillan DW, Astorino TA, Correa MA, Nash MS, Gater DR. Virtual Strategies for the Broad Delivery of High Intensity Exercise in Persons With Spinal Cord Injury: Ongoing Studies and Considerations for Implementation. Front Sports Act Living 2021; 3:703816. [PMID: 34423292 PMCID: PMC8377288 DOI: 10.3389/fspor.2021.703816] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 07/08/2021] [Indexed: 11/13/2022] Open
Abstract
Spinal cord injury (SCI) results in a multitude of metabolic co-morbidities that can be managed by exercise. As in the non-injured population, manipulation of exercise intensity likely allows for fruitful optimization of exercise interventions targeting metabolic health in persons with SCI. In this population, interventions employing circuit resistance training (CRT) exhibit significant improvements in outcomes including cardiorespiratory fitness, muscular strength, and blood lipids, and recent exploration of high intensity interval training (HIIT) suggests the potential of this strategy to enhance health and fitness. However, the neurological consequences of SCI result in safety considerations and constrain exercise approaches, resulting in the need for specialized exercise practitioners. Furthermore, transportation challenges, inaccessibility of exercise facilities, and other barriers limit the translation of high intensity “real world” exercise strategies. Delivering exercise via online (“virtual”) platforms overcomes certain access barriers while allowing for broad distribution of high intensity exercise despite the limited number of population-specific exercise specialists. In this review, we initially discuss the need for “real world” high intensity exercise strategies in persons with SCI. We then consider the advantages and logistics of using virtual platforms to broadly deliver high intensity exercise in this population. Safety and risk mitigation are considered first followed by identifying strategies and technologies for delivery and monitoring of virtual high intensity exercise. Throughout the review, we discuss approaches from previous and ongoing trials and conclude by giving considerations for future efforts in this area.
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Affiliation(s)
- David W McMillan
- Christine E. Lynn Rehabilitation Center for the Miami Project to Cure Paralysis, UHealth/Jackson Memorial, Miami, FL, United States.,Department of Physical Medicine & Rehabilitation, University of Miami Leonard M. Miller School of Medicine, Miami, FL, United States
| | - Todd A Astorino
- Department of Kinesiology, California State University San Marcos, San Marcos, CA, United States
| | - Michael A Correa
- Christine E. Lynn Rehabilitation Center for the Miami Project to Cure Paralysis, UHealth/Jackson Memorial, Miami, FL, United States
| | - Mark S Nash
- Christine E. Lynn Rehabilitation Center for the Miami Project to Cure Paralysis, UHealth/Jackson Memorial, Miami, FL, United States.,Department of Physical Medicine & Rehabilitation, University of Miami Leonard M. Miller School of Medicine, Miami, FL, United States.,Department of Neurological Surgery, University of Miami Leonard M. Miller School of Medicine, Miami, FL, United States
| | - David R Gater
- Christine E. Lynn Rehabilitation Center for the Miami Project to Cure Paralysis, UHealth/Jackson Memorial, Miami, FL, United States.,Department of Physical Medicine & Rehabilitation, University of Miami Leonard M. Miller School of Medicine, Miami, FL, United States
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7
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van der Scheer JW, Goosey-Tolfrey VL, Valentino SE, Davis GM, Ho CH. Functional electrical stimulation cycling exercise after spinal cord injury: a systematic review of health and fitness-related outcomes. J Neuroeng Rehabil 2021; 18:99. [PMID: 34118958 PMCID: PMC8196442 DOI: 10.1186/s12984-021-00882-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 05/19/2021] [Indexed: 01/08/2023] Open
Abstract
OBJECTIVES The objective of this review was to summarize and appraise evidence on functional electrical stimulation (FES) cycling exercise after spinal cord injury (SCI), in order to inform the development of evidence-based clinical practice guidelines. METHODS PubMed, the Cochrane Central Register of Controlled Trials, EMBASE, SPORTDiscus, and CINAHL were searched up to April 2021 to identify FES cycling exercise intervention studies including adults with SCI. In order to capture the widest array of evidence available, any outcome measure employed in such studies was considered eligible. Two independent reviewers conducted study eligibility screening, data extraction, and quality appraisal using Cochranes' Risk of Bias or Downs and Black tools. Each study was designated as a Level 1, 2, 3 or 4 study, dependent on study design and quality appraisal scores. The certainty of the evidence for each outcome was assessed using GRADE ratings ('High', 'Moderate', 'Low', or 'Very low'). RESULTS Ninety-two studies met the eligibility criteria, comprising 999 adults with SCI representing all age, sex, time since injury, lesion level and lesion completeness strata. For muscle health (e.g., muscle mass, fiber type composition), significant improvements were found in 3 out of 4 Level 1-2 studies, and 27 out of 32 Level 3-4 studies (GRADE rating: 'High'). Although lacking Level 1-2 studies, significant improvements were also found in nearly all of 35 Level 3-4 studies on power output and aerobic fitness (e.g., peak power and oxygen uptake during an FES cycling test) (GRADE ratings: 'Low'). CONCLUSION Current evidence indicates that FES cycling exercise improves lower-body muscle health of adults with SCI, and may increase power output and aerobic fitness. The evidence summarized and appraised in this review can inform the development of the first international, evidence-based clinical practice guidelines for the use of FES cycling exercise in clinical and community settings of adults with SCI. Registration review protocol: CRD42018108940 (PROSPERO).
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Affiliation(s)
- Jan W van der Scheer
- Peter Harrison Centre for Disability Sport, School for Sport, Exercise and Health Sciences, Loughborough University, Epinal Way, Loughborough, LE11 3TU, UK
- The Healthcare Improvement Studies (THIS) Institute, Department of Public Health and Primary Care, School of Clinical Medicine, University of Cambridge, Cambridge Biomedical Campus, Clifford Allbutt Building, Cambridge, CB2 OAH, UK
| | - Victoria L Goosey-Tolfrey
- Peter Harrison Centre for Disability Sport, School for Sport, Exercise and Health Sciences, Loughborough University, Epinal Way, Loughborough, LE11 3TU, UK
| | - Sydney E Valentino
- Department of Kinesiology, McMaster University, Room IWC EG115, 1280 Main St. W., Hamilton, ON, L8S 4K1, Canada
| | - Glen M Davis
- Discipline of Exercise and Sport Sciences, Faculty of Medicine and Health, Sydney School of Health Sciences, University of Sydney, Sydney, NSW, 2006, Australia
| | - Chester H Ho
- Division of Physical Medicine & Rehabilitation, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, AB, T6G 2R3, Canada.
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8
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Cajigas I, Vedantam A. Brain-Computer Interface, Neuromodulation, and Neurorehabilitation Strategies for Spinal Cord Injury. Neurosurg Clin N Am 2021; 32:407-417. [PMID: 34053728 DOI: 10.1016/j.nec.2021.03.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
As neural bypass interfacing, neuromodulation, and neurorehabilitation continue to evolve, there is growing recognition that combination therapies may achieve superior results. This article briefly introduces these broad areas of active research and lays out some of the current evidence for their use for patients with spinal cord injury.
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Affiliation(s)
- Iahn Cajigas
- Department of Neurosurgery, University of Miami, 1095 Northwest 14th Terrace (D4-6), Miami, FL 33136, USA.
| | - Aditya Vedantam
- Department of Neurosurgery, University of Miami, 1095 Northwest 14th Terrace (D4-6), Miami, FL 33136, USA
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9
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Farkas GJ, Swartz AM, Gorgey AS, Berg AS, Gater DR. Acute exercise improves glucose effectiveness but not insulin sensitivity in paraplegia. Disabil Rehabil 2021; 44:4656-4662. [PMID: 33905292 DOI: 10.1080/09638288.2021.1913517] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
PURPOSE To determine the effect of a single session of arm crank ergometry (ACE) exercise on carbohydrate metabolism immediately and 24 h after the exercise bout in paraplegia and able-bodied controls (ABC). METHODS Paraplegia (n = 11; 91% male; age 34.8 ± 11.4 years) and ABC (n = 6; 67% male; age 28.7 ± 11.9 years) underwent 45 min of ACE exercise at 75% VO2Peak. Glucose effectiveness (Sg) and insulin sensitivity (Si) were assessed. Data were analyzed with two-way mixed analysis of variance and Wilcoxon rank-sum or signed-rank post hoc test. RESULTS VO2Peak was lower in paraplegia versus ABC (22.3 ± 3.99 vs. 30.8 ± 2.9 ml/kg/min, p = 0.003). Si was lower paraplegia vs. ABC immediately following exercise (3.28 ± 1.6 vs. 5.30 ± 1.2 min-1/[µU/mL-1]x10-4, p = 0.023). In paraplegia, Sg was higher immediately after exercise than baseline (B: 0.021 ± 0.01 vs. I: 0.026 ± 0.01 min-1, p = 0.037). Twenty-four hours after exercise, Sg was lower than immediately following exercise (I: 0.026 ± 0.01 vs. 24: 0.017 ± 0.01 min-1, p = 0.001), but not different than baseline in paraplegia (B: 0.021 ± 0.01 vs. 24: 0.017 ± 0.01 min-1, p = 0.216). In the ABC group, Sg was not different at all timepoints (p > 0.05). Si did not differ at all timepoints (p > 0.05). CONCLUSION A single bout of ACE at 75% VO2Peak helped to acutely control glucose metabolism in those with paraplegia by increasing Sg by nearly 27%; however, this was not sustained past 24-hours. These data provide support for regular exercise engagement.Implications for RehabilitationDisorders of glucose metabolism have been reported at a greater prevalence in persons with spinal cord injury.A single bout of arm crank ergometry exercise at 75% VO2Peak helped to acutely control glucose metabolism persons with paraplegia; however, this was not sustained past 24 h.These data provide support for regular exercise engagement in persons with paraplegia.
