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Montt-Blanchard D, Dubois-Camacho K, Costa-Cordella S, Sánchez R. Domesticating the condition: Design lessons gained from a marathon on how to cope with barriers imposed by type 1 diabetes. Front Psychol 2022; 13:1013877. [PMID: 36420398 PMCID: PMC9677098 DOI: 10.3389/fpsyg.2022.1013877] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Accepted: 10/04/2022] [Indexed: 11/03/2023] Open
Abstract
Through analytical autoethnographic analysis of marathon preparation, this study examines challenges faced by people with Type 1 Diabetes (T1D) who engage in high-performance sports. Autoethnographer and second-person perspectives (T1D runners, family members, and health providers) were collected through introspective activities (autoethnographic diary and in-depth interviews) to understand the T1D runner's coping experience. Six insights involved in T1D self-management were identified and analyzed with reference to related design tools (prototyping, archetyping and journey mapping). Finally, we conclude with a discussion of how endurance physical activity (PA) such as running helps to "domesticate" T1D, a term coined to reflect the difficulties that T1D presents for PA accomplishment and how T1D runners' experiences give them an opportunity to overcome PA barriers promoting physical culture and enriching further health psychology studies.
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Affiliation(s)
| | - Karen Dubois-Camacho
- Faculty of Medicine, Institute of Biomedical Sciences, Universidad de Chile, Santiago, Chile
| | - Stefanella Costa-Cordella
- Faculty of Psychology, Universidad Diego Portales, Santiago, Chile
- Millennium Institute for Depression and Personality Research (MIDAP), Santiago, Chile
| | - Raimundo Sánchez
- Faculty of Engineering and Sciences, Universidad Adolfo Ibañez, Santiago, Chile
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Abedelmalek S, Aloui K, Boussetta N, Alahmadi B, Zouch M, Chtourou H, Souissi N. Does Opuntia ficus-indica Juice Supplementation Improve Biochemical and Cardiovascular Response to a 6-Minute Walk Test in Type 2 Diabetic Patients? MEDICINA (KAUNAS, LITHUANIA) 2022; 58:1561. [PMID: 36363518 PMCID: PMC9696711 DOI: 10.3390/medicina58111561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Revised: 10/03/2022] [Accepted: 10/06/2022] [Indexed: 11/11/2022]
Abstract
Background and objectives: The purpose of this study was to evaluate the effect of Opuntia ficus-indica juice (OFIJ) on performance and biochemical and physiological responses to a 6 min walking test (6MWT) in diabetic patients. Materials and Methods: Twenty diabetic patients performed a 6MWT at 07:00 h. During each test session, they were asked to drink 70 mL/day of natural OFIJ or placebo (PLA) for 4 days. Results: the results showed that cardiovascular parameters increased significantly after the 6MWT under both conditions. While, cortisol, HbA1c, cholesterol total (CT), triglycerides (TG), as well as low-density lipoprotein (LDL) were not modified between without and with supplementation. Likewise, no significant variation in performance was observed for PLA and OFIJ (p > 0.05). The cardiovascular parameters (heart rate max (HRmax), diastolic blood pressure (DBP), and systolic blood pressure (SBP)), lipid profile (CT, TG, LDL, and high-density lipoprotein HDL), hormonal parameters (insulin and glucagon), HbA1c and lactate ([La]) did not present any significant modification either between PLA or OFIJ (p > 0.05). Muscle-damage markers (creatine kinase (CK) and lactate dehydrogenase (LDH)], cortisol, and liver parameters (i.e., oxidative stress marker, γGT, and total bilirubin) as well as glucose (GLC) were affected by supplementation (p < 0.05) before and after the 6MWT, but this change was significant only for OFIJ (p < 0.05). Conclusion: OFIJ had an antioxidant capacity, improved performance of the 6MWT, and reduced muscle-damage markers and glucose level in type 2 diabetic patients.
