1
|
Nijdam TM, Jukema BN, de Fraiture EJ, Spijkerman R, Schuijt HJ, Spoelder M, Bongers CC, Hopman MT, Koenderman L, Hietbrink F, van der Velde D. Identification of neutrophil phenotype categories in geriatric hip fracture patients aids in personalized medicine. OTA Int 2023; 6:e291. [PMID: 38152436 PMCID: PMC10750458 DOI: 10.1097/oi9.0000000000000291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 08/25/2023] [Accepted: 10/08/2023] [Indexed: 12/29/2023]
Abstract
Objectives The number of geriatric hip fracture patients is high and expected to rise in the coming years, and many are frail and at risk for adverse outcomes. Early identification of high-risk patients is crucial to balance treatment and optimize outcome, but remains challenging. Previous research in patients with multitrauma suggested that neutrophil phenotype analysis could aid in early identification of high-risk patients. This pilot study investigated the feasibility and clinical value of neutrophil phenotype analysis in geriatric patients with a hip fracture. Methods A prospective study was conducted in a regional teaching hospital in the Netherlands. At the emergency department, blood samples were collected from geriatric patients with a hip fracture and analyzed using automated flow cytometry. Flow cytometry data were processed using an automated clustering algorithm. Neutrophil activation data were compared with a healthy control cohort. Neutrophil phenotype categories were assessed based on two-dimensional visual assessment of CD16/CD62L expression. Results Blood samples from 45 geriatric patients with a hip fracture were included. Neutrophils showed an increased activation profile and decreased responsiveness to formyl peptides when compared to healthy controls. The neutrophil phenotype of all patients was categorized. The incidence of severe adverse outcome was significantly different between the different categories (P = 0.0331). Moreover, patients with neutrophil phenotype category 0 developed no severe adverse outcomes. Conclusions Using point-of-care fully automated flow cytometry to analyze the neutrophil compartment in geriatric hip fracture patients is feasible and holds clinical value in determining patients at risk for adverse outcome. This study is a first step toward immuno-based precision medicine for identifying geriatric hip fracture patients that are deemed fit for surgery.
Collapse
Affiliation(s)
- Thomas M.P. Nijdam
- St. Antonius Ziekenhuis Utrecht, Department of Trauma Surgery, Utrecht, the Netherlands
| | - Bernard N. Jukema
- Department of Respiratory Medicine, University Medical Center Utrecht, Utrecht, the Netherlands
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Emma J. de Fraiture
- St. Antonius Ziekenhuis Utrecht, Department of Trauma Surgery, Utrecht, the Netherlands
- University Medical Center Utrecht, Department of Trauma Surgery, Utrecht, the Netherlands
| | - Roy Spijkerman
- St. Antonius Ziekenhuis Utrecht, Department of Trauma Surgery, Utrecht, the Netherlands
| | - Henk Jan Schuijt
- St. Antonius Ziekenhuis Utrecht, Department of Trauma Surgery, Utrecht, the Netherlands
| | - Marcia Spoelder
- Department of Physiology, Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Coen C.W.G. Bongers
- Department of Physiology, Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Maria T.E. Hopman
- Department of Physiology, Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Leo Koenderman
- Department of Respiratory Medicine, University Medical Center Utrecht, Utrecht, the Netherlands
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Falco Hietbrink
- University Medical Center Utrecht, Department of Trauma Surgery, Utrecht, the Netherlands
| | - Detlef van der Velde
- St. Antonius Ziekenhuis Utrecht, Department of Trauma Surgery, Utrecht, the Netherlands
| |
Collapse
|
2
|
Allard NA, Orlando P, Janssen L, Larsen S, Tiano L, Hopman MT, Timmers S. The Effect of Exercise Training on Muscle Coenzyme Q10 in Symptomatic and Asymptomatic Statin Users. JACC Basic Transl Sci 2023; 8:1592-1594. [PMID: 38205350 PMCID: PMC10774572 DOI: 10.1016/j.jacbts.2023.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Affiliation(s)
- Neeltje A.E. Allard
- Radboud Institute for Health Sciences, Department of Physiology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Patrick Orlando
- Institute of Biochemistry, Polytechnic University of Marche, Ancona, Italy
| | - Lando Janssen
- Radboud Institute for Health Sciences, Department of Physiology, Radboud University Medical Center, Nijmegen, the Netherlands
- Radboud Institute for Health Sciences, Department of Hematology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Steen Larsen
- Xlab, Department of Biomedical Sciences, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Luca Tiano
- Institute of Biochemistry, Polytechnic University of Marche, Ancona, Italy
| | - Maria T.E. Hopman
- Radboud Institute for Health Sciences, Department of Physiology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Silvie Timmers
- Department of Human and Animal Physiology, Wageningen University, Wageningen, the Netherlands
| |
Collapse
|
3
|
Kos M, Brouwer CG, van Laarhoven HW, Hopman MT, van Oijen MG, Buffart LM. The association between wearable device metrics and clinical outcomes in oncology: a systematic review with evidence synthesis and meta-analysis. Crit Rev Oncol Hematol 2023; 185:103979. [PMID: 37001837 DOI: 10.1016/j.critrevonc.2023.103979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 03/24/2023] [Accepted: 03/26/2023] [Indexed: 03/31/2023] Open
Abstract
BACKGROUND The emerging study of wearable devices (WDs) in patients with cancer provides opportunities to harness real-time patient data for predicting clinical outcomes. We conducted a systematic review with best evidence synthesis to examine the association between WD metrics and clinical outcomes in patients with cancer. METHODS MEDLINE and Embase were searched from inception until June 2022. Risk of bias assessment and best evidence synthesis were performed and, If possible, meta-analysis was conducted. RESULTS A total of 34 studies was included. We found moderate-to-strong evidence for associations between circadian rest-activity metrics and OS. Disrupted I<O was associated with increased hazard for death (HR 2.08; 95 %CI: 1.50-2.88). For most associations there was insufficient evidence due to lack of studies (n = 32) or inconsistent results (n = 14). CONCLUSION Meta-analysis was greatly hampered due to heterogeneity and different methodology used between studies. Studies primarily designed to investigate the association between WD metrics and clinical outcomes are warranted.