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Affiliation(s)
- Gary J Farkas
- Department of Physical Medicine and Rehabilitation, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Ann M Swartz
- Department of Kinesiology, University of Wisconsin Milwaukee, Milwaukee, WI, USA
| | - Ashraf S Gorgey
- Spinal Cord Injury and Disorders Center, Hunter Holmes McGuire VA Medical Center, Richmond, VA, USA
| | - Arthur S Berg
- Department of Public Health Sciences, Penn State College of Medicine, Hershey, PA, USA
| | - David R Gater
- Department of Physical Medicine and Rehabilitation, University of Miami Miller School of Medicine, Miami, FL, USA
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10
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Goldsmith JA, Ennasr AN, Farkas GJ, Gater DR, Gorgey AS. Role of exercise on visceral adiposity after spinal cord injury: a cardiometabolic risk factor. Eur J Appl Physiol 2021; 121:2143-2163. [PMID: 33891156 DOI: 10.1007/s00421-021-04688-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 04/10/2021] [Indexed: 12/30/2022]
Abstract
PURPOSE Visceral adipose tissue (VAT) is associated with cardiometabolic disease risk in able-bodied (AB) populations. However, the underlying mechanisms of VAT-induced disease risk are unknown in persons with spinal cord injury (SCI). Potential mechanisms of VAT-induced cardiometabolic dysfunction in persons with SCI include systemic inflammation, liver adiposity, mitochondrial dysfunction, and anabolic deficiency. Moreover, how exercise interventions impact these mechanisms associated with VAT-induced cardiometabolic dysfunction are still being explored. METHODS A search for relevant scientific literature about the effects of exercise on VAT and cardiometabolic health was conducted on the PubMed database. Literature from reference lists was also included when appropriate. RESULTS Both aerobic and resistance exercise training beneficially impact health and VAT mass via improving mitochondrial function, glucose effectiveness, and inflammatory signaling in SCI and AB populations. Specifically, aerobic exercise appears to also modulate cellular senescence in AB populations and animal models, while resistance exercise seems to augment anabolic signaling in persons with SCI. CONCLUSIONS The current evidence supports regular engagement in exercise to reduce VAT mass and the adverse effects on cardiometabolic health in persons with SCI. Future research is needed to further elucidate the precise mechanisms by which VAT negatively impacts health following SCI. This will likely facilitate the development of rehabilitation protocols that target VAT reduction in persons with SCI.
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Affiliation(s)
- Jacob A Goldsmith
- Spinal Cord Injury and Disorders Center, Central Virginia VA Health Care System, 1201 Broad Rock Boulevard, Richmond, VA, 23249, USA
| | - Areej N Ennasr
- Spinal Cord Injury and Disorders Center, Central Virginia VA Health Care System, 1201 Broad Rock Boulevard, Richmond, VA, 23249, USA
| | - Gary J Farkas
- Department of Physical Medicine and Rehabilitation, University of Miami Miller School of Medicine, Miami, FL, 33136, USA
| | - David R Gater
- Department of Physical Medicine and Rehabilitation, University of Miami Miller School of Medicine, Miami, FL, 33136, USA
| | - Ashraf S Gorgey
- Spinal Cord Injury and Disorders Center, Central Virginia VA Health Care System, 1201 Broad Rock Boulevard, Richmond, VA, 23249, USA. .,Department of Physical Medicine and Rehabilitation, Virginia Commonwealth University, Richmond, VA, 23298, USA.
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11
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Gordon PS, Farkas GJ, Gater DR. Neurogenic Obesity-Induced Insulin Resistance and Type 2 Diabetes Mellitus in Chronic Spinal Cord Injury. Top Spinal Cord Inj Rehabil 2021; 27:36-56. [PMID: 33814882 DOI: 10.46292/sci20-00063] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The population with SCI is at a significant risk for both insulin resistance and type 2 diabetes mellitus (T2DM) secondary to neurogenic obesity. The prevalence of insulin resistance and T2DM in persons with SCI suggests that disorders of carbohydrate metabolism are at epidemic proportions within the population. However, the true frequency of such disorders may be underestimated because biomarkers of insulin resistance and T2DM used from the population without SCI remain nonspecific and may in fact fail to identify true cases that would benefit from intervention. Furthermore, diet and exercise have been used to help mitigate neurogenic obesity, but results on disorders of carbohydrate metabolism remain inconsistent, likely because of the various ways carbohydrate metabolism is assessed. The objective of this article is to review current literature on the prevalence and likely mechanisms driving insulin resistance and T2DM in persons with SCI. This article also explores the various assessments and diagnostic criteria used for insulin resistance and T2DM and briefly discusses the effects of exercise and/or diet to mitigate disorders of carbohydrate metabolism brought on by neurogenic obesity.
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Affiliation(s)
- Phillip S Gordon
- Department of Physical Medicine and Rehabilitation, University of Miami Miller School of Medicine, Miami, Florida
| | - Gary J Farkas
- Department of Physical Medicine and Rehabilitation, University of Miami Miller School of Medicine, Miami, Florida
| | - David R Gater
- Department of Physical Medicine and Rehabilitation, University of Miami Miller School of Medicine, Miami, Florida
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12
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McMillan DW, Maher JL, Jacobs KA, Nash MS, Gater DR. Exercise Interventions Targeting Obesity in Persons With Spinal Cord Injury. Top Spinal Cord Inj Rehabil 2021; 27:109-120. [PMID: 33814889 PMCID: PMC7983638 DOI: 10.46292/sci20-00058] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Spinal cord injury (SCI) results in an array of cardiometabolic complications, with obesity being the most common component risk of cardiometabolic disease (CMD) in this population. Recent Consortium for Spinal Cord Medicine Clinical Practice Guidelines for CMD in SCI recommend physical exercise as a primary treatment strategy for the management of CMD in SCI. However, the high prevalence of obesity in SCI and the pleiotropic nature of this body habitus warrant strategies for tailoring exercise to specifically target obesity. In general, exercise for obesity management should aim primarily to induce a negative energy balance and secondarily to increase the use of fat as a fuel source. In persons with SCI, reductions in the muscle mass that can be recruited during activity limit the capacity for exercise to induce a calorie deficit. Furthermore, the available musculature exhibits a decreased oxidative capacity, limiting the utilization of fat during exercise. These constraints must be considered when designing exercise interventions for obesity management in SCI. Certain forms of exercise have a greater therapeutic potential in this population partly due to impacts on metabolism during recovery from exercise and at rest. In this article, we propose that exercise for obesity in SCI should target large muscle groups and aim to induce hypertrophy to increase total energy expenditure response to training. Furthermore, although carbohydrate reliance will be high during activity, certain forms of exercise might induce meaningful postexercise shifts in the use of fat as a fuel. General activity in this population is important for many components of health, but low energy cost of daily activities and limitations in upper body volitional exercise mean that exercise interventions targeting utilization and hypertrophy of large muscle groups will likely be required for obesity management.
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Affiliation(s)
- David W. McMillan
- Christine E. Lynn Rehabilitation Center for the Miami Project to Cure Paralysis, UHealth/Jackson Memorial, Miami, Florida
- Department of Physical Medicine & Rehabilitation, University of Miami Leonard M. Miller School of Medicine, Miami, Florida
| | - Jennifer L. Maher
- Department of Health, University of Bath, Claverton Down, Bath, United Kingdom
| | - Kevin A. Jacobs
- Department of Kinesiology and Sport Sciences, University of Miami, Coral Gables, Florida
| | - Mark S. Nash
- Christine E. Lynn Rehabilitation Center for the Miami Project to Cure Paralysis, UHealth/Jackson Memorial, Miami, Florida
| | - David R. Gater
- Christine E. Lynn Rehabilitation Center for the Miami Project to Cure Paralysis, UHealth/Jackson Memorial, Miami, Florida
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Farrow M, Nightingale TE, Maher J, McKay CD, Thompson D, Bilzon JL. Effect of Exercise on Cardiometabolic Risk Factors in Adults With Chronic Spinal Cord Injury: A Systematic Review. Arch Phys Med Rehabil 2020; 101:2177-2205. [DOI: 10.1016/j.apmr.2020.04.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 03/27/2020] [Accepted: 04/11/2020] [Indexed: 12/14/2022]
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Shaughness M, Acs D, Brabazon F, Hockenbury N, Byrnes KR. Role of Insulin in Neurotrauma and Neurodegeneration: A Review. Front Neurosci 2020; 14:547175. [PMID: 33100956 PMCID: PMC7546823 DOI: 10.3389/fnins.2020.547175] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 08/13/2020] [Indexed: 12/15/2022] Open
Abstract
Insulin is a hormone typically associated with pancreatic release and blood sugar regulation. The brain was long thought to be “insulin-independent,” but research has shown that insulin receptors (IR) are expressed on neurons, microglia and astrocytes, among other cells. The effects of insulin on cells within the central nervous system are varied, and can include both metabolic and non-metabolic functions. Emerging data suggests that insulin can improve neuronal survival or recovery after trauma or during neurodegenerative diseases. Further, data suggests a strong anti-inflammatory component of insulin, which may also play a role in both neurotrauma and neurodegeneration. As a result, administration of exogenous insulin, either via systemic or intranasal routes, is an increasing area of focus in research in neurotrauma and neurodegenerative disorders. This review will explore the literature to date on the role of insulin in neurotrauma and neurodegeneration, with a focus on traumatic brain injury (TBI), spinal cord injury (SCI), Alzheimer’s disease (AD) and Parkinson’s disease (PD).
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Affiliation(s)
- Michael Shaughness
- Neuroscience Program, Uniformed Services University of the Health Sciences, Bethesda, MD, United States
| | - Deanna Acs
- Department of Anatomy, Physiology and Genetics, Uniformed Services University of the Health Sciences, Bethesda, MD, United States
| | - Fiona Brabazon
- Neuroscience Program, Uniformed Services University of the Health Sciences, Bethesda, MD, United States
| | - Nicole Hockenbury
- Department of Anatomy, Physiology and Genetics, Uniformed Services University of the Health Sciences, Bethesda, MD, United States
| | - Kimberly R Byrnes
- Department of Anatomy, Physiology and Genetics, Uniformed Services University of the Health Sciences, Bethesda, MD, United States
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Yarar-Fisher C, Li J, McLain A, Gower B, Oster R, Morrow C. Utilizing a low-carbohydrate/high-protein diet to improve metabolic health in individuals with spinal cord injury (DISH): study protocol for a randomized controlled trial. Trials 2019; 20:466. [PMID: 31362773 PMCID: PMC6664761 DOI: 10.1186/s13063-019-3520-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 06/11/2019] [Indexed: 12/12/2022] Open
Abstract
Background Metabolic disorders (e.g., impaired glucose tolerance, insulin resistance, and type 2 diabetes) are more prevalent in people with spinal cord injury (SCI) than able-bodied individuals. Dietary modification is a more cost-effective treatment option than pharmacological therapies for reducing the risk of metabolic dysfunction. Lowering carbohydrate, increasing protein, and maintaining a proper dietary fat intake are expected to induce favorable adaptations in glucose control, body fat distribution, and the composition of the gut microbiome. However, dietary modification has not been rigorously investigated in people with SCI. The purpose of this study is to determine if an 8-week low-carbohydrate/high-protein (LC/HP) dietary intervention will show improvements in clinically important metrics of metabolic function, body composition, the composition of gut bacteria, and quality of life. Methods/design We intend to recruit 100 participants with chronic traumatic SCI (3 years postinjury, C5–L2, American Spinal Injury Association impairment scale A–D, and aged 18–65 years) and insulin resistance, impaired glucose tolerance or untreated type 2 diabetes and randomly assign them to an 8-week LC/HP dietary intervention group or a control group. The daily LC/HP dietary intervention includes ~ 30% total energy as protein (1.6 g/kg per day) with a carbohydrate-to-protein ratio < 1.5 and fat intake set at ~ 30% of the total energy intake. The control group does not receive any dietary intervention and are continuing with their regular daily diets. Glucose tolerance, insulin sensitivity, β-cell function, body composition, gut microbiome composition, and quality of life measures are assessed at week 1, before starting the LC/HP dietary intervention, and at week 8, after completion of the LC/HP dietary intervention. Discussion New information derived from this project will result in the development of a low-cost, simple, self-administered LC/HP dietary intervention for improving metabolic function in individuals with chronic SCI, improved understanding of the composition of gut bacteria in SCI, and how a LC/HP dietary intervention alters gut bacteria composition. In addition, this project will improve our understanding of the relationship between metabolic function and quality of life in individuals with long-standing SCI. Trial registration ClinicalTrials.gov, NCT03207841. Registered on 5 June 2017. Electronic supplementary material The online version of this article (10.1186/s13063-019-3520-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ceren Yarar-Fisher
- Department of Physical Medicine and Rehabilitation, UAB School of Medicine, 190 Spain Rehabilitation Center, 1717 6th Avenue South, Birmingham, AL, 35233, USA.