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Affiliation(s)
- Salma Abedelmalek
- Laboratory of Physiology and Functional Exploration, Faculty of Medicine, Sousse 4002, Tunisia
- Department of Sport Science and Physical Activity, College of Education, University of Ha’il, Hail 55255, Saudi Arabia
| | - Khouloud Aloui
- Physical Activity, Sport, and Health, UR18JS01, National Observatory of Sport, Tunis 1003, Tunisia
| | - Nesrine Boussetta
- Physical Activity, Sport, and Health, UR18JS01, National Observatory of Sport, Tunis 1003, Tunisia
| | - Bayan Alahmadi
- Department of Sport Science and Physical Activity, College of Education, University of Ha’il, Hail 55255, Saudi Arabia
| | - Mohamed Zouch
- Laboratory of Physiology and Functional Exploration, Faculty of Medicine, Sousse 4002, Tunisia
- Department of Sport Science and Physical Activity, College of Education, University of Ha’il, Hail 55255, Saudi Arabia
| | - Hamdi Chtourou
- Physical Activity, Sport, and Health, UR18JS01, National Observatory of Sport, Tunis 1003, Tunisia
- High Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax 3000, Tunisia
| | - Nizar Souissi
- Physical Activity, Sport, and Health, UR18JS01, National Observatory of Sport, Tunis 1003, Tunisia
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Thuillier P, Domun N, Sonnet E, Le Ven F, Roudaut C, Kergus A, Kerlan V, Roudaut N. Prevention of exercise-induced hypoglycemia in 12 patients with type 1 diabetes running the Paris Marathon using continuous glucose monitoring: a prospective, single-center observational study. DIABETES & METABOLISM 2022; 48:101321. [PMID: 35032674 DOI: 10.1016/j.diabet.2022.101321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 12/09/2021] [Accepted: 12/13/2021] [Indexed: 10/19/2022]
Abstract
OBJECTIVE To investigate the glycemic balance before, during and after the 2016 Paris Marathon using a real-time continuous glucose monitoring (RT-CGM) system in patients with type 1 diabetes mellitus in a prospective single-center observational study. METHODS Inclusion criteria were as follows: type 1 diabetes mellitus; age ≥18 years; HbA1c < 9%. Participants performed two 2h-preparatory races (PR) before the Marathon and were monitored with RT-CGM 24h before, during and 72h after each race. Hypoglycemic events were prevented via carbohydrate intake / insulin dose adjustments. The primary outcome was area under the curve (AUC) < 70 and > 200 mg/dl and percentage of time spent in euglycemia, hypoglycemia, and hyperglycemia during the races. RESULTS Twelve patients (2F/10M; median HbA1c=6.8%) were included and completed the study. Median AUC < 70 and time spent in hypoglycemia (< 70 mg/dl) during the PRs and Marathon were equal to 0. However, no hypoglycemic episodes occurred during Marathon, while two patients experienced hypoglycemia during PR1 and PR2. There was a significant increase in AUC > 200 mg/dl during races between PR2 and Marathon (P = 0.009) although the median time spent > 200mg/dl was not statistically different in Marathon versus PR2 (48.4% versus 18.4%; P = 0.09). Median time spent in euglycemia (70-200 mg/dl) was lower in Marathon versus PR2 (51.6 versus 58%; P = 0.03). CONCLUSION Our study proposes a medical support protocol for extreme endurance physical activity in patients with type 1 diabetes mellitus. Our results suggest that RT-CGM, coupled with adjustments in carbohydrate intake and insulin doses, appears to be effective to prevent hypoglycemia during and after exercise.
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Affiliation(s)
- Philippe Thuillier
- Department of Endocrinology, University Hospital of Brest, France; EA GETBO 3878, University Hospital of Brest, France.