Collapse
|
4
|
Allard NAE, Janssen L, Lagerwaard B, Nuijten MA, Bongers CC, Rodenburg RJ, Eijsvogels TM, Schirris TJ, Timmers S, Hopman MT. Moderate Intensity Exercise Does Not Augment Muscle Damage Markers In Symptomatic And Asymptomatic Statin Users. Med Sci Sports Exerc 2022. [DOI: 10.1249/01.mss.0000878988.33095.4f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
5
|
Kleinnibbelink G, van Dijk AP, Fornasiero A, Speretta GF, Johnson C, Hopman MT, Sculthorpe N, George KP, Somauroo JD, Thijssen DH, Oxborough DL. Exercise-Induced Cardiac Fatigue after a 45-Minute Bout of High-Intensity Running Exercise Is Not Altered under Hypoxia. J Am Soc Echocardiogr 2021; 34:511-521. [DOI: 10.1016/j.echo.2020.12.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 12/01/2020] [Accepted: 12/01/2020] [Indexed: 10/22/2022]
|
6
|
van der Avoort CM, Jonvik KL, Nyakayiru J, van Loon LJ, Hopman MT, Verdijk LB. A Nitrate-Rich Vegetable Intervention Elevates Plasma Nitrate and Nitrite Concentrations and Reduces Blood Pressure in Healthy Young Adults. J Acad Nutr Diet 2020; 120:1305-1317. [DOI: 10.1016/j.jand.2020.02.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 02/22/2020] [Indexed: 01/26/2023]
|
7
|
Aengevaeren VL, Bakermans AJ, Froeling M, Hopman MT, Hooijmans MT, Monte JR, Strijkers GJ, Nederveen AJ, Eijsvogels TM. Can Marathon Running Induce Myocardial Microdamage? Med Sci Sports Exerc 2019. [DOI: 10.1249/01.mss.0000562321.94123.0a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
8
|
Terink R, Balvers MG, Bongers CCWG, Eijsvogels TMH, Witkamp RF, Mensink M, Hopman MT, Klein Gunnewiek JMT. Ionized and Total Magnesium Levels Change during Repeated Exercise in Older Adults. J Nutr Health Aging 2019; 23:595-601. [PMID: 31233083 DOI: 10.1007/s12603-019-1205-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Magnesium is essential for health and performance. Sub-optimal levels have been reported for older persons. In addition, physical exercise is known to temporally decrease magnesium blood concentrations. OBJECTIVE To investigate these observations in conjunction we assessed total (tMg) and ionized magnesium (iMg) concentrations in plasma and whole blood, respectively, during 4 consecutive days of exercise in very old vital adults. DESIGN 68 participants (age 83.7±1.9 years) were monitored on 4 consecutive days at which they walked 30-40km (average ~8 hours) per day at a self-determined pace. Blood samples were collected one or two days prior to the start of exercise (baseline) and every walking day immediately post-exercise. Samples were analysed for tMg and iMg levels. RESULTS Baseline tMg and iMg levels were 0.85±0.07 and 0.47±0.07 mmol/L, respectively. iMg decreased after the first walking day (-0.10±0.09 mmol/L, p<.001), increased after the second (+0.11±0.07 mmol/L, p<.001), was unchanged after the third and decreased on the final walking day, all compared to the previous day. tMg was only higher after the third walking day compared to the second walking day (p=.012). In 88% of the participants, iMg levels reached values considered to be sub-optimal at day 1, in 16% of the participants values were sub-optimal for tMg at day 2. CONCLUSION Prolonged moderate intensity exercise caused acute effects on iMg levels in a degree comparable to that after a bout of intensive exercise. These effects were not associated with drop-out or health problems. After the second consecutive day of exercise, levels were returned to baseline values, suggesting rapid adaptation/resilience in this population.
Collapse
Affiliation(s)
- R Terink
- Rieneke Terink, Stippeneng 4, building 124, 6708 WE, Wageningen, the Netherlands, telephone: 0031317-484067, e-mail:
| | | | | | | | | | | | | | | |
Collapse
|
9
|
Baart A, Balvers MG, Hopman MT, Eijsvogels TM, Klein Gunnewiek JM, van Kampen CA. Reticulocyte hemoglobin content in a large sample of the general Dutch population and its relation to conventional iron status parameters. Clin Chim Acta 2018; 483:20-24. [DOI: 10.1016/j.cca.2018.04.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 04/11/2018] [Indexed: 10/17/2022]
|
10
|
Wang Y, Maessen MF, Verbeek AL, Hopman MT, Eijsvogels TM. The Impact of Cardiovascular Disease Diagnosis on Physical Activity Behavior. Med Sci Sports Exerc 2018. [DOI: 10.1249/01.mss.0000535331.58201.fa] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
11
|
Aengevaeren VL, Caselli S, Hopman MT, Eijsvogels TM, Pelliccia A. Right Ventricular Remodeling In Olympic Athletes During 8 Years Of High-intensity Training. Med Sci Sports Exerc 2018. [DOI: 10.1249/01.mss.0000537188.97614.ae] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
12
|
Bongers CC, Alsady M, Hartman YA, Eijsvogels TM, Deen PM, Hopman MT. Impact of Moderate Intensity Endurance Exercise on Kidney Injury. Med Sci Sports Exerc 2017. [DOI: 10.1249/01.mss.0000518746.32131.0d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
13
|
Hartman YA, Janssen HJ, Tack CJ, Hopman MT, Thijssen DH. Insulin Therapy is Associated With Increased Sedentary Behaviour and Weight Gain in T2DM Patients. Med Sci Sports Exerc 2017. [DOI: 10.1249/01.mss.0000517769.59362.39] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
14
|
Aengevaeren VL, Hopman MT, Thijssen DH, van Kimmenade RR, de Boer MJ, Eijsvogels TM. Endurance exercise-induced changes in BNP concentrations in cardiovascular patients versus healthy controls. Int J Cardiol 2017; 227:430-435. [DOI: 10.1016/j.ijcard.2016.11.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 11/01/2016] [Accepted: 11/04/2016] [Indexed: 12/28/2022]
|
15
|
Bakker EA, Snoek JA, Meindersma EP, Bellersen L, Hopman MT, Thijssen DH, Verbeek AL, Eijsvogels TM. The Prognostic Value and Predictors of Responding to Exercise Training in Heart Failure Patients. Med Sci Sports Exerc 2016. [DOI: 10.1249/01.mss.0000486811.24956.4c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
16
|
Aengevaeren VL, Hopman MT, de Boer MJ, Thijssen DH, Eijsvogels TM. BNP Concentrations After Prolonged Moderate-intensity Exercise In Individuals With Cardiovascular Disease And Risk Factors. Med Sci Sports Exerc 2016. [DOI: 10.1249/01.mss.0000485616.80637.92] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
17
|
Scholten RR, Hopman MT, Lotgering FK, Spaanderman ME. Aerobic Exercise Training in Formerly Preeclamptic Women. Hypertension 2015; 66:1058-65. [DOI: 10.1161/hypertensionaha.115.05786] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2015] [Accepted: 08/16/2015] [Indexed: 11/16/2022]
Affiliation(s)
- Ralph R. Scholten
- From the Department of Obstetrics and Gynecology (R.R.S., F.K.L.) and Department of Physiology (R.R.S., M.T.E.H.), Radboudumc, Nijmegen, The Netherlands; and Department of Obstetrics and Gynecology, Research School GROW Maastricht University Medical Centre, Maastricht, The Netherlands (M.E.A.S.)