| | - Jia Li
- Department of Physical Medicine and Rehabilitation, UAB School of Medicine, 190 Spain Rehabilitation Center, 1717 6th Avenue South, Birmingham, AL, 35233, USA
| | - Amie McLain
- Department of Physical Medicine and Rehabilitation, UAB School of Medicine, 190 Spain Rehabilitation Center, 1717 6th Avenue South, Birmingham, AL, 35233, USA
| | - Barbara Gower
- Department of Nutrition Sciences, UAB School of Health Professions, 1675 University Blvd., Webb 624C, Birmingham, AL, 35294, USA
| | - Robert Oster
- Department of Medicine/Division of Preventive Medicine, UAB School of Medicine, Medical Towers 642, 1717 11th Avenue South, Birmingham, AL, 35205, USA
| | - Casey Morrow
- Department of Cell, Developmental, and Integrative Biology, UAB School of Medicine, 1918 University Blvd, MCLM 680, Birmingham, AL, 35233, USA
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Graham K, Yarar-Fisher C, Li J, McCully KM, Rimmer JH, Powell D, Bickel CS, Fisher G. Effects of High-Intensity Interval Training Versus Moderate-Intensity Training on Cardiometabolic Health Markers in Individuals With Spinal Cord Injury: A Pilot Study. Top Spinal Cord Inj Rehabil 2019; 25:248-259. [PMID: 31548792 PMCID: PMC6743747 DOI: 10.1310/sci19-00042] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Background: Recent studies in nondisabled individuals have demonstrated that low-volume high-intensity interval training (HIIT) can improve cardiometabolic health similar to moderate-intensity training (MIT) despite requiring 20% of the overall time commitment. To date, there have been no studies assessing the effects of HIIT for improving cardiometabolic health in individuals with SCI. Objectives: The primary purpose of this pilot study was to compare the effects of 6 weeks of low-volume HIIT vs MIT using arm crank ergometer exercise to improve body composition, cardiovascular fitness, glucose tolerance, blood lipids, and blood pressure in a cohort of individuals with longstanding SCI. Methods: Participants were randomized to 6 weeks of HIIT or MIT arm crank exercise training. Aerobic capacity, muscular strength, blood lipids, glucose tolerance, blood pressure, and body composition were assessed at baseline and 6 weeks post training. Results: Seven individuals (6 male, 1 female; n = 3 in MIT and n = 4 in HIIT; mean age 51.3 ± 10.5 years) with longstanding SCI completed the study. The preliminary findings from this pilot study demonstrated that individuals with SCI randomized to either 6 weeks of HIIT or MIT displayed improvements in (a) insulin sensitivity, (b) cardiovascular fitness, and (c) muscular strength (p < .05). However, MIT led to greater improvements in arm fat percent and chest press strength compared to HIIT (p < .05). Conclusion: No differences between MIT and HIIT were observed. Both conditions led to improvements in insulin sensitivity, aerobic capacity, muscle strength, and blood lipids in individuals with SCI. Future larger cohort studies are needed to determine if the shorter amount of time required from HIIT is preferable to current MIT exercise recommendations.
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Affiliation(s)
- Kyle Graham
- Department of Human Studies, University of Alabama at Birmingham, Birmingham, Alabama
| | - Ceren Yarar-Fisher
- Department of Physical Medicine and Rehabilitation Science, University of Alabama at Birmingham, Birmingham, Alabama
| | - Jia Li
- Department of Physical Medicine and Rehabilitation Science, University of Alabama at Birmingham, Birmingham, Alabama
| | - Kevin M McCully
- Department of Kinesiology, University of Georgia, Athens, Georgia
| | - James H Rimmer
- UAB/Lakeshore Foundation Research Collaborative, Birmingham, Alabama
| | - Danille Powell
- Department of Physical Medicine and Rehabilitation Science, University of Alabama at Birmingham, Birmingham, Alabama
| | - C Scott Bickel
- Department of Physical Therapy, Samford University, Birmingham, Alabama
| | - Gordon Fisher
- Department of Human Studies, University of Alabama at Birmingham, Birmingham, Alabama
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Bresnahan JJ, Farkas GJ, Clasey JL, Yates JW, Gater DR. Arm crank ergometry improves cardiovascular disease risk factors and community mobility independent of body composition in high motor complete spinal cord injury. J Spinal Cord Med 2019; 42:272-280. [PMID: 29334345 PMCID: PMC6522950 DOI: 10.1080/10790268.2017.1412562] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
OBJECTIVE Evaluate the effect of aerobic exercise using arm crank ergometry (ACE) in high motor complete (ISNCSCI A/B) spinal cord injury (SCI) as primarily related to cardiovascular disease (CVD) risk factors and functional mobility and secondarily to body composition and metabolic profiles. DESIGN Longitudinal interventional study at an academic medical center. METHODS Ten previously untrained participants (M8/F2, Age 36.7 y ± 10.1, BMI 24.5 ± 6.0) with high motor complete SCI (C7-T5) underwent ACE exercise training 30 minutes/day × 3 days/week for 10 weeks at 70% VO2Peak. OUTCOME MEASURES Primary outcome measures were pre- and post-intervention changes in markers of cardiovascular fitness (graded exercise testing (GXT): VO2, VO2Peak, respiratory quotient [RQ], GXT time, peak power, and energy expenditure [EE]) and community mobility (time to traverse a 100ft-5° ramp, and 12-minute WC propulsion test). Secondary outcome measures were changes in body composition and metabolic profiles (fasting and area under the curve for glucose and insulin, homeostasis model assessment [HOMA] for %β-cell activity [%β], %insulin sensitivity [%S], and insulin resistance [IR], and Matsuda Index [ISIMatsuda]). RESULTS Resting VO2, relative VO2Peak, absolute VO2Peak, peak power, RQ, 12-minute WC propulsion, fasting insulin, fasting G:I ratio, HOMA-%S, and HOMA-IR all significantly improved following intervention (P < 0.05). There were no changes in body composition (P>0.05). CONCLUSIONS Ten weeks of ACE at 70% VO2Peak in high motor complete SCI improves aerobic capacity, community mobility, and metabolic profiles independent of changes in body composition.
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Affiliation(s)
- James J. Bresnahan
- Department of Medicine, Abington Hospital – Jefferson Health, Abington, Pennsylvania
- Department of Physical Medicine and Rehabilitation, Pennsylvania State University College of Medicine, Hershey, Pennsylvania
| | - Gary J. Farkas
- Department of Physical Medicine and Rehabilitation, Pennsylvania State University College of Medicine, Hershey, Pennsylvania
| | - Jody L. Clasey
- Department of Kinesiology and Health Promotion, University of Kentucky, Lexington, Kentucky
- Department of Physical Medicine and Rehabilitation, University of Kentucky, Lexington, Kentucky
| | - James W. Yates
- Department of Kinesiology and Health Promotion, University of Kentucky, Lexington, Kentucky
- Department of Physical Medicine and Rehabilitation, University of Kentucky, Lexington, Kentucky
| | - David R. Gater
- Department of Physical Medicine and Rehabilitation, Pennsylvania State University College of Medicine, Hershey, Pennsylvania
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Kim DI, Taylor JA, Tan CO, Park H, Kim JY, Park SY, Chung KM, Lee YH, Lee BS, Jeon JY. A pilot randomized controlled trial of 6-week combined exercise program on fasting insulin and fitness levels in individuals with spinal cord injury. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2019; 28:1082-1091. [DOI: 10.1007/s00586-019-05885-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Accepted: 01/13/2019] [Indexed: 10/27/2022]
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Gorgey AS, Witt O, O’Brien L, Cardozo C, Chen Q, Lesnefsky EJ, Graham ZA. Mitochondrial health and muscle plasticity after spinal cord injury. Eur J Appl Physiol 2018; 119:315-331. [DOI: 10.1007/s00421-018-4039-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Accepted: 11/22/2018] [Indexed: 01/15/2023]
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20
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Nightingale TE, Walhin JP, Thompson D, Bilzon JLJ. Impact of Exercise on Cardiometabolic Component Risks in Spinal Cord-injured Humans. Med Sci Sports Exerc 2018; 49:2469-2477. [PMID: 28753161 PMCID: PMC5704648 DOI: 10.1249/mss.0000000000001390] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Purpose Spinal cord injury (SCI) creates a complex pathology, characterized by low levels of habitual physical activity and an increased risk of cardiometabolic disease. This study aimed to assess the effect of a moderate-intensity upper-body exercise training intervention on biomarkers of cardiometabolic component risks, adipose tissue metabolism, and cardiorespiratory fitness in persons with SCI. Methods Twenty-one inactive men and women with chronic (>1 yr) SCI (all paraplegic injuries) 47 ± 8 yr of age (mean ± SD) were randomly allocated to either a 6-wk prescribed home-based exercise intervention (INT; n = 13) or control group (CON; n = 8). Participants assigned to the exercise group completed 4 × 45-min moderate-intensity (60%–65% peak oxygen uptake (V˙O2peak)) arm-crank exercise sessions per week. At baseline and follow-up, fasted and postload blood samples (collected during oral glucose tolerance tests) were obtained to measure metabolic regulation and biomarkers of cardiovascular disease. Abdominal subcutaneous adipose tissue biopsies were also obtained, and cardiorespiratory fitness was assessed. Results Compared with CON, INT significantly decreased (P = 0.04) serum fasting insulin (Δ, 3.1 ± 10.7 pmol·L−1 for CON and −12.7 ± 18.7 pmol·L−1 for INT) and homeostasis model assessment of insulin resistance (HOMA2-IR; Δ, 0.06 ± 0.20 for CON and −0.23 ± 0.36 for INT). The exercise group also increased V˙O2peak (Δ, 3.4 mL·kg−1·min−1; P ≤ 0.001). Adipose tissue metabolism, composite insulin sensitivity index (C-ISIMatsuda), and other cardiovascular disease risk biomarkers were not different between groups. Conclusions Moderate-intensity upper-body exercise improved aspects of metabolic regulation and cardiorespiratory fitness. Changes in fasting insulin and HOMA2-IR, but not C-ISIMatsuda, suggest improved hepatic but not peripheral insulin sensitivity after 6 wk of exercise training in persons with chronic paraplegia.