| | - Nikhil Domun
- Department of Endocrinology, University Hospital of Brest, France; EA GETBO 3878, University Hospital of Brest, France
| | - Emmanuel Sonnet
- Department of Endocrinology, University Hospital of Brest, France; EA GETBO 3878, University Hospital of Brest, France
| | - Florent Le Ven
- Department of Endocrinology, University Hospital of Brest, France; Department of Cardiology, University Hospital of Brest, France
| | - Caroline Roudaut
- Department of Endocrinology, University Hospital of Brest, France
| | - Anne Kergus
- Department of Endocrinology, University Hospital of Brest, France
| | - Véronique Kerlan
- Department of Endocrinology, University Hospital of Brest, France; EA GETBO 3878, University Hospital of Brest, France
| | - Nathalie Roudaut
- Department of Endocrinology, University Hospital of Brest, France; EA GETBO 3878, University Hospital of Brest, France
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Cigrovski Berkovic M, Bilic-Curcic I, La Grasta Sabolic L, Mrzljak A, Cigrovski V. Fear of hypoglycemia, a game changer during physical activity in type 1 diabetes mellitus patients. World J Diabetes 2021; 12:569-577. [PMID: 33995845 PMCID: PMC8107983 DOI: 10.4239/wjd.v12.i5.569] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 03/16/2021] [Accepted: 03/29/2021] [Indexed: 02/06/2023] Open
Abstract
Hypoglycemia limits optimal glycemic management of patients with type 1 diabetes mellitus (T1DM). Fear of hypoglycemia (FoH) is a significant psychosocial consequence that negatively impacts the willingness of T1DM patients to engage in and profit from the health benefits of regular physical activity (e.g., cardiometabolic health, improved body composition, cardiovascular fitness, quality of life). Technological advances, improved insulin regimens, and a better understanding of the physiology of various types of exercise could help ameliorate FoH. This narrative review summarizes the available literature on FoH in children and adults and tools to avoid it.
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Affiliation(s)
- Maja Cigrovski Berkovic
- Department of Endocrinology, Diabetes, Metabolism and Clinical Pharmacology, University Hospital Dubrava, Zagreb 10000, Croatia
| | - Ines Bilic-Curcic
- Department of Pharmacology, Faculty of Medicine, University of J. J. Strossmayer Osijek, Osijek 31000, Croatia
| | - Lavinia La Grasta Sabolic
- Department of Pediatric Endocrinology, Diabetes and Metabolism, University Hospital Centre Sestre Milosrdnice, Zagreb 10000, Croatia
| | - Anna Mrzljak
- Department of Medicine, Merkur University Hospital, Zagreb 10000, Croatia
- School of Medicine, University of Zagreb, Zagreb 10000, Croatia
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van den Boom L, Ziko H, Mader JK. Safely finishing a half marathon by an adult with type 1 diabetes using a commercially available hybrid closed-loop system. J Diabetes Investig 2020; 12:450-453. [PMID: 32652903 PMCID: PMC7926213 DOI: 10.1111/jdi.13356] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 06/29/2020] [Accepted: 07/07/2020] [Indexed: 01/13/2023] Open
Abstract
Glycemic targets are often difficult to achieve in people with type 1 diabetes, especially during exercise. Consequently, many people with type 1 diabetes avoid sports as a result of fear of hypoglycemia. Strenuous physical activity, such as a half marathon, imposes difficulties on people with type 1 diabetes. The first commercial hybrid closed‐loop (HCL) system with the potential to facilitate better diabetes management during exercise has recently been marketed. So far, no data on HCL performance during strenuous exercise have been published. A woman with well‐controlled type 1 diabetes participated in and safely finished a half marathon while undergoing HCL therapy. HCL could safely establish glycemic control without causing either hypo‐ or relevant hyperglycemia, and without the need for rescue carbohydrates while running. In the days after the half marathon, there was no change in glycemic control compared with the period before.