| | - Maria T.E. Hopman
- From the Department of Obstetrics and Gynecology (R.R.S., F.K.L.) and Department of Physiology (R.R.S., M.T.E.H.), Radboudumc, Nijmegen, The Netherlands; and Department of Obstetrics and Gynecology, Research School GROW Maastricht University Medical Centre, Maastricht, The Netherlands (M.E.A.S.)
| | - Fred K. Lotgering
- From the Department of Obstetrics and Gynecology (R.R.S., F.K.L.) and Department of Physiology (R.R.S., M.T.E.H.), Radboudumc, Nijmegen, The Netherlands; and Department of Obstetrics and Gynecology, Research School GROW Maastricht University Medical Centre, Maastricht, The Netherlands (M.E.A.S.)
| | - Marc E.A. Spaanderman
- From the Department of Obstetrics and Gynecology (R.R.S., F.K.L.) and Department of Physiology (R.R.S., M.T.E.H.), Radboudumc, Nijmegen, The Netherlands; and Department of Obstetrics and Gynecology, Research School GROW Maastricht University Medical Centre, Maastricht, The Netherlands (M.E.A.S.)
| |
Collapse
|
18
|
Veltmeijer MT, Eijsvogels TM, Thijssen DH, Hopman MT. Incidence and predictors of exertional hyperthermia after a 15-km road race in cool environmental conditions. J Sci Med Sport 2015; 18:333-7. [DOI: 10.1016/j.jsams.2014.04.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Revised: 04/10/2014] [Accepted: 04/17/2014] [Indexed: 12/26/2022]
|
19
|
Thijssen DH, Verheggen R, Maessen M, Green DJ, Hermus A, Hopman MT. Meta-analysis Of The Effect Of Exercise Training Versus Diet On Visceral Adipose Tissue And Weight Loss. Med Sci Sports Exerc 2015. [DOI: 10.1249/01.mss.0000477715.61925.4a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
20
|
Hopman MT, Maessen MF, Hansen RH, Thijssen DH, van Dijk A, Eijsvogels TM. The Impact Of Lifelong Physical Activity And Myocardial Infarction On Left Ventricular Function. Med Sci Sports Exerc 2015. [DOI: 10.1249/01.mss.0000479039.38732.52] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
21
|
Schreuder TH, Duncker DJ, Hopman MT, Thijssen DH. Randomised Controlled Trial Using Endothelin-blockade To Enhance The Impact Of Exercise Training In Diabetes. Med Sci Sports Exerc 2014. [DOI: 10.1249/01.mss.0000495447.71018.aa] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
22
|
Eijsvogels TM, Hoogerwerf MD, Oudegeest-Sander MH, Hopman MT, Thijssen DH. The impact of exercise intensity on cardiac troponin I release. Int J Cardiol 2014; 171:e3-4. [DOI: 10.1016/j.ijcard.2013.11.050] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Revised: 10/21/2013] [Accepted: 11/18/2013] [Indexed: 10/26/2022]
|
23
|
Hopman MT, Lammers G, Poelkens F, Tack CJ. The upregulation of skeletal muscle inflammatory genes links inflammation with impaired insulin resistance in women with the metabolic syndrome. FASEB J 2013. [DOI: 10.1096/fasebj.27.1_supplement.1109.4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Maria T.E. Hopman
- PhysiologyRadboud University Nijmegen Medical CentreNijmegenNetherlands
| | - Gerwen Lammers
- PhysiologyRadboud University Nijmegen Medical CentreNijmegenNetherlands
| | - Fleur Poelkens
- PhysiologyRadboud University Nijmegen Medical CentreNijmegenNetherlands
| | - Cees J. Tack
- General Internal MedicineRadboud University Nijmegen Medical CentreNijmegenNetherlands
| |
Collapse
|
24
|
Oudegeest-Sander MH, Eijsvogels TH, Verheggen RJ, Poelkens F, Hopman MT, Jones H, Thijssen DH. Impact of Physical Fitness and Daily Energy Expenditure on Sleep Efficiency in Young and Older Humans. Gerontology 2013; 59:8-16. [DOI: 10.1159/000342213] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2012] [Accepted: 07/30/2012] [Indexed: 11/19/2022] Open
|
25
|
Lammers G, Duijnhoven NTL, Hoenderop JG, Horstman AM, Haan A, Janssen TW, Graaf M, Pardoel EM, Verwiel ET, Thijssen DH, Hopman MT. The identification of gene clusters that correlate with vascular adaptations after physical deconditioning and exercise training in humans. FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.1134.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Gerwen Lammers
- PhysiologyRadboud University Nijmegen Medical CentreNijmegenNetherlands
| | | | | | - Astrid M.H. Horstman
- Research Institute MOVEFaculty of Human Movement SciencesVU University AmsterdamAmsterdamNetherlands
| | - Arnold Haan
- Research Institute MOVEFaculty of Human Movement SciencesVU University AmsterdamAmsterdamNetherlands
| | - Thomas W.J. Janssen
- Research Institute MOVEFaculty of Human Movement SciencesVU University AmsterdamAmsterdamNetherlands
- Amsterdam Rehabilitation Research Center ReadeAmsterdamNetherlands
| | - Mark Graaf
- PhysiologyRadboud University Nijmegen Medical CentreNijmegenNetherlands
| | | | | | - Dick H.J. Thijssen
- PhysiologyRadboud University Nijmegen Medical CentreNijmegenNetherlands
- Research Institute for Sports and Exercise ScienceLiverpool John Moores UniversityLiverpoolUnited Kingdom
| | - Maria T.E. Hopman
- PhysiologyRadboud University Nijmegen Medical CentreNijmegenNetherlands
| |
Collapse
|
26
|
Speelman AD, Groothuis JT, van Nimwegen M, van der Scheer ES, Borm GF, Bloem BR, Hopman MT, Munneke M. Cardiovascular Responses During a Submaximal Exercise Test in Patients with Parkinson's Disease. Journal of Parkinson's Disease 2012; 2:241-7. [DOI: 10.3233/jpd-2012-012111] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Arlène D. Speelman
- Department of Neurology, Nijmegen Centre of Evidence Based Practice, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - Jan T. Groothuis
- Department of Physiology, Nijmegen Centre of Evidence Based Practice, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
- Department of Rehabilitation, Sint Maartenskliniek, Nijmegen, The Netherlands
| | - Marlies van Nimwegen
- Department of Neurology, Nijmegen Centre of Evidence Based Practice, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - Ellis S. van der Scheer
- Department of Neurology, Nijmegen Centre of Evidence Based Practice, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - George F. Borm
- Department of Epidemiology, Biostatistics and HTA, Nijmegen Centre of Evidence Based Practice, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - Bastiaan R. Bloem