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Affiliation(s)
- Tom E Nightingale
- Department for Health, University of Bath, Bath, Somerset, UNITED KINGDOM
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21
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Gorgey AS, Khalil RE, Lester RM, Dudley GA, Gater DR. Paradigms of Lower Extremity Electrical Stimulation Training After Spinal Cord Injury. J Vis Exp 2018:57000. [PMID: 29443103 PMCID: PMC5912427 DOI: 10.3791/57000] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Skeletal muscle atrophy, increased adiposity and reduced physical activity are key changes observed after spinal cord injury (SCI) and are associated with numerous cardiometabolic health consequences. These changes are likely to increase the risk of developing chronic secondary conditions and impact the quality of life in persons with SCI. Surface neuromuscular electrical stimulation evoked resistance training (NMES-RT) was developed as a strategy to attenuate the process of skeletal muscle atrophy, decrease ectopic adiposity, improve insulin sensitivity and enhance mitochondrial capacity. However, NMES-RT is limited to only a single muscle group. Involving multiple muscle groups of the lower extremities may maximize the health benefits of training. Functional electrical stimulation-lower extremity cycling (FES-LEC) allows for the activation of 6 muscle groups, which is likely to evoke greater metabolic and cardiovascular adaptation. Appropriate knowledge of the stimulation parameters is key to maximizing the outcomes of electrical stimulation training in persons with SCI. Adopting strategies for long-term use of NMES-RT and FES-LEC during rehabilitation may maintain the integrity of the musculoskeletal system, a pre-requisite for clinical trials aiming to restore walking after injury. The current manuscript presents a combined protocol using NMES-RT prior to FES-LEC. We hypothesize that muscles conditioned for 12 weeks prior to cycling will be capable of generating greater power, cycle against higher resistance and result in greater adaptation in persons with SCI.
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Affiliation(s)
- Ashraf S Gorgey
- Spinal Cord Injury and Disorders Service, Hunter Holmes McGuire VAMC; Department of Physical Medicine and Rehabilitation, Virginia Commonwealth University;
| | - Refka E Khalil
- Spinal Cord Injury and Disorders Service, Hunter Holmes McGuire VAMC
| | - Robert M Lester
- Spinal Cord Injury and Disorders Service, Hunter Holmes McGuire VAMC
| | - Gary A Dudley
- Deceased, Department of Kinesiology, The University of Georgia
| | - David R Gater
- Department of Physical Medicine and Rehabilitation, Penn State Milton S. Hershey Medical Center
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Medeiros MDSD, Motta J, Mariano S, Menguer L, Silva LAD. Estudo de caso de um programa individualizado de natação em cadeirante portador de poliomielite: análise de parâmetros bioquímicos, qualidade de vida e capacidade física funcional. REVISTA BRASILEIRA DE CIÊNCIAS DO ESPORTE 2018. [DOI: 10.1016/j.rbce.2018.01.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Nightingale TE, Metcalfe RS, Vollaard NB, Bilzon JL. Exercise Guidelines to Promote Cardiometabolic Health in Spinal Cord Injured Humans: Time to Raise the Intensity? Arch Phys Med Rehabil 2017; 98:1693-1704. [DOI: 10.1016/j.apmr.2016.12.008] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 12/15/2016] [Indexed: 10/20/2022]
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Gorgey AS, Graham ZA, Bauman WA, Cardozo C, Gater DR. Abundance in proteins expressed after functional electrical stimulation cycling or arm cycling ergometry training in persons with chronic spinal cord injury. J Spinal Cord Med 2017; 40:439-448. [PMID: 27735783 PMCID: PMC5537961 DOI: 10.1080/10790268.2016.1229397] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
STUDY DESIGN Longitudinal design. OBJECTIVES The study determined the effects of two forms of exercise training on the abundance of two proteins, (glucose transporter-4 [GLUT-4], adenosine monophosphate kinase [AMPK]) involved in glucose utilization and the transcriptional coactivator that regulates the genes involved in energy metabolism and mitochondrial biogenesis (peroxisome proliferator-activated receptor (PPAR) coactivator 1 alpha [PGC-1α]), in muscles in men with chronic motor-complete spinal cord injury (SCI). SETTINGS Clinical trial at a Medical Center. METHODS Nine men with chronic motor-complete SCI participated in functional electrical stimulation lower extremity cycling (FES-LEC; n = 4) or arm cycling ergometer (arm-cycling ergometer [ACE]; n = 5) 5 days/week for 16 weeks. Whole body composition was measured by dual energy X-ray absorptiometry. An intravenous glucose tolerance test was performed to measure glucose effectiveness (Sg) and insulin sensitivity (Si). Muscle biopsies of the right vastus lateralis (VL) and triceps muscles were collected one week prior to and post the exercise training intervention. RESULTS Neither training intervention altered body composition or carbohydrate metabolism. GLUT-4 increased by 3.8 fold in the VL after FES training and increased 0.6 fold in the triceps after ACE training. PGC-1α increased by 2.3 fold in the VL after FES training and 3.8 fold in the triceps after ACE training. AMPK increased by 3.4 fold in the VL after FES training and in the triceps after ACE training. CONCLUSION FES-LEC and ACE training were associated with greater protein expressions in the trained muscles by effectively influencing the abundance of GLUT-4, AMPK and PGC-1α. Thus, FES-LEC training of paralyzed muscle can modulate protein expression similar to that of trained and innervated muscle.
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Affiliation(s)
- Ashraf S. Gorgey
- Spinal Cord Injury Service and Disorders; Hunter Holmes McGuire VA Medical Center, Richmond, VA, USA,Department of Physical Medicine and Rehabilitation; Virginia Commonwealth University, Richmond, VA, USA,Correspondence to: Ashraf S. Gorgey, Director of Spinal Cord Injury Research, Department of Veterans Affairs, Hunter Holmes McGuire Medical Center, Spinal Cord Injury & Disorders Service, 1201 Broad Rock Boulevard, Richmond, VA 23249.
| | - Zachary A. Graham
- National Center for the Medical Consequences of Spinal Cord Injury, James J. Peters VA Medical Center, Bronx, NY, USA,Icahn School of Medicine at Mt. Sinai, Medicine, New York City, NY, USA
| | - William A. Bauman
- National Center for the Medical Consequences of Spinal Cord Injury, James J. Peters VA Medical Center, Bronx, NY, USA,Icahn School of Medicine at Mt. Sinai, Medicine, New York City, NY, USA
| | - Christopher Cardozo
- National Center for the Medical Consequences of Spinal Cord Injury, James J. Peters VA Medical Center, Bronx, NY, USA,Icahn School of Medicine at Mt. Sinai, Medicine, New York City, NY, USA
| | - David R. Gater
- Department of Physical Medicine and Rehabilitation, Penn State Milton S. Hershey Medical Center, Hershey, PA, USA
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Erickson ML, Ryan TE, Backus D, McCully KK. Endurance neuromuscular electrical stimulation training improves skeletal muscle oxidative capacity in individuals with motor-complete spinal cord injury. Muscle Nerve 2017; 55:669-675. [PMID: 27576602 DOI: 10.1002/mus.25393] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 08/22/2016] [Accepted: 08/29/2016] [Indexed: 12/25/2022]
Abstract
INTRODUCTION Spinal cord injury (SCI) results in skeletal muscle atrophy, increases in intramuscular fat, and reductions in skeletal muscle oxidative capacity. Endurance training elicited with neuromuscular electrical stimulation (NMES) may reverse these changes and lead to improvement in muscle metabolic health. METHODS Fourteen participants with complete SCI performed 16 weeks of home-based endurance NMES training of knee extensor muscles. Skeletal muscle oxidative capacity, muscle composition, and blood metabolic and lipid profiles were assessed pre- and post-training. RESULTS There was an increase in number of contractions performed throughout the duration of training. The average improvement in skeletal muscle oxidative capacity was 119%, ranging from -14% to 387% (P = 0.019). There were no changes in muscle composition or blood metabolic and lipid profiles. CONCLUSION Endurance training improved skeletal muscle oxidative capacity, but endurance NMES of knee extensor muscles did not change blood metabolic and lipid profiles. Muscle Nerve 55: 669-675, 2017.
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Affiliation(s)
- Melissa L Erickson
- Department of Kinesiology, University of Georgia, 330 River Road, Athens, Georgia, 30602, USA
| | - Terence E Ryan
- Brody School of Medicine, East Carolina University, Greenville, North Carolina, USA
| | - Deborah Backus
- Crawford Research Institute, Shepherd Center Hospital, Atlanta, Georgia, USA
| | - Kevin K McCully
- Department of Kinesiology, University of Georgia, 330 River Road, Athens, Georgia, 30602, USA
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Nightingale TE, Walhin JP, Turner JE, Thompson D, Bilzon JLJ. The influence of a home-based exercise intervention on human health indices in individuals with chronic spinal cord injury (HOMEX-SCI): study protocol for a randomised controlled trial. Trials 2016; 17:284. [PMID: 27278276 PMCID: PMC4898470 DOI: 10.1186/s13063-016-1396-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 05/11/2016] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Spinal cord injury (SCI) creates a complex pathology that can lead to an increase in sedentary behaviours and deleterious changes in body composition. Consequently, individuals with SCI are at increased risk of developing cardiovascular disease and type-2 diabetes mellitus. While the role of physical activity on the reduction of chronic disease risk is well documented in non-disabled individuals the evidence is less conclusive for persons with SCI. The aim of this methodological paper is to outline the design of a study that will assess the role of a home-based exercise intervention on biomarkers of metabolic and cardiovascular health in persons with SCI: the HOMEX-SCI study. METHODS/DESIGN Eligible participants will be inactive (physical activity level ≤1.60) individuals, with a chronic (more than 1 year) spinal cord lesion between the second thoracic and the fifth lumbar vertebrae, and aged between 18 and 65 years. Following baseline laboratory testing and lifestyle monitoring, participants will be randomly allocated to a control (CON) group or a 6-week home-based exercise intervention (INT) group. The INT consists of 45 minutes of moderate-intensity (60-65 % peak oxygen uptake) arm-crank exercise four times per week. Participants assigned to the CON group will be asked to maintain their normal lifestyle. The main outcomes of this study (biomarkers of metabolic and cardiovascular health) are obtained from venous blood samples, collected in the fasted and postprandial state. Eight other measurement categories will be assessed: (1) body composition, (2) physical activity, (3) energy intake, (4) measures of health and wellbeing, (5) resting metabolic rate, heart rate and blood pressure, (6) aerobic capacity, (7) immune function, and (8) adipose tissue gene expression. DISCUSSION This study will explore the feasibility of home-based moderate-intensity exercise and ascertain its impact on metabolic and cardiovascular health in comparison to a lifestyle maintenance CON group. Findings from this study may help to inform new evidence-based physical activity guidelines and also help to elucidate the physiological mechanisms whereby exercise might exert beneficial effects in persons with chronic SCI. The results will also act as a scientific platform for further intervention studies in other diverse and at-risk populations. TRIAL REGISTRATION International Standard Randomised Controlled Trial Number: ISRCTN57096451 . Registered on 11 July 2014.