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Affiliation(s)
- Louisa van den Boom
- Division of Pediatric Diabetology, DRK-Kinderklinik Siegen gGmbH, Siegen, Germany
| | - Haris Ziko
- Endocrinology and Diabetology, Medical University of Graz, Graz, Austria
| | - Julia K Mader
- Endocrinology and Diabetology, Medical University of Graz, Graz, Austria
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McCarthy O, Eckstein ML, Scott SN, Fontana FY, Christiansen MP, Stettler C, Fisher M, Bode B, Riddell MC, Hayes C, Lagrou PL, Southerland P, Moser O, Bracken RM. Glycemic responses to strenuous training in male professional cyclists with type 1 diabetes: a prospective observational study. BMJ Open Diabetes Res Care 2020; 8:8/1/e001245. [PMID: 32303532 PMCID: PMC7199179 DOI: 10.1136/bmjdrc-2020-001245] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 03/12/2020] [Accepted: 03/24/2020] [Indexed: 01/25/2023] Open
Abstract
INTRODUCTION This prospective observational study sought to establish the glycemic, physiological and dietary demands of strenuous exercise training as part of a 9-day performance camp in a professional cycling team with type 1 diabetes (T1D). RESEARCH DESIGN AND METHODS Sixteen male professional cyclists with T1D on multiple daily injections (age: 27±4 years; duration of T1D: 11±5 years; body mass index: 22±2 kg/m2; glycated hemoglobin: 7%±1% (50±6 mmol/mol); maximum rate of oxygen consumption: 73±4 mL/kg/min) performed road cycle sessions (50%-90% of the anaerobic threshold, duration 1-6 hours) over 9 consecutive days. Glycemic (Dexcom G6), nutrition and physiological data were collected throughout. Glycemic data were stratified into predefined glycemic ranges and mapped alongside exercise physiology and nutritional parameters, as well as split into daytime and night-time phases for comparative analysis. Data were assessed by means of analysis of variance and paired t-tests. A p value of ≤0.05 (two-tailed) was statistically significant. RESULTS Higher levels of antecedent hypoglycemia in the nocturnal hours were associated with greater time spent in next-day hypoglycemia overall (p=0.003) and during exercise (p=0.019). Occurrence of nocturnal hypoglycemia was associated with over three times the risk of next-day hypoglycemia (p<0.001) and a twofold risk of low glucose during cycling (p<0.001). Moreover, there was trend for a greater amount of time spent in mild hypoglycemia during the night compared with daytime hours (p=0.080). CONCLUSION The higher prevalence of nocturnal hypoglycemia was associated with an increased risk of next-day hypoglycemia, which extended to cycle training sessions. These data highlight the potential need for additional prebed carbohydrates and/or insulin dose reduction strategies around exercise training in professional cyclists with T1D. TRIAL REGISTRATION NUMBER DRKS00019923.
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Affiliation(s)
- Olivia McCarthy
- Applied Sports, Technology, Exercise and Medicine, Swansea University, Swansea, West Glamorgan, UK
- Diabetes Research Group, Swansea University, Swansea, West Glamorgan, UK
| | - Max L Eckstein
- Cardiovascular Diabetology Research Group, Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz, Steiermark, Austria
| | - Sam N Scott
- Research Institute for Sport and Exercise Science, Liverpool John Moores University, Liverpool, UK
| | - Federico Y Fontana
- Department of Neurological and Movement Sciences, University of Verona, Verona, Veneto, Italy
- Team Novo Nordisk Professional Cycling Team, Atlanta, Georgia, USA
| | | | - Christoph Stettler
- Diabetes, Endocrinology, Nutritional Medicine and Metabolism, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | | | - Bruce Bode
- Department of Medicine, Emory University, Atlanta, Georgia, USA
| | - Michael C Riddell
- Kinesiology and Health Science, York University, Toronto, Ontario, Canada
| | - Charlotte Hayes
- Team Novo Nordisk Professional Cycling Team, Atlanta, Georgia, USA
| | - Peter L Lagrou
- Team Novo Nordisk Academic and Clinical Advisors, Team Novo Nordisk Professional Cycling Team, Atlanta, Georgia, USA
| | - Phil Southerland
- Team Novo Nordisk Professional Cycling Team, Atlanta, Georgia, USA
| | - Othmar Moser
- Cardiovascular Diabetology Research Group, Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz, Steiermark, Austria
| | - Richard M Bracken
- Applied Sports, Technology, Exercise and Medicine, Swansea University, Swansea, West Glamorgan, UK
- Diabetes Research Group, Swansea University, Swansea, West Glamorgan, UK
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Carbohydrate Intake in the Context of Exercise in People with Type 1 Diabetes. Nutrients 2019; 11:nu11123017. [PMID: 31835538 PMCID: PMC6950062 DOI: 10.3390/nu11123017] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 12/02/2019] [Accepted: 12/06/2019] [Indexed: 02/06/2023] Open
Abstract
Although the benefits of regular exercise on cardiovascular risk factors are well established for people with type 1 diabetes (T1D), glycemic control remains a challenge during exercise. Carbohydrate consumption to fuel the exercise bout and/or for hypoglycemia prevention is an important cornerstone to maintain performance and avoid hypoglycemia. The main strategies pertinent to carbohydrate supplementation in the context of exercise cover three aspects: the amount of carbohydrates ingested (i.e., quantity in relation to demands to fuel exercise and avoid hypoglycemia), the timing of the intake (before, during and after the exercise, as well as circadian factors), and the quality of the carbohydrates (encompassing differing carbohydrate types, as well as the context within a meal and the associated macronutrients). The aim of this review is to comprehensively summarize the literature on carbohydrate intake in the context of exercise in people with T1D.