- Department of Neurology, Donders Institute for Brain, Cognition and Behavior, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - Maria T.E. Hopman
- Department of Physiology, Nijmegen Centre of Evidence Based Practice, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - Marten Munneke
- Department of Neurology, Nijmegen Centre of Evidence Based Practice, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
- Scientific Institute for Quality of Healthcare, Nijmegen Centre for Evidence Based Practice, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| |
Collapse
|
27
|
de Groot PC, Thijssen D, Binkhorst M, Green DJ, Schokking M, Hopman MT. Vascular function in children with repaired tetralogy of Fallot. Am J Cardiol 2010; 106:851-5. [PMID: 20816127 DOI: 10.1016/j.amjcard.2010.05.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2010] [Revised: 05/02/2010] [Accepted: 05/02/2010] [Indexed: 10/19/2022]
Abstract
We compared the endothelial function and vascular wall characteristics of 11 children with tetralogy of Fallot (TOF) (age 13 +/- 3 years) with the characteristics of 17 age-matched peers (12 +/- 2 years). Echocardiographic Doppler measurements were performed under standardized conditions to assess (1) the carotid and femoral artery diameter and intima-media thickness, (2) brachial artery endothelial function using flow-mediated dilation, and (3) central and peripheral compliance using pulsewave velocity. In addition, the physical activity level was assessed using a validated questionnaire. We found that the physical activity level of the children with TOF was lower than that of the controls, but the difference did not reach statistical significance (4.5 vs 5.9 h/wk, p = 0.087). A significantly larger femoral artery intima-media thickness was observed in those with TOF, and the carotid and brachial artery diameter and intima-media thickness were comparable between groups. The children with TOF demonstrated a significantly lower brachial artery flow-mediated dilation than that of the controls. The central and peripheral compliance did not differ between the 2 groups. In conclusion, children with TOF demonstrated an impaired brachial artery endothelial function and increased intima-media thickness of the femoral artery compared to their healthy peers. In conclusion, our findings have, therefore, indicated that children with TOF, already at a young age, have changes in vascular function and structure.
Collapse
|
28
|
Veltmeijer MT, Eijsvogels TM, Thijssen DH, Hopman MT. Obesity And The Risk Of Water And Electrolyte Imbalances During Prolonged Exercise. Med Sci Sports Exerc 2010. [DOI: 10.1249/01.mss.0000385988.65738.6f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
29
|
Eijsvogels TM, van Dartel SA, Thijssen DH, Hopman MT. Predictors Of High Body Core Temperatures During A Competitive Running Event. Med Sci Sports Exerc 2010. [DOI: 10.1249/01.mss.0000384375.66778.31] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
30
|
Hopman MT, Thijssen DH, Horstman AM, Haan A, Janssen TW, Duijnhoven NT. The effect of physical deconditioning and exercise on VEGF expression and vascular function. FASEB J 2010. [DOI: 10.1096/fasebj.24.1_supplement.1036.4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Maria T.E. Hopman
- PhysiologyRadboud University Nijmegen Medical CentreNijmegenNetherlands
| | - Dick H.J. Thijssen
- PhysiologyRadboud University Nijmegen Medical CentreNijmegenNetherlands
- Research Institute for Sports and Exercise ScienceLiverpool John Moores UniversityLiverpoolUnited Kingdom
| | | | - Arnold Haan
- Faculty of Human Movement SciencesVU University AmsterdamAmsterdamNetherlands
| | - Thomas W.J. Janssen
- Faculty of Human Movement SciencesVU University AmsterdamAmsterdamNetherlands
| | | |
Collapse
|
31
|
Groothuis JT, Rongen GA, Deinum J, Pickkers P, Danser AHJ, Geurts AC, Smits P, Hopman MT. Sympathetic Nonadrenergic Transmission Contributes to Autonomic Dysreflexia in Spinal Cord–Injured Individuals. Hypertension 2010; 55:636-43. [DOI: 10.1161/hypertensionaha.109.147330] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Autonomic dysreflexia is a hypertensive episode in spinal cord–injured individuals induced by exaggerated sympathetic activity and thought to be α-adrenergic mediated. α-Adrenoceptor antagonists have been a rational first choice; nevertheless, calcium channel blockers are primarily used in autonomic dysreflexia management. However, α-adrenoceptor blockade may leave a residual vasoconstrictor response to sympathetic nonadrenergic transmission unaffected. The aim was to assess the α-adrenergic contribution and, in addition, the role of supraspinal control to leg vasoconstriction during exaggerated sympathetic activity provoked by autonomic dysreflexia in spinal cord–injured individuals and by a cold pressure test in control individuals. Upper leg blood flow was measured using venous occlusion plethysmography during supine rest and during exaggerated sympathetic activity in 6 spinal cord–injured individuals and 7 able-bodied control individuals, without and with phentolamine (α-adrenoceptor antagonist) and nicardipine (calcium channel blocker) infusion into the right femoral artery. Leg vascular resistance was calculated. In spinal cord–injured individuals, phentolamine significantly reduced the leg vascular resistance increase during autonomic dysreflexia (8±5 versus 24±13 arbitrary units;
P
=0.04) in contrast to nicardipine (15±10 versus 24±13 arbitrary units;
P
=0.12). In controls, phentolamine completely abolished the leg vascular resistance increase during a cold pressure test (1±2 versus 18±14 arbitrary units;
P
=0.02). The norepinephrine increase during phentolamine infusion was larger (
P
=0.04) in control than in spinal cord–injured individuals. These results indicate that the leg vascular resistance increase during autonomic dysreflexia in spinal cord–injured individuals is not entirely α-adrenergic mediated and is partly explained by nonadrenergic transmission, which may, in healthy subjects, be suppressed by supraspinal control.