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Affiliation(s)
| | | | - James E Turner
- Department for Health, University of Bath, BA2 7AY, Bath, UK
| | - Dylan Thompson
- Department for Health, University of Bath, BA2 7AY, Bath, UK
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Bosques G, Martin R, McGee L, Sadowsky C. Does therapeutic electrical stimulation improve function in children with disabilities? A comprehensive literature review. J Pediatr Rehabil Med 2016; 9:83-99. [PMID: 27285801 DOI: 10.3233/prm-160375] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The use of therapeutic electrical stimulation for medical purposes is not new; it has been described in medical textbooks since the 18th century, but its use has been limited due to concerns for tolerance and lack of research showing efficacy. The purpose of this review is to discuss the potential clinical applicability, while clarifying the differences in electrical stimulation (ES) treatments and the theory behind potential benefits to remediate functional impairments in youth.The literature review was performed as follows: A total of 37 articles were reviewed and the evidence for use in pediatric diagnoses is reported.The synthesis of the literature suggests that improvements in various impairments may be possible with the integration of ES. Most studies were completed on children with cerebral palsy (CP). Electrical stimulation may improve muscle mass and strength, spasticity, passive range of motion (PROM), upper extremity function, walking speed, and positioning of the foot and ankle kinematics during walking. Sitting posture and static/dynamic sitting balance may be improved with ES to trunk musculature. Bone mineral density may be positively affected with the use of Functional Electrical Stimulation (FES) ergometry. ES may also be useful in the management of urinary tract dysfunction and chronic constipation. Among all reviewed studies, reports of direct adverse reactions to electrical stimulation were rare.In conclusion, NMES and FES appear to be safe and well tolerated in children with various disabilities. It is suggested that physiatrists and other healthcare providers better understand the indications and parameters in order to utilize these tools effectively in the pediatric population. MeSH terms: Electrical stimulation; child; review.
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Affiliation(s)
- Glendaliz Bosques
- University of Texas - Health Science Center at Houston (UTHealth), Houston, TX, USA.,Shriners Hospital for Children, Houston, TX, USA
| | - Rebecca Martin
- Kennedy Krieger Institute, Baltimore, MD, USA.,Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Leah McGee
- Shriners Hospital for Children, Houston, TX, USA
| | - Cristina Sadowsky
- Kennedy Krieger Institute, Baltimore, MD, USA.,Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Effects of a 6-Week Indoor Hand-Bike Exercise Program on Health and Fitness Levels in People With Spinal Cord Injury: A Randomized Controlled Trial Study. Arch Phys Med Rehabil 2015; 96:2033-40.e1. [DOI: 10.1016/j.apmr.2015.07.010] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Revised: 06/27/2015] [Accepted: 07/18/2015] [Indexed: 11/20/2022]
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Panisset MG, Galea MP, El-Ansary D. Does early exercise attenuate muscle atrophy or bone loss after spinal cord injury? Spinal Cord 2015; 54:84-92. [PMID: 26345485 DOI: 10.1038/sc.2015.150] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 07/27/2015] [Accepted: 07/29/2015] [Indexed: 11/09/2022]
Abstract
OBJECTIVES To systematically identify and assess the evidence on the efficacy of exercise initiated early after traumatic spinal cord injury (SCI). METHODS A comprehensive search (Any-2014) of eleven databases identified studies evaluating exercise interventions initiated within 12 weeks after SCI on muscle and bone loss in paralyzed limbs and comparing with standard care or immobilization. Two reviewers assessed methodological quality. One reviewer extracted data and critiqued results according to the Spinal Cord Injury Rehabilitation Evidence body of evidence framework. RESULTS A total of 2811 titles were screened. Eleven studies were included: five randomized controlled trials, four cohort studies and two within-subject control studies. All provided level II evidence with a moderate risk of bias. Two studies found significant positive effects of high-load FES-resisted stance on physiological measures of muscle. Three reported positive effects of 3 months of Functional Electrical Stimulation (FES) on muscle size. Two studies found positive effects of 6-month body-weight supported treadmill training or FES on trabecular bone using pQCT. CONCLUSION We found consistent evidence of positive effects of early exercise on muscle, possibly related to load intensity of the protocol. However, the heterogeneity of interventions and outcomes makes this determination speculative. Evidence for the effectiveness of early exercise on bone is scant and confined to measures of trabecular bone mineral density via pQCT. Transparent reporting of methods and variability of data, combined with standardization of valid and sensitive measures of muscle atrophy and bone loss, could facilitate future meta-analysis on this topic.
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Affiliation(s)
- M G Panisset
- Department of Medicine, Royal Melbourne Hospital, The University of Melbourne, Parkville, Victoria, Australia
| | - M P Galea
- Department of Medicine, Royal Melbourne Hospital, The University of Melbourne, Parkville, Victoria, Australia
| | - D El-Ansary
- Department of Physiotherapy, Melbourne School of Health Sciences, The University of Melbourne, Parkville, Victoria, Australia
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Phillips AA, Krassioukov AV. Contemporary Cardiovascular Concerns after Spinal Cord Injury: Mechanisms, Maladaptations, and Management. J Neurotrauma 2015; 32:1927-42. [PMID: 25962761 DOI: 10.1089/neu.2015.3903] [Citation(s) in RCA: 113] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Cardiovascular (CV) issues after spinal cord injury (SCI) are of paramount importance considering they are the leading cause of death in this population. Disruption of autonomic pathways leads to a highly unstable CV system, with impaired blood pressure (BP) and heart rate regulation. In addition to low resting BP, on a daily basis the majority of those with SCI suffer from transient episodes of aberrantly low and high BP (termed orthostatic hypotension and autonomic dysreflexia, respectively). In fact, autonomic issues, including resolution of autonomic dysreflexia, are frequently ranked by individuals with high-level SCI to be of greater priority than walking again. Owing to a combination of these autonomic disturbances and a myriad of lifestyle factors, the pernicious process of CV disease is accelerated post-SCI. Unfortunately, these secondary consequences of SCI are only beginning to receive appropriate clinical attention. Immediately after high-level SCI, major CV abnormalities present in the form of neurogenic shock. After subsiding, new issues related to BP instability arise, including orthostatic hypotension and autonomic dysreflexia. This review describes autonomic control over the CV system before injury and the mechanisms underlying CV abnormalities post-SCI, while also detailing the end-organ consequences, including those of the heart, as well as the systemic and cerebral vasculature. The tertiary impact of CV dysfunction will also be discussed, such as the potential impediment of rehabilitation, and impaired cognitive function. In the recent past, our understanding of autonomic dysfunctions post-SCI has been greatly enhanced; however, it is vital to further develop our understanding of the long-term consequences of these conditions, which will equip us to better manage CV disease morbidity and mortality in this population.
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Affiliation(s)
- Aaron A Phillips
- 1 Center for Heart, Lung, and Vascular Health, Faculty of Health and Social Development, University of British Columbia , Kelowna, British Columbia, Canada .,2 Experimental Medicine Program, Faculty of Medicine, University of British Columbia , Vancouver, British Columbia, Canada .,3 International Collaboration on Repair Discoveries (ICORD), University of British Columbia , Vancouver, British Columbia, Canada
| | - Andrei V Krassioukov
- 2 Experimental Medicine Program, Faculty of Medicine, University of British Columbia , Vancouver, British Columbia, Canada .,3 International Collaboration on Repair Discoveries (ICORD), University of British Columbia , Vancouver, British Columbia, Canada .,4 Department of Physical Medicine and Rehabilitation, University of British Columbia , Vancouver, British Columbia, Canada
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Joubert M, Metayer L, Prevost G, Morera J, Rod A, Cailleux A, Parienti JJ, Reznik Y. Neuromuscular electrostimulation and insulin sensitivity in patients with type 2 diabetes: the ELECTRODIAB pilot study. Acta Diabetol 2015; 52:285-91. [PMID: 25107502 DOI: 10.1007/s00592-014-0636-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Accepted: 07/23/2014] [Indexed: 01/31/2023]
Abstract
AIM Physical activity (PA) improves insulin sensitivity and is particularly important for type 2 diabetes (T2D) management; however, patient adherence is poor. Neuromuscular electrostimulation (NMES) is widely used for rehabilitation issues, but the metabolic impact of provoked involuntary muscular contractions has never been investigated. MATERIALS AND METHODS ELECTRODIAB is a prospective, bi-centric, and 4-week-long pilot study that enrolled 18 patients with T2D who did not require insulin treatment. Insulin sensitivity was evaluated by euglycemic hyperinsulinemic clamp before and after (1) a single NMES session and (2) a week of daily NMES training. Energy expenditure (EE) at baseline and during NMES was evaluated by indirect calorimetry. Dietary and background PA were monitored to avoid bias. RESULTS After a single session (T1) or a week (T2) of NMES training, insulin sensitivity (M value) increased by 9.3 ± 38.2 % (ns) and 24.9 ± 35.8 % (p = 0.009), respectively, compared with the baseline (T0). Insulin sensitivity increased up to 46.2 ± 33.8 % (p = 0.002) at T2 in the more insulin-resistant subjects (baseline M value ≤4 mg/Kg/min, n = 10). The NMES session-generated EE was 1.42 ± 9.27 kcal/h, which was not significantly increased from the baseline. CONCLUSIONS Insulin sensitivity was significantly improved in patients with T2D after 1 week of daily NMES training, with very low EE. NMES could be an alternative to conventional PA, but the putative mechanisms of action must still be investigated.