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8
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Knechtle B, Nikolaidis PT. [Not Available]. PRAXIS 2017; 106:887-892. [PMID: 28795623 DOI: 10.1024/1661-8157/a002750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Zusammenfassung. Wir berichten über einen 64-jährigen Marathonläufer mit bisher 990 erfolgreich gefinishten Marathons, der fälschlicherweise mit Diabetes mellitus Typ 2 diagnostiziert und therapiert wurde. Unter peroraler Therapie mit Metformin kam es zu keiner Reduktion der Blutzuckerwerte. Nach korrekter Diagnose und Therapie mit Insulin ist der Läufer wieder voll im Training, um bald seinen 1000. Marathon zu laufen. Für Sportler mit Diabetes mellitus Typ 1 ist es wichtig, den Blutzucker vor, während und nach Belastung zu messen und die Insulindosis individuell während eines Wettkampfs, wie etwa einem Marathon, zu reduzieren.
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Riddell MC, Gallen IW, Smart CE, Taplin CE, Adolfsson P, Lumb AN, Kowalski A, Rabasa-Lhoret R, McCrimmon RJ, Hume C, Annan F, Fournier PA, Graham C, Bode B, Galassetti P, Jones TW, Millán IS, Heise T, Peters AL, Petz A, Laffel LM. Exercise management in type 1 diabetes: a consensus statement. Lancet Diabetes Endocrinol 2017; 5:377-390. [PMID: 28126459 DOI: 10.1016/s2213-8587(17)30014-1] [Citation(s) in RCA: 482] [Impact Index Per Article: 68.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Revised: 11/20/2016] [Accepted: 11/21/2016] [Indexed: 12/28/2022]
Abstract
Type 1 diabetes is a challenging condition to manage for various physiological and behavioural reasons. Regular exercise is important, but management of different forms of physical activity is particularly difficult for both the individual with type 1 diabetes and the health-care provider. People with type 1 diabetes tend to be at least as inactive as the general population, with a large percentage of individuals not maintaining a healthy body mass nor achieving the minimum amount of moderate to vigorous aerobic activity per week. Regular exercise can improve health and wellbeing, and can help individuals to achieve their target lipid profile, body composition, and fitness and glycaemic goals. However, several additional barriers to exercise can exist for a person with diabetes, including fear of hypoglycaemia, loss of glycaemic control, and inadequate knowledge around exercise management. This Review provides an up-to-date consensus on exercise management for individuals with type 1 diabetes who exercise regularly, including glucose targets for safe and effective exercise, and nutritional and insulin dose adjustments to protect against exercise-related glucose excursions.