Collapse
Affiliation(s)
- Jan T. Groothuis
- From the Departments of Physiology (J.T.G., M.T.E.H.), Pharmacology-Toxicology (G.A.R., P.S.), General Internal Medicine (J.D.), Intensive Care Medicine (P.P.), and Rehabilitation (A.C.H.G.), Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands; Department of Rehabilitation (J.T.G., A.C.H.G.), Sint Maartenskliniek, Nijmegen, The Netherlands; Division of Pharmacology, Vascular and Metabolic Diseases (A.H.J.D.), Department of Internal Medicine, Erasmus MC, Rotterdam, The Netherlands
| | - Gerard A. Rongen
- From the Departments of Physiology (J.T.G., M.T.E.H.), Pharmacology-Toxicology (G.A.R., P.S.), General Internal Medicine (J.D.), Intensive Care Medicine (P.P.), and Rehabilitation (A.C.H.G.), Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands; Department of Rehabilitation (J.T.G., A.C.H.G.), Sint Maartenskliniek, Nijmegen, The Netherlands; Division of Pharmacology, Vascular and Metabolic Diseases (A.H.J.D.), Department of Internal Medicine, Erasmus MC, Rotterdam, The Netherlands
| | - Jaap Deinum
- From the Departments of Physiology (J.T.G., M.T.E.H.), Pharmacology-Toxicology (G.A.R., P.S.), General Internal Medicine (J.D.), Intensive Care Medicine (P.P.), and Rehabilitation (A.C.H.G.), Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands; Department of Rehabilitation (J.T.G., A.C.H.G.), Sint Maartenskliniek, Nijmegen, The Netherlands; Division of Pharmacology, Vascular and Metabolic Diseases (A.H.J.D.), Department of Internal Medicine, Erasmus MC, Rotterdam, The Netherlands
| | - Peter Pickkers
- From the Departments of Physiology (J.T.G., M.T.E.H.), Pharmacology-Toxicology (G.A.R., P.S.), General Internal Medicine (J.D.), Intensive Care Medicine (P.P.), and Rehabilitation (A.C.H.G.), Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands; Department of Rehabilitation (J.T.G., A.C.H.G.), Sint Maartenskliniek, Nijmegen, The Netherlands; Division of Pharmacology, Vascular and Metabolic Diseases (A.H.J.D.), Department of Internal Medicine, Erasmus MC, Rotterdam, The Netherlands
| | - A. H. Jan Danser
- From the Departments of Physiology (J.T.G., M.T.E.H.), Pharmacology-Toxicology (G.A.R., P.S.), General Internal Medicine (J.D.), Intensive Care Medicine (P.P.), and Rehabilitation (A.C.H.G.), Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands; Department of Rehabilitation (J.T.G., A.C.H.G.), Sint Maartenskliniek, Nijmegen, The Netherlands; Division of Pharmacology, Vascular and Metabolic Diseases (A.H.J.D.), Department of Internal Medicine, Erasmus MC, Rotterdam, The Netherlands
| | - Alexander C.H. Geurts
- From the Departments of Physiology (J.T.G., M.T.E.H.), Pharmacology-Toxicology (G.A.R., P.S.), General Internal Medicine (J.D.), Intensive Care Medicine (P.P.), and Rehabilitation (A.C.H.G.), Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands; Department of Rehabilitation (J.T.G., A.C.H.G.), Sint Maartenskliniek, Nijmegen, The Netherlands; Division of Pharmacology, Vascular and Metabolic Diseases (A.H.J.D.), Department of Internal Medicine, Erasmus MC, Rotterdam, The Netherlands
| | - Paul Smits
- From the Departments of Physiology (J.T.G., M.T.E.H.), Pharmacology-Toxicology (G.A.R., P.S.), General Internal Medicine (J.D.), Intensive Care Medicine (P.P.), and Rehabilitation (A.C.H.G.), Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands; Department of Rehabilitation (J.T.G., A.C.H.G.), Sint Maartenskliniek, Nijmegen, The Netherlands; Division of Pharmacology, Vascular and Metabolic Diseases (A.H.J.D.), Department of Internal Medicine, Erasmus MC, Rotterdam, The Netherlands
| | - Maria T.E. Hopman
- From the Departments of Physiology (J.T.G., M.T.E.H.), Pharmacology-Toxicology (G.A.R., P.S.), General Internal Medicine (J.D.), Intensive Care Medicine (P.P.), and Rehabilitation (A.C.H.G.), Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands; Department of Rehabilitation (J.T.G., A.C.H.G.), Sint Maartenskliniek, Nijmegen, The Netherlands; Division of Pharmacology, Vascular and Metabolic Diseases (A.H.J.D.), Department of Internal Medicine, Erasmus MC, Rotterdam, The Netherlands
| |
Collapse
|
32
|
Sander MH, Roerink SH, Thijssen DH, Hopman MT. Comparison Of Two Methods To Measure Leg Conduit And Resistance Artery Vascular Function In Older Subjects. Med Sci Sports Exerc 2009. [DOI: 10.1249/01.mss.0000353604.42878.3d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
33
|
Hillen A, Sander MH, van Dijk AP, Hopman MT. Effects Of Aging On Left Ventricular Function Examined With Echocardiography And Doppler Tissue Velocity Imaging. Med Sci Sports Exerc 2009. [DOI: 10.1249/01.mss.0000354127.41549.59] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
34
|
Eijsvogels TM, Thijssen DH, Hopman MT. Gender Differences In Fluid And Electrolyte Balance During Endurance Exercise. Med Sci Sports Exerc 2009. [DOI: 10.1249/01.mss.0000355275.79503.f0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
35
|
Eysvogels T, Thijssen DH, Poelkens F, Wouters S, Binkhorst M, Schouwenberg B, Hopman MT. The Influence Of 4-days Walking Exercise On Core Temperature, Plasma Volume And Sodium-concentration. Med Sci Sports Exerc 2008. [DOI: 10.1249/01.mss.0000322670.19992.50] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
36
|
Hopman MT. Introduction and Overview. Med Sci Sports Exerc 2008. [DOI: 10.1249/01.mss.0000323656.89417.4b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
37
|
Degens H, Koşar ŞN, Hopman MT, de Haan A. The time course of denervation-induced changes is similar in soleus muscles of adult and old rats. Appl Physiol Nutr Metab 2008; 33:299-308. [DOI: 10.1139/h07-189] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Muscle denervation is accompanied by atrophy and a decline in oxidative capacity. We investigated whether the time course of adaptations following denervation of the soleus muscle differs in adult (5 months old) and older adult (25 months old) rats. We denervated the soleus muscle of the left leg, while the right leg served as an internal control. Two weeks after denervation, muscle mass was decreased both in adult and old animals to, respectively, 57% and 54% (p < 0.001) and capillary to fibre ratio (C:F) decreased to 51% and 50% (p < 0.01) of the control values. Yet, the capillary density was increased in older adult but not in adult muscles, indicating that the regression of the capillary bed during denervation lags behind the decrease in fibre size in the soleus muscle of the older rats. One week after denervation the optical density of sections stained for succinate dehydrogenase was 83% and 79% (p < 0.05) of control adult and older adult muscles, respectively, and then remained stable. This indicates that during the first week of denervation loss of oxidative capacity occurred at a relatively higher rate than that of muscle mass. No major changes occurred between 2 and 4 weeks of denervation, except for an increase in the proportion of hybrid (I/IIa) fibres in 4 week denervated muscles (adult 10% vs. 23%; old 1% vs. 13%; p < 0.05). Except for changes in capillarisation, the time course of atrophy and decrease in oxidative capacity following denervation was similar in soleus muscles from adult and old rats.