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Affiliation(s)
- Michael Joubert
- Diabetes Care Unit, University Hospital of Caen, Caen, France,
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Gorgey AS, Dolbow DR, Dolbow JD, Khalil RK, Gater DR. The effects of electrical stimulation on body composition and metabolic profile after spinal cord injury--Part II. J Spinal Cord Med 2015; 38:23-37. [PMID: 25001669 PMCID: PMC4293531 DOI: 10.1179/2045772314y.0000000244] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Diet and exercise are cornerstones in the management of obesity and associated metabolic complications, including insulin resistance, type 2 diabetes, and disturbances in the lipid profile. However, the role of exercise in managing body composition adaptations and metabolic disorders after spinal cord injury (SCI) is not well established. The current review summarizes evidence about the efficacy of using neuromuscular electrical stimulation or functional electrical stimulation in exercising the paralytic lower extremities to improve body composition and metabolic profile after SCI. There are a number of trials that investigated the effects on muscle cross-sectional area, fat-free mass, and glucose/lipid metabolism. The duration of the intervention in these trials varied from 6 weeks to 24 months. Training frequency ranged from 2 to 5 days/week. Most studies documented significant increases in muscle size but no noticeable changes in adipose tissue. While increases in skeletal muscle size after twice weekly training were greater than those trials that used 3 or 5 days/week, other factors such as differences in the training mode, i.e. resistance versus cycling exercise and pattern of muscle activation may be responsible for this observation. Loading to evoke muscle hypertrophy is a key component in neuromuscular training after SCI. The overall effects on lean mass were modest and did not exceed 10% and the effects of training on trunk or pelvic muscles remain unestablished. Most studies reported improvement in glucose metabolism with the enhancement of insulin sensitivity being the major factor following training. The effect on lipid profile is unclear and warrants further investigation.
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Affiliation(s)
- Ashraf S. Gorgey
- Correspondence to: Ashraf S. Gorgey, Department of Veterans Affairs, Hunter Holmes McGuire Medical Center, Spinal Cord Injury & Disorders Service, 1201 Broad Rock Boulevard, Richmond, VA 23249, USA.
| | - David R. Dolbow
- School of Human Performance and Recreation, University of Southern Mississippi, Hattiesburg, MS, USA
| | - James D. Dolbow
- Spinal Cord Injury and Disorders Center, Hunter Holmes McGuire VAMC, Richmond, VA, USA
| | - Refka K. Khalil
- Spinal Cord Injury and Disorders Center, Hunter Holmes McGuire VAMC, Richmond, VA, USA
| | - David R. Gater
- Department of Physical Medicine and Rehabilitation, Penn State University, Penn State College of Medicine, Hershey, PA, USA
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Reynolds MA, McCully K, Burdett B, Manella C, Hawkins L, Backus D. Pilot study: evaluation of the effect of functional electrical stimulation cycling on muscle metabolism in nonambulatory people with multiple sclerosis. Arch Phys Med Rehabil 2014; 96:627-32. [PMID: 25450130 DOI: 10.1016/j.apmr.2014.10.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Accepted: 10/13/2014] [Indexed: 10/24/2022]
Abstract
OBJECTIVE To investigate the changes in muscle oxygen consumption (mV˙O2) using near-infrared spectroscopy (NIRS) after 4 weeks of training with functional electrical stimulation (FES) cycling in nonambulatory people with multiple sclerosis (MS). DESIGN Four-week before-after trial to assess changes in mV˙O2 after an FES cycling intervention. SETTING Rehabilitation hospital. PARTICIPANTS People (N=8; 7 men, 1 women) from a volunteer/referred sample with moderate to severe MS (Expanded Disability Status Scale score>6.0). INTERVENTION Participants cycled 30 minutes per session, 3d/wk for 4 weeks or a total of 12 sessions. MAIN OUTCOME MEASURES mV˙O2 of the right vastus lateralis muscle was measured with NIRS before and within 1 week after the intervention. Six bouts of 15-second electrical stimulation increasing from 2 to 7Hz were used to activate the muscle. mV˙O2 was assessed by analyzing the slope of the NIRS oxygen signal during a 10-second arterial occlusion after each electrical stimulation bout. RESULTS Significant FES training by electrical stimulation frequency level interaction was observed (P=.031), with an average increase in mV˙O2 of 47% across frequencies with a main effect of training (P=.047). CONCLUSIONS FES cycling for 4 weeks improved mV˙O2, suggesting that FES cycling is a potential therapy for improving muscle health in people with MS who are nonambulatory.
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Affiliation(s)
| | - Kevin McCully
- Department of Kinesiology, University of Georgia, Athens, GA
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A six-week motor-driven functional electronic stimulation rowing program improves muscle strength and body composition in people with spinal cord injury: a pilot study. Spinal Cord 2014; 52:621-4. [DOI: 10.1038/sc.2014.76] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Revised: 04/03/2014] [Accepted: 04/22/2014] [Indexed: 11/08/2022]
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Peng J, Zeng J, Cai B, Yang H, Cohen MJ, Chen W, Sun MW, Lu CD, Jiang H. Establishment of quantitative severity evaluation model for spinal cord injury by metabolomic fingerprinting. PLoS One 2014; 9:e93736. [PMID: 24727691 PMCID: PMC3984092 DOI: 10.1371/journal.pone.0093736] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Accepted: 03/06/2014] [Indexed: 11/18/2022] Open
Abstract
Spinal cord injury (SCI) is a devastating event with a limited hope for recovery and represents an enormous public health issue. It is crucial to understand the disturbances in the metabolic network after SCI to identify injury mechanisms and opportunities for treatment intervention. Through plasma 1H-nuclear magnetic resonance (NMR) screening, we identified 15 metabolites that made up an "Eigen-metabolome" capable of distinguishing rats with severe SCI from healthy control rats. Forty enzymes regulated these 15 metabolites in the metabolic network. We also found that 16 metabolites regulated by 130 enzymes in the metabolic network impacted neurobehavioral recovery. Using the Eigen-metabolome, we established a linear discrimination model to cluster rats with severe and mild SCI and control rats into separate groups and identify the interactive relationships between metabolic biomarkers in the global metabolic network. We identified 10 clusters in the global metabolic network and defined them as distinct metabolic disturbance domains of SCI. Metabolic paths such as retinal, glycerophospholipid, arachidonic acid metabolism; NAD-NADPH conversion process, tyrosine metabolism, and cadaverine and putrescine metabolism were included. In summary, we presented a novel interdisciplinary method that integrates metabolomics and global metabolic network analysis to visualize metabolic network disturbances after SCI. Our study demonstrated the systems biological study paradigm that integration of 1H-NMR, metabolomics, and global metabolic network analysis is useful to visualize complex metabolic disturbances after severe SCI. Furthermore, our findings may provide a new quantitative injury severity evaluation model for clinical use.
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Affiliation(s)
- Jin Peng
- Program for Computational Biology, Systems Biology, and Translational Research, Metabolomics and Multidisciplinary Laboratory for Trauma Research, Institute for Disaster and Emergency Medicine, Sichuan Provincial People's Hospital, Sichuan Academy of Medical Sciences, Chengdu, Sichuan Province, China
- Department of Surgery, San Francisco General Hospital, University of California San Francisco, San Francisco, California, United States of America
| | - Jun Zeng
- Program for Computational Biology, Systems Biology, and Translational Research, Metabolomics and Multidisciplinary Laboratory for Trauma Research, Institute for Disaster and Emergency Medicine, Sichuan Provincial People's Hospital, Sichuan Academy of Medical Sciences, Chengdu, Sichuan Province, China
- Department of Trauma Surgery, Sichuan Provincial People's Hospital, Sichuan Academy of Medical Sciences, Chengdu, Sichuan Province, China
| | - Bin Cai
- Program for Computational Biology, Systems Biology, and Translational Research, Metabolomics and Multidisciplinary Laboratory for Trauma Research, Institute for Disaster and Emergency Medicine, Sichuan Provincial People's Hospital, Sichuan Academy of Medical Sciences, Chengdu, Sichuan Province, China
- Department of Trauma Surgery, Sichuan Provincial People's Hospital, Sichuan Academy of Medical Sciences, Chengdu, Sichuan Province, China
| | - Hao Yang
- Program for Computational Biology, Systems Biology, and Translational Research, Metabolomics and Multidisciplinary Laboratory for Trauma Research, Institute for Disaster and Emergency Medicine, Sichuan Provincial People's Hospital, Sichuan Academy of Medical Sciences, Chengdu, Sichuan Province, China
- Department of Computational Mathematics and Biostatistics, Metabolomics and Multidisciplinary Laboratory for Trauma Research, Institute for Disaster and Emergency Medicine, Sichuan Provincial People's Hospital, Sichuan Academy of Medical Sciences, Chengdu, Sichuan Province, China
| | - Mitchell Jay Cohen
- Program for Computational Biology, Systems Biology, and Translational Research, Metabolomics and Multidisciplinary Laboratory for Trauma Research, Institute for Disaster and Emergency Medicine, Sichuan Provincial People's Hospital, Sichuan Academy of Medical Sciences, Chengdu, Sichuan Province, China
- Department of Surgery, San Francisco General Hospital, University of California San Francisco, San Francisco, California, United States of America
| | - Wei Chen
- Program for Computational Biology, Systems Biology, and Translational Research, Metabolomics and Multidisciplinary Laboratory for Trauma Research, Institute for Disaster and Emergency Medicine, Sichuan Provincial People's Hospital, Sichuan Academy of Medical Sciences, Chengdu, Sichuan Province, China
- Department of Parenteral and Enteral Nutrition, Peking Union Medical College Hospital, Beijing, China
| | - Ming-Wei Sun
- Department of Trauma Surgery, Sichuan Provincial People's Hospital, Sichuan Academy of Medical Sciences, Chengdu, Sichuan Province, China
| | - Charles Damien Lu
- Program for Computational Biology, Systems Biology, and Translational Research, Metabolomics and Multidisciplinary Laboratory for Trauma Research, Institute for Disaster and Emergency Medicine, Sichuan Provincial People's Hospital, Sichuan Academy of Medical Sciences, Chengdu, Sichuan Province, China
| | - Hua Jiang
- Program for Computational Biology, Systems Biology, and Translational Research, Metabolomics and Multidisciplinary Laboratory for Trauma Research, Institute for Disaster and Emergency Medicine, Sichuan Provincial People's Hospital, Sichuan Academy of Medical Sciences, Chengdu, Sichuan Province, China
- Department of Trauma Surgery, Sichuan Provincial People's Hospital, Sichuan Academy of Medical Sciences, Chengdu, Sichuan Province, China
- Department of Computational Mathematics and Biostatistics, Metabolomics and Multidisciplinary Laboratory for Trauma Research, Institute for Disaster and Emergency Medicine, Sichuan Provincial People's Hospital, Sichuan Academy of Medical Sciences, Chengdu, Sichuan Province, China
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Martin R, Sadowsky C, Obst K, Meyer B, McDonald J. Functional electrical stimulation in spinal cord injury:: from theory to practice. Top Spinal Cord Inj Rehabil 2013; 18:28-33. [PMID: 23459150 DOI: 10.1310/sci1801-28] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
This article outlines steps to practical application of functional electrical stimulation (FES) within activity-based restorative therapy (ABRT). Drawing from current evidence, specific applications of FES intended to help restore function lost to spinal cord injury and associated neurologic disease are discussed. The medical and therapeutic indications, precautions, and contraindications are reviewed to help participants with appropriate patient selection, treatment planning, and assessment. Also included are the physiological implications of FES and alterable parameters, including dosing and timing, for a desired response. Finally, approaches to improve cortical representation and motor learning and to transition emerging movement into functional tasks are reviewed.