Collapse
Affiliation(s)
- Hans Degens
- Institute for Biomedical Research into Human Movement and Health, Manchester Metropolitan University, Hassall Road, Alsager, ST7 2HL, UK
- Research Institute MOVE, Faculty of Human Movement Sciences VU University Amsterdam, the Netherlands
- Hacettepe University, School of Sports Sciences and Technology, 06532 Beytepe, Ankara, Turkey
- University Medical Centre Nijmegen, Department of Physiology, Nijmegen, the Netherlands
| | - Şükran Nazan Koşar
- Institute for Biomedical Research into Human Movement and Health, Manchester Metropolitan University, Hassall Road, Alsager, ST7 2HL, UK
- Research Institute MOVE, Faculty of Human Movement Sciences VU University Amsterdam, the Netherlands
- Hacettepe University, School of Sports Sciences and Technology, 06532 Beytepe, Ankara, Turkey
- University Medical Centre Nijmegen, Department of Physiology, Nijmegen, the Netherlands
| | - Maria T.E. Hopman
- Institute for Biomedical Research into Human Movement and Health, Manchester Metropolitan University, Hassall Road, Alsager, ST7 2HL, UK
- Research Institute MOVE, Faculty of Human Movement Sciences VU University Amsterdam, the Netherlands
- Hacettepe University, School of Sports Sciences and Technology, 06532 Beytepe, Ankara, Turkey
- University Medical Centre Nijmegen, Department of Physiology, Nijmegen, the Netherlands
| | - Arnold de Haan
- Institute for Biomedical Research into Human Movement and Health, Manchester Metropolitan University, Hassall Road, Alsager, ST7 2HL, UK
- Research Institute MOVE, Faculty of Human Movement Sciences VU University Amsterdam, the Netherlands
- Hacettepe University, School of Sports Sciences and Technology, 06532 Beytepe, Ankara, Turkey
- University Medical Centre Nijmegen, Department of Physiology, Nijmegen, the Netherlands
| |
Collapse
|
38
|
Kooijman M, Poelkens F, Rongen GA, Smits P, Hopman MT. Leg blood flow measurements using venous occlusion plethysmography during head-up tilt. Clin Auton Res 2007; 17:106-11. [PMID: 17345054 PMCID: PMC1914255 DOI: 10.1007/s10286-007-0402-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2006] [Accepted: 01/24/2007] [Indexed: 11/25/2022]
Abstract
We tested whether venous occlusion plethysmography (VOP) is an appropriate method to measure calf blood flow (CBF) during head-up tilt (HUT). CBF measured with VOP was compared with superficial femoral artery blood flow as measured by Doppler ultrasound during incremental tilt angles. Measurements of both methods correlated well (r = 0.86). Reproducibility of VOP was fair in supine position and 30° HUT (CV: 11%–15%). This indicates that VOP is an applicable tool to measure leg blood flow during HUT, especially up to 30° HUT.
Collapse
Affiliation(s)
- Miriam Kooijman
- Dept. of Physiology, Radboud University Nijmegen Medical Centre, Ïnstitute for Fundamental and Clinical Movement Sciences, PO Box 9101, 6500 HB Nijmegen, The Netherlands
- Rehabilitation Centre, Sint Maartenskliniek, Nijmegen, The Netherlands
| | - Fleur Poelkens
- Dept. of Physiology, Radboud University Nijmegen Medical Centre, Ïnstitute for Fundamental and Clinical Movement Sciences, PO Box 9101, 6500 HB Nijmegen, The Netherlands
| | - Gerard A. Rongen
- Dept. of Pharmacology-Toxicology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - Paul Smits
- Dept. of Pharmacology-Toxicology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - Maria T.E. Hopman
- Dept. of Physiology, Radboud University Nijmegen Medical Centre, Ïnstitute for Fundamental and Clinical Movement Sciences, PO Box 9101, 6500 HB Nijmegen, The Netherlands
| |
Collapse
|
39
|
van Duijnhoven NT, de Groot PC, Bleeker MW, Thijssen DH, Hopman MT. The Effect of 52 Days Bed Rest on the Popliteal Venous Compliance in Healthy Subjects. Med Sci Sports Exerc 2006. [DOI: 10.1249/00005768-200611001-00144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
40
|
Thijssen DH, Rongen G, Smits P, Hopman MT. The Effects of Aging and Exercise Training on Endothelin-1 Vasoconstrictor Responses in Healthy Sedentary Elderly. Med Sci Sports Exerc 2006. [DOI: 10.1249/00005768-200605001-01076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
41
|
Thijssen D, Rongen G, Smits P, Hopman MT. Decreased Contribution Of Endothelin To Vascular Tone In Spinal Cord-injured Individuals After Training. Med Sci Sports Exerc 2005. [DOI: 10.1249/00005768-200505001-00284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
42
|
Janssen TW, Buffart LM, Mathijssen NM, Hollander AP, Smit CA, Hopman MT. Cardiovascular Responses to Electrical Stimulation-Induced Leg Cycling Versus Voluntary Arm Cranking Exercise. Med Sci Sports Exerc 2004. [DOI: 10.1249/00005768-200405001-00282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
43
|
Houtman S, Serrador JM, Colier WN, Strijbos DW, Shoemaker K, Hopman MT. Changes in cerebral oxygenation and blood flow during LBNP in spinal cord-injured individuals. J Appl Physiol (1985) 2001; 91:2199-204. [PMID: 11641362 DOI: 10.1152/jappl.2001.91.5.2199] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Spinal cord-injured (SCI) individuals, having a sympathetic nervous system lesion, experience hypotension during sitting and standing. Surprisingly, they experience few syncopal events. This suggests adaptations in cerebrovascular regulation. Therefore, changes in systemic circulation, cerebral blood flow, and oxygenation in eight SCI individuals were compared with eight able-bodied (AB) individuals. Systemic circulation was manipulated by lower body negative pressure at several levels down to -60 mmHg. At each level, we measured steady-state blood pressure, changes in cerebral blood velocity with transcranial Doppler, and cerebral oxygenation using near-infrared spectroscopy. We found that mean arterial pressure decreased significantly in SCI but not in AB individuals, in accordance with the sympathetic impairment in the SCI group. Cerebral blood flow velocity decreased during orthostatic stress in both groups, but this decrease was significantly greater in SCI individuals. Cerebral oxygenation decreased in both groups, with a tendency to a greater decrease in SCI individuals. Thus present data do not support an advantageous mechanism during orthostatic stress in the cerebrovascular regulation of SCI individuals.