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Affiliation(s)
- Rebecca Martin
- The International Center for Spinal Cord Injury at Kennedy Krieger Institute , Baltimore , Maryland
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Ryan TE, Brizendine JT, Backus D, McCully KK. Electrically induced resistance training in individuals with motor complete spinal cord injury. Arch Phys Med Rehabil 2013; 94:2166-73. [PMID: 23816921 DOI: 10.1016/j.apmr.2013.06.016] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Revised: 06/12/2013] [Accepted: 06/12/2013] [Indexed: 10/26/2022]
Abstract
OBJECTIVE To examine the effects of 16 weeks of electrically induced resistance training on insulin resistance and glucose tolerance, and changes in muscle size, composition, and metabolism in paralyzed muscle. DESIGN Pre-post intervention. SETTING University-based trial. PARTICIPANTS Participants (N=14; 11 men and 3 women) with chronic (>2y post spinal cord injury), motor complete spinal cord injury. INTERVENTION Home-based electrically induced resistance exercise training twice weekly for 16 weeks. MAIN OUTCOME MEASURES Plasma glucose and insulin throughout a standard clinical oral glucose tolerance test, thigh muscle and fat mass via dual-energy x-ray absorptiometry, quadriceps and hamstrings muscle size and composition via magnetic resonance imaging, and muscle oxidative metabolism using phosphorus magnetic resonance spectroscopy. RESULTS Muscle mass increased in all participants (mean ± SD, 39%±27%; range, 5%-84%). The mean change ± SD in intramuscular fat was 3%±22%. Phosphocreatine mean recovery time constants ± SD were 102±24 and 77±18 seconds before and after electrical stimulation-induced resistance training, respectively (P<.05). There was no improvement in fasting blood glucose levels, homeostatic model assessment calculated insulin resistance, 2-hour insulin, or 2-hour glucose. CONCLUSIONS Sixteen weeks of electrical stimulation-induced resistance training increased muscle mass, but did not reduce intramuscular fat. Similarly, factors associated with insulin resistance or glucose tolerance did not improve with training. We did find a 25% improvement in mitochondrial function, as measured by phosphocreatine recovery rates. Larger improvements in mitochondrial function may translate into improved glucose tolerance and insulin resistance.
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Affiliation(s)
- Terence E Ryan
- Department of Kinesiology, University of Georgia, Athens, GA.
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de Groot PCE, Hjeltnes N, Heijboer AC, Stal W, Birkeland K. Effect of training intensity on physical capacity, lipid profile and insulin sensitivity in early rehabilitation of spinal cord injured individuals. Spinal Cord 2012; 41:673-9. [PMID: 14639446 DOI: 10.1038/sj.sc.3101534] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
STUDY DESIGN Pre-post training intervention. OBJECTIVES To evaluate the effect of training intensity on physical capacity, lipid profile and insulin sensitivity in early rehabilitation of spinal cord injured (SCI) patients, and to assess the correlation between peak aerobic capacity (VO(2Peak)) and insulin sensitivity. SETTING Spinal Cord Rehabilitation Unit, Sunnaas Hospital, Nesoddtangen, Norway. METHOD Six recently injured SCI individuals participated in the arm training intervention and were randomly admitted to a high-intensity (HI; 70-80% heart rate reserve (HRR)) and low-intensity (LI; 40-50% HRR) group. The 1 h interval training consisted of 3 min exercise bouts interspersed with 2 min of rest, three times a week for 8 weeks. In addition, a correlation coefficient was obtained between VO(2Peak) and insulin sensitivity in 11 SCI patients. RESULTS The 8-week training program resulted in a significant increase in VO(2Peak) and maximal power output (PO(Max)) for the group as a whole (P<0.05). VO(2Peak) increased significantly more and total cholesterol/high-density lipoprotein cholesterol (TC/HDL-C) ratio and triglycerids decreased significantly more in the HI group than in the LI group (P=0.05). Training-induced changes in insulin sensitivity were significantly different between the groups (P=0.05), which was due to a nonsignificant decline in insulin sensitivity in the HI group and a nonsignificant improvement in the LI group. A significant positive correlation was found between VO(2peak) and insulin sensitivity (r=0.68, P=0.02). CONCLUSION The interval arm training protocol as used in the present study enables recently injured SCI patients to do substantial work at a relatively high intensity. Results indicate that improvements in physical capacity and lipid profile were more pronounced in response to high-intensity training. The significant correlation between maximal oxygen consumption and insulin sensitivity indicates that, as in the able-bodied population, peak aerobic capacity is a predictive value with regard to insulin sensitivity in SCI. Future studies with larger groups assessing the role of exercise intensity on insulin sensitivity in SCI are suggested.
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Affiliation(s)
- P C E de Groot
- Department of Physiology, University Medical Centre Nijmegen, the Netherlands
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Lammers G, Poelkens F, van Duijnhoven NTL, Pardoel EM, Hoenderop JG, Thijssen DHJ, Hopman MTE. Expression of genes involved in fatty acid transport and insulin signaling is altered by physical inactivity and exercise training in human skeletal muscle. Am J Physiol Endocrinol Metab 2012; 303:E1245-51. [PMID: 23011062 DOI: 10.1152/ajpendo.00356.2012] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Physical deconditioning is associated with the development of chronic diseases, including type 2 diabetes and cardiovascular disease. Exercise training effectively counteracts these developments, but the underlying mechanisms are largely unknown. To gain more insight into these mechanisms, muscular gene expression levels were assessed after physical deconditioning and after exercise training of the lower limbs in humans by use of gene expression microarrays. To exclude systemic effects, we used human models for local physical inactivity (3 wk of unilateral limb suspension) and for local exercise training (6 wk of functional electrical stimulation exercise of the extremely deconditioned legs of individuals with a spinal cord injury). The most interesting subset of genes, those downregulated after deconditioning as well as upregulated after exercise training, contained 18 genes related to both the "insulin action" and "adipocytokine signaling" pathway. Of these genes, the three with strongest up/downregulation were the muscular fatty acid-binding protein-3 (FABP3), the fatty acid oxidizing enzyme hydroxyacyl-CoA dehydrogenase (HADH), and the mitochondrial fatty acid transporter solute carrier 25 family member A20 (SLC25A20). The expression levels of these genes were confirmed using RT-qPCR. The results of the present study indicate an important role for a decreased transport and metabolism of fatty acids, which provides a link between physical activity levels and insulin signaling.
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Affiliation(s)
- Gerwen Lammers
- Dept. of Physiology, Radboud Univ. Nijmegen Medical Centre, Nijmegen, The Netherlands
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Cragg JJ, Stone JA, Krassioukov AV. Management of Cardiovascular Disease Risk Factors in Individuals with Chronic Spinal Cord Injury: An Evidence-Based Review. J Neurotrauma 2012; 29:1999-2012. [DOI: 10.1089/neu.2012.2313] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Jacquelyn J. Cragg
- International Collaboration on Repair Discoveries (ICORD), Division of Physical Medicine and Rehabilitation University of British Columbia, Vancouver, British Columbia, Canada
- School of Population and Public Health, Division of Physical Medicine and Rehabilitation University of British Columbia, Vancouver, British Columbia, Canada
| | - James A. Stone
- University of Calgary, the Libin Cardiovascular Institute, and the Cardiac Wellness Institute of Calgary, Calgary, Alberta, Canada
| | - Andrei V. Krassioukov
- International Collaboration on Repair Discoveries (ICORD), Division of Physical Medicine and Rehabilitation University of British Columbia, Vancouver, British Columbia, Canada
- Department of Medicine, Division of Physical Medicine and Rehabilitation University of British Columbia, Vancouver, British Columbia, Canada
- G.F. Strong Rehabilitation Centre, Vancouver Health Authority, Vancouver, British Columbia, Canada
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Systematic review of the methodological quality and outcome measures utilized in exercise interventions for adults with spinal cord injury. Spinal Cord 2012; 50:718-27. [DOI: 10.1038/sc.2012.78] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Jung DW, Park DS, Lee BS, Kim M. Development of a motor driven rowing machine with automatic functional electrical stimulation controller for individuals with paraplegia; a preliminary study. Ann Rehabil Med 2012; 36:379-85. [PMID: 22837974 PMCID: PMC3400878 DOI: 10.5535/arm.2012.36.3.379] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2011] [Accepted: 05/09/2012] [Indexed: 11/18/2022] Open
Abstract
Objective To examine the cardiorespiratory responses of patients with spinal cord injury (SCI) paraplegia using a motor driven rowing machine. Method Ten SCI patients with paraplegia [A (n=6), B (n=1), and C (n=3) by the American Spinal Injury Association impairment scale] were selected. Two rowing techniques were used. The first used a fixed seat with rowing achieved using only upper extremity movement (fixed rowing). The second used an automatically moving seat, facilitating active upper extremity movement and passive lower extremity movement via the motorized seat (motor rowing). Each patient performed two randomly assigned rowing exercise stress tests 1-3 days apart. The work rate (WR), time, respiratory exchange ratio (R), oxygen consumption (VO2), heart rate (HR), metabolic equivalents (METs), and rating of perceived exertion (RPE) were recorded. Results WR, time, VO2, and METs were significantly higher after the motor rowing test than after fixed motor rowing test (p<0.05). HR after motor rowing was significantly lower than fixed rowing (p<0.05). Conclusion Cardiorespiratory responses as VO2, HR and METs can be elicited by the motor rowing for people with paraplegic SCI.