Collapse
Affiliation(s)
- S Houtman
- Department of Physiology, University Medical Center Nijmegen, 6500 HB Nijmegen, The Netherlands.
| | | | | | | | | | | |
Collapse
|
44
|
Van Beekvelt MC, Shoemaker JK, Tschakovsky ME, Hopman MT, Hughson RL. Blood flow and muscle oxygen uptake at the onset and end of moderate and heavy dynamic forearm exercise. Am J Physiol Regul Integr Comp Physiol 2001; 280:R1741-7. [PMID: 11353679 DOI: 10.1152/ajpregu.2001.280.6.r1741] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We hypothesized that forearm blood flow (FBF) during moderate intensity dynamic exercise would meet the demands of the exercise and that postexercise FBF would quickly recover. In contrast, during heavy exercise, FBF would be inadequate causing a marked postexercise hyperemia and sustained increase in muscle oxygen uptake (VO(2musc)). Six subjects did forearm exercise (1-s contraction/relaxation, 1-s pause) for 5 min at 25 and 75% of peak workload. FBF was determined by Doppler ultrasound, and O(2) extraction was estimated from venous blood samples. In moderate exercise, FBF and VO(2musc) increased within 2 min to steady state. Rapid recovery to baseline suggested adequate O(2) supply during moderate exercise. In contrast, FBF was not adequate during heavy dynamic exercise. Immediately postexercise, there was an approximately 50% increase in FBF. Furthermore, we observed for the first time in the recovery period an increase in VO(2musc) above end-exercise values. During moderate exercise, O(2) supply met requirements, but with heavy forearm exercise, inadequate O(2) supply during exercise caused accumulation of a large O(2) deficit that was repaid during recovery.
Collapse
Affiliation(s)
- M C Van Beekvelt
- Department of Kinesiology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | | | | | | | | |
Collapse
|
45
|
Gerrits HL, de Haan A, Sargeant AJ, van Langen H, Hopman MT. Peripheral vascular changes after electrically stimulated cycle training in people with spinal cord injury. Arch Phys Med Rehabil 2001; 82:832-9. [PMID: 11387591 DOI: 10.1053/apmr.2001.23305] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE To test whether a short period of training leads to adaptations in the cross-sectional area of large conduit arteries and improved blood flow to the paralyzed legs of individuals with spinal cord injury (SCI). DESIGN Before-after trial. SETTING Rehabilitation center, academic medical center. PARTICIPANTS Nine men with spinal cord lesions. INTERVENTION Six weeks of cycling using a functional electrically stimulated leg cycle ergometer (FES-LCE). MAIN OUTCOME MEASURES Longitudinal images and simultaneous velocity spectra were measured in the common carotid (CA) and femoral (FA) arteries using quantitative duplex Doppler ultrasound examination. Arterial diameters, peak systolic inflow volumes (PSIVs), mean inflow volumes (MIVs), and a velocity index (VI), representing the peripheral resistance, were obtained at rest. PSIVs and VI were obtained during 3 minutes of hyperemia following 20 minutes of FA occlusion. RESULTS Training resulted in significant increases in diameter (p < .01), PSIVs (p < .01), and MIVs (p < .05), and reduced VI (p < .01) of the FA, whereas values in the CA remained unchanged. Postocclusive hyperemic responses were augmented, indicated by significantly higher PSIVs (p <.01) and a trend toward lower VI. CONCLUSION Six weeks of FES-LCE training increased the cross-sectional area of large conduit arteries and improved blood flow to the paralyzed legs of individuals with SCI.
Collapse
Affiliation(s)
- H L Gerrits
- Institute for Fundamental and Clinical Human Movement Sciences, Vrije University Amsterdam, Amsterdam, the Netherlands.
| | | | | | | | | |
Collapse
|
46
|
Gerrits HL, Hopman MT, Sargeant AJ, de Haan A. Reproducibility of contractile properties of the human paralysed and non-paralysed quadriceps muscle. Clin Physiol 2001; 21:105-13. [PMID: 11168304 DOI: 10.1046/j.1365-2281.2001.00293.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
This study assessed the reproducibility of electrically evoked, isometric quadriceps contractile properties in eight people with spinal cord injury (SCI) and eight able-bodied (AB) individuals. Over all, the pooled coefficients of variation (CVps) in the SCI group were significantly lower (ranging from 0.03 to 0.15) than in the AB group (ranging from 0.08 to 0.21) (P<0.05). Furthermore, in all subjects, the variability of force production increased as stimulation frequency decreased (P<0.01). In subjects with SCI, variables of contractile speed are clearly less reproducible than tetanic tension or resistance to fatigue. Contractile properties of quadriceps muscles of SCI subjects were significantly different from that of AB subjects. Muscles of people with SCI were less fatigue resistant (P<0.05) and produced force-frequency relationships that were shifted to the left, compared with AB controls (P<.01). In addition, fusion of force responses resulting from 10 Hz stimulation was reduced (P<.05) and speed of contraction (but not relaxation) was increased (P<0.05), indicating an increased contractile speed in paralysed muscles compared with non-paralysed muscles. These results correspond with an expected predominance of fast glycolytic muscle fibres in paralysed muscles. It is concluded that quadriceps dynamometry is a useful technique to study muscle function in non-paralysed as well as in paralysed muscles. Furthermore, these techniques can be reliably used, for example, to assess therapeutic interventions on paralysed muscles provided that expected differences in relative tetanic tension and fatigue resistance are larger than approximately 5% and differences in contractile speed are larger than approximately 15%.