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Affiliation(s)
- Da-Woon Jung
- Department of Motor and Cognitive Function Rehabilitation, National Rehabilitation Research Institute, Seoul 142-884, Korea
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McGreevy K, Williams KA. Contemporary insights into painful diabetic neuropathy and treatment with spinal cord stimulation. Curr Pain Headache Rep 2012; 16:43-9. [PMID: 22071956 DOI: 10.1007/s11916-011-0230-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A substantial body of literature is available on the natural history of diabetes, but much less is understood of the natural history of painful diabetic peripheral neuropathy (PDPN), a pervasive and costly complication of diabetes mellitus. Multiple mechanisms have been proposed, including polyol pathway activation, advanced glycosylation end-product formation, and vasculopathic changes. Nevertheless, specific treatment modalities addressing these basic issues are still lacking. The mainstay of treatment includes pharmacological management with antidepressants, anticonvulsants, and opioids, but these drugs are often limited by unfavorable side-effect profiles. For over 30 years, spinal cord stimulation (SCS) has been used extensively for the management of various chronic neuropathic pain states. In the past decade, interest in the use of SCS for treatment of PDPN has increased. This article reviews pathophysiological mechanisms of PDPN, proposed mechanisms of SCS, and the role of SCS for the treatment of PDPN.
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Affiliation(s)
- Kai McGreevy
- Department of Anesthesiology and Critical Care Medicine, Division of Pain Medicine, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA
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McDonald JW, Sadowsky CL, Stampas A. The changing field of rehabilitation: optimizing spontaneous regeneration and functional recovery. HANDBOOK OF CLINICAL NEUROLOGY 2012; 109:317-336. [PMID: 23098722 DOI: 10.1016/b978-0-444-52137-8.00020-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
For neurorehabilitation of patients with spinal cord injury (SCI), the traditional emphasis on social adaptation is being expanded to include strategies that promote plasticity and regeneration in the central nervous system. Such strategies are needed to optimize recovery of neurological function. For example, the known dependence of most cellular processes on physical activity has led to the novel concept that activity is important in neural repair. This hypothesis has given rise to activity-based restoration therapies (ABRT), which aim to optimize neural activity in the damaged spinal cord, particularly below the injury level. Here, we review the basic science and clinical evidence supporting the lifelong use of ABRT for recovery from spinal cord injury. We define and describe ABRT, and discuss its components, its clinical applications, its relationship to medical management of spinal cord injury, and the potential influences of medications on recovery. We also discuss the health benefits of ABRT under physiological and pathological conditions. We stress that lifelong ABRT is required to optimize return of function and to allow patients to benefit from any "cures" that will be discovered.
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Affiliation(s)
- John W McDonald
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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Wegener ST, Adams LL, Rohe D. Promoting optimal functioning in spinal cord injury: the role of rehabilitation psychology. HANDBOOK OF CLINICAL NEUROLOGY 2012; 109:297-314. [PMID: 23098721 DOI: 10.1016/b978-0-444-52137-8.00019-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Comprehensive treatment and rehabilitation includes attention to the psychological needs of individuals with SCI and their families. This chapter is designed to familiarize neurologists and other practitioners with psychological issues and care in SCI. While psychologists play a key role, attention to psychosocial health is a responsibility shared by all members of the rehabilitation team, beginning with the patient and family, and including clinicians who are not formally identified as mental health providers. Treatment planning for a person with SCI begins with a thorough assessment of the cognitive, emotional, personality, and social factors that influence functioning and rehabilitation. Rehabilitation psychologists use a mixture of assessment tools, including clinical interviews, behavioral observations, and a wide range of standardized test instruments. Psychological interventions can involve direct intervention with the patient, in individual, family or group-based therapies. Other psychological strategies involve assistance through less direct methods - consultation and training to other rehabilitation team members or facilitating peer role-modeling and support groups. The chapter provides an overview of core clinical issues (emotional responses, substance use, pain, cognitive deficits, sexuality and vocational rehabilitation), delineates the process of psychological assessment and intervention, and provides guidance on incorporation of rehabilitation psychology into SCI rehabilitation.
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Affiliation(s)
- Stephen T Wegener
- Department of Physical Medicine and Rehabilitation, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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Gary DS, Malone M, Capestany P, Houdayer T, McDonald JW. Electrical stimulation promotes the survival of oligodendrocytes in mixed cortical cultures. J Neurosci Res 2011; 90:72-83. [PMID: 21932370 DOI: 10.1002/jnr.22717] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2011] [Revised: 05/09/2011] [Accepted: 05/19/2011] [Indexed: 11/07/2022]
Abstract
Oligodendrocyte (OLG) death plays a major role in white matter dysfunction and demyelination following injury to the CNS. Axonal contact, communication, and neuronal activity appear to promote OLG survival and function in cell culture and during development. The application of electrical stimulation to mixed neural cultures has been shown to promote OLG differentiation and the formation of myelin in vitro. Here we show that OLG viability can be significantly enhanced in mixed cortical cultures by applying biphasic pulses of electrical stimulation (ESTIM). Enhanced survival via ESTIM requires the presence of neurons and is suppressed by inhibition of voltage-gated sodium channels. Additionally, contact between the axon and OLG is necessary for ESTIM to promote OLG survival. This report suggests that patterned neuronal activity could repress delayed progression of white matter injury and promote CNS repair in neurological conditions that involve white matter damage.
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Affiliation(s)
- Devin S Gary
- The International Center for Spinal Cord Injury, Hugo W. Moser Research Institute at Kennedy Krieger, Baltimore, Maryland 21205, USA.
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Passariello CL, Gruodytė R, Hiio K, Mäestu J, Jürimäe J, Saar M, Cicchella A, Stefanelli C, Jürimäe T. ADIPOQ SNP45 associated with lean body mass in physically active normal weight adolescent girls. Am J Hum Biol 2011; 22:813-8. [PMID: 20878967 DOI: 10.1002/ajhb.21087] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
UNLABELLED Recently, two single nucleotide polymorphisms at position 45 and 276 on the adiponectin gene (ADIPOQ) have been recognized as determinants of total adiponectin levels, insulin resistance, and risk for diabetes in various obese populations. OBJECTIVES The aim of this study was to determine whether these two polymorphisms are indeed determinants in the development of metabolic disorders or whether they are secondary to other confounding factors. METHODS To do so, we have selected 170 physically active adolescent girls (mean age, 14.03 ± 1.5 years and mean body mass index, 19.98 ± 2.5 kg/m²) devoid of any metabolic diseases or confounding factors, to better attribute any findings to genotype effects. Concentration of adiponectin, insulin, and glucose were determined from blood samples with appropriate kits. Body fat parameters were evaluated with dual-energy X-ray absorptiometry, and genotype was analyzed with DNA extracted from whole blood samples followed by polymerase chain reaction and electrophoresis to separate alleles. RESULTS Neither single nucleotide polymorphism +45T/G nor +276G/T was related to homeostasis model assessment index or adiponectin levels; however, the presence of the G allele on site 45 favored a significant decrease in lean body mass compared with those who were T homozygous (TG:36.90/TT:41.07 kg, P < 0.05). CONCLUSIONS Results suggest that the reported increase in the risk of diabetes in subjects that were G allele carriers at site 45 in obese populations compared with normal-weight populations can be linked instead to a change in muscle mass or the muscle itself present in this genotype group.
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Affiliation(s)
- Catherine L Passariello
- Faculty of Exercise and Sport Sciences, Department of Biochemistry G. Moruzzi, University of Bologna, Bologna, Italy.
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Reduced Plasma Glucose and Leptin After 12 Weeks of Functional Electrical Stimulation–Rowing Exercise Training in Spinal Cord Injury Patients. Arch Phys Med Rehabil 2010; 91:1957-9. [DOI: 10.1016/j.apmr.2010.08.024] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2010] [Revised: 08/24/2010] [Accepted: 08/24/2010] [Indexed: 11/21/2022]
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Kahn NN, Feldman SP, Bauman WA. Lower-extremity functional electrical stimulation decreases platelet aggregation and blood coagulation in persons with chronic spinal cord injury: a pilot study. J Spinal Cord Med 2010; 33:150-8. [PMID: 20486534 PMCID: PMC2869270 DOI: 10.1080/10790268.2010.11689690] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Individuals with spinal cord injury (SCI) develop premature cardiovascular disease. Regular exercise reduces the incidence and symptoms of cardiovascular disease in able-bodied individuals; these salutary effects of exercise have not been documented in persons with SCI. OBJECTIVE To evaluate the effects of functional electrical stimulation leg cycle ergometry (FES-LCE) exercise training on platelet aggregation and blood coagulation in persons with SCI. PARTICIPANTS Subjects (n=14) with stable chronic (>1 year) paraplegia (T1-T10) or tetraplegia (C4-C8). METHODS Blood samples were collected before and after the first and eighth sessions (2 sessions per week for 4 weeks) of FES exercise. RESULTS Platelet aggregation was inhibited by 20% after the first session and by 40% (P < 0.001) after the eighth session. Thrombin activity was unchanged after the first session (10.7 +/- 0.85 s to 10.43 +/- 0.56 s) and decreased after the eighth session (12.5 +/- 1.98 s to 11.1 +/- 1.7 s; P < 0.0003). Antithrombin III activity increased after the first (103.8% +/- 8.9% to 110% +/- 6.9%; P < 0.0008) and eighth sessions (107.8% +/- 12.1% to 120.4% +/- 13.1%; P < 0.0001). Cyclic adenosine monophosphate increased after the first (9.9% + 2.5% to 15.8% +/- 3%; P < 0.001) and eighth sessions (17.8% +/- 4.2% to 36.5% +/- 7.6%; P < 0.0001). After the eighth session, factors V and X increased significantly (88% +/- 27% to 103% +/- 23%, P < 0.0001; 100% +/- 40% to 105% +/- 7%, P < 0.01, respectively); factors VII and VIII and fibrinogen did not change significantly. A significant reduction in platelet activation/aggregation was demonstrated in response to FES-LCE. The decrease in thrombin level was caused by the simultaneous increase in antithrombin activity. CONCLUSION These findings provide new insight into the potential protective effects of FES-LCE against the risk of cardiovascular disease.
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Affiliation(s)
- Nighat N Kahn
- Center of Excellence, James J. Peters VA Medical Center, 130 W. Kingsbridge Road, Bronx, NY 10468, USA.
| | | | - William A Bauman
- James J. Peters VA Medical Center, Bronx, New York
,Mount Sinai School of Medicine, New York, New York
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Raymond J, Harmer AR, Temesi J, van Kemenade C. Glucose tolerance and physical activity level in people with spinal cord injury. Spinal Cord 2010; 48:591-6. [DOI: 10.1038/sc.2009.180] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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