Collapse
Affiliation(s)
- H L Gerrits
- Institute for Fundamental and Clinical Human Movement Sciences, Vrije University Amsterdam, v/d Boechorststraat 9, 1081 BT Amsterdam, The Netherlands
| | | | | | | |
Collapse
|
47
|
van Beekvelt MC, van Asten WN, Hopman MT. The effect of electrical stimulation on leg muscle pump activity in spinal cord-injured and able-bodied individuals. Eur J Appl Physiol 2000; 82:510-6. [PMID: 10985609 DOI: 10.1007/s004210000211] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The purpose of this study was to examine the difference in: (1) effective muscle pump activity (MPA) between voluntary and electrically (ES) induced contractions in able-bodied subjects (ABS); and (2) ES-induced MPA between spinal cord-injured (SCI) individuals and ABS. MPA was measured as relative volume changes in the calf using strain-gauge plethysmography during repeated muscle contractions in the supine position while venous outflow was impeded by a thigh cuff inflated to a range of pressures. Ten SCI individuals and ten ABS participated in this study. ABS showed no significant difference between voluntary and electrically induced MPA [58.1 (18.4)% versus 67.7 (8.7)%, respectively]. SCI individuals showed a significantly lower ES-induced MPA than ABS [21.5 (15.9)% versus 67.7 (8.7)%, respectively]. The low MPA in SCI individuals may be explained by: (1) extensive leg muscle atrophy and/or (2) an "atrophic" vascular system in the legs. The electrical current level seemed to influence MPA (43 mA, 21.5% versus 60 mA, 30.8%) for SCI individuals, whereas no influence of muscle contraction rate on MPA was observed in ABS. The results of this study demonstrate that although ES-induced leg muscle contractions result in adequate MPA in ABS, it leads to significantly less effective MPA in SCI individuals.
Collapse
Affiliation(s)
- M C van Beekvelt
- Department of Physiology, University of Nijmegen, The Netherlands.
| | | | | |
Collapse
|
48
|
Houtman S, Oeseburg B, Hughson RL, Hopman MT. Sympathetic nervous system activity and cardiovascular homeostatis during head-up tilt in patients with spinal cord injuries. Clin Auton Res 2000; 10:207-12. [PMID: 11029019 DOI: 10.1007/bf02291358] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The relationship between sympathetic nervous system activity and cardiovascular responses to head-up tilt in patients with spinal cord injuries and in able-bodied subjects was studied. Twenty-seven adults, nine in each of the three groups (tetraplegia, paraplegia, and able-bodied subjects) were tilted 70 degrees, head up, for 12 minutes after 20 minutes supine rest. Differences between steady-state measurements of mean arterial pressure, stroke volume, and sympathetic nervous system activity were estimated in both positions. Sympathetic nervous system activity was reflected by the low-frequency peak of the blood pressure variability spectrum. From supine rest to head-up tilt, low-frequency power increased in able-bodied subjects (median, 0.42 mm Hg2, p = 0.003), which was different (p = 0.015) from patients with tetraplegia and paraplegia (-0.15 and -0.10 mm Hg2, respectively). Stroke volume and mean arterial pressure decreased in patients with tetraplegia (-40% and -9 mm Hg, respectively; p = 0.008, both variables) more than in able-bodied subjects (-33%, 11 mm Hg, respectively) or patients with paraplegia (-24%, 8 mm Hg, respectively). Results indicated increased sympathetic nervous system activity during head-up tilt in able-bodied subjects, but not in patients with paraplegia or tetraplegia, whereas patients with tetraplegia, but not paraplegia, showed poorer cardiovascular homeostasis than able-bodied subjects. This suggests that patients with paraplegia maintained cardiovascular homeostasis during head-up tilt without increased sympathetic nervous system activity.
Collapse
Affiliation(s)
- S Houtman
- Department of Physiology, University of Nijmegen, The Netherlands.
| | | | | | | |
Collapse
|
49
|
Abstract
OBJECTIVE The main purpose of this study was to investigate the difference in total blood volume and hemoglobin mass between spinal cord-injured and able-bodied individuals. DESIGN Total blood volumes of 13 able-bodied and 10 spinal cord-injured individuals (lesion >T4) were determined using the carbon monoxide method. The reproducibility of the total blood volume determination in our setting and the effect of increased physical activity were assessed. RESULTS Comparison of groups showed a significantly higher hemoglobin mass in able-bodied compared with spinal cord-injured individuals. The total blood volume expressed per kilogram of body mass in able-bodied individuals was significantly greater than in spinal cord-injured individuals. CONCLUSIONS These results suggest that total blood volume and hemoglobin mass are decreased in spinal cord-injured individuals with a lesion above T4, which may be related to their inactive lifestyle, because total blood volume increased with increased physical activity in these subjects.
Collapse
Affiliation(s)
- S Houtman
- Department of Physiology, University of Nijmegen, The Netherlands
| | | | | |
Collapse
|
50
|
Gerrits HL, de Haan A, Sargeant AJ, Dallmeijer A, Hopman MT. Altered contractile properties of the quadriceps muscle in people with spinal cord injury following functional electrical stimulated cycle training. Spinal Cord 2000; 38:214-23. [PMID: 10822391 DOI: 10.1038/sj.sc.3100974] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
STUDY DESIGN A longitudinal training study. OBJECTIVES To assess if contractile speed and fatigability of paralysed quadriceps muscles in individuals with spinal cord injury (SCI) can be altered by functional electrical stimulation leg cycle ergometry (FES-LCE) training. SETTINGS The Sint Maartenskliniek rehabilitation centre and the University of Nijmegen, Nijmegen, the Netherlands. METHODS Contractile properties of the quadriceps muscle were studied in seven people with motor-complete SCI who participated in a FES-LCE training program. Subjects trained for 30 min, three times per week for 6 weeks. Contractile speed and fatigue characteristics of electrically stimulated isometric contractions were compared before and after 6 weeks of FES-LCE. RESULTS Fatigue resistance improved following FES-LCE training as indicated by the higher forces maintained in response to repetitive electrical stimulation. In contrast with an improved fatigue resistance, the maximal rate of force rise was unaffected, the speed of relaxation increased and the fusion of a 10 Hz force signal decreased. Furthermore, the force-frequency relationship shifted to the right at low stimulation frequencies, indicated by a decline in the ratio of 1 and 100 Hz force responses as well as the ratio of 10 and 100 Hz force responses. CONCLUSION FES-LCE training can change the physiological properties of the quadriceps muscle in people with SCI. Even after a short period of training, the stimulated muscles become more resistant to fatigue. Furthermore, the increased speed of relaxation and associated decreased fusion and altered force-frequency relationship following training may be related to adaptations in the calcium handling processes, which reflect an early response of long-term disused muscles.
Collapse
Affiliation(s)
- H L Gerrits
- Institute for Fundamental and Clinical Human Movement Sciences, Vrije University Amsterdam, The Netherlands
| | | | | | | | | |
Collapse
|