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Affiliation(s)
- Michael C Riddell
- Muscle Health Research Centre, York University, Toronto, ON, Canada.
| | - Ian W Gallen
- Royal Berkshire NHS Foundation Trust Centre for Diabetes and Endocrinology, Royal Berkshire Hospital, Reading, UK
| | - Carmel E Smart
- Hunter Medical Research Institute, School of Health Sciences, University of Newcastle, Rankin Park, NSW, Australia
| | - Craig E Taplin
- Division of Endocrinology and Diabetes, Department of Pediatrics, University of Washington, Seattle Children's Hospital, Seattle, WA, USA
| | - Peter Adolfsson
- Department of Pediatrics, The Hospital of Halland, Kungsbacka, Sweden; Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Alistair N Lumb
- Oxford Centre for Diabetes, Endocrinology and Metabolism, Churchill Hospital, Oxford, UK
| | - Aaron Kowalski
- Juvenile Diabetes Research Foundation, New York, NY, USA
| | - Remi Rabasa-Lhoret
- Department of Nutrition and Institut de Recherches Cliniques de Montréal, Faculty of Medicine, Université de Montréal, Montreal, QC, Canada
| | - Rory J McCrimmon
- Division of Molecular and Clinical Medicine, School of Medicine, University of Dundee, Dundee, UK
| | | | - Francesca Annan
- Children and Young People's Diabetes Service, University College London Hospitals NHS Foundation Trust, London, UK
| | - Paul A Fournier
- School of Sport Science, Exercise, and Health, Perth, WA, Australia
| | | | - Bruce Bode
- Atlanta Diabetes Associates, Atlanta, GA, USA
| | - Pietro Galassetti
- Department of Pediatrics, University of California Irvine, Irvine, CA, USA; AstraZeneca, Gaithersburg, MD, USA
| | - Timothy W Jones
- The University of Western Australia, Perth, WA, Australia; Department of Endocrinology and Diabetes, Princess Margaret Hospital for Children, Perth, WA, Australia; Telethon Kids Institute, Perth, WA, Australia
| | - Iñigo San Millán
- Department of Physical Medicine and Rehabilitation, University of Colorado, School of Medicine, Aurora, CO, USA
| | | | - Anne L Peters
- Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | | | - Lori M Laffel
- Division of Endocrinology, Boston Children's Hospital, Boston, MA, USA; Pediatric, Adolescent and Young Adult Section, Joslin Diabetes Center, Boston, MA, USA
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Osborne DM, O'Leary KE, Fitzgerald DP, George AJ, Vidal MM, Anderson BM, McNay EC. Context-dependent memory following recurrent hypoglycaemia in non-diabetic rats is mediated via glucocorticoid signalling in the dorsal hippocampus. Diabetologia 2017; 60:182-191. [PMID: 27681242 PMCID: PMC5136318 DOI: 10.1007/s00125-016-4114-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 08/23/2016] [Indexed: 11/24/2022]
Abstract
AIMS/HYPOTHESIS Recurrent hypoglycaemia is primarily caused by repeated over-administration of insulin to patients with diabetes. Although cognition is impaired during hypoglycaemia, restoration of euglycaemia after recurrent hypoglycaemia is associated with improved hippocampally mediated memory. Recurrent hypoglycaemia alters glucocorticoid secretion in response to hypoglycaemia; glucocorticoids are well established to regulate hippocampal processes, suggesting a possible mechanism for recurrent hypoglycaemia modulation of subsequent cognition. We tested the hypothesis that glucocorticoids within the dorsal hippocampus might mediate the impact of recurrent hypoglycaemia on hippocampal cognitive processes. METHODS We characterised changes in the dorsal hippocampus at several time points to identify specific mechanisms affected by recurrent hypoglycaemia, using a well-validated 3 day model of recurrent hypoglycaemia either alone or with intrahippocampal delivery of glucocorticoid (mifepristone) and mineralocorticoid (spironolactone) receptor antagonists prior to each hypoglycaemic episode. RESULTS Recurrent hypoglycaemia enhanced learning and also increased hippocampal expression of glucocorticoid receptors, serum/glucocorticoid-regulated kinase 1, cyclic AMP response element binding (CREB) phosphorylation, and plasma membrane levels of α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) and N-methyl-D-aspartic acid (NMDA) receptors. Both hippocampus-dependent memory enhancement and the molecular changes were reversed by glucocorticoid receptor antagonist treatment. CONCLUSIONS/INTERPRETATION These results indicate that increased glucocorticoid signalling during recurrent hypoglycaemia produces several changes in the dorsal hippocampus that are conducive to enhanced hippocampus-dependent contextual learning. These changes appear to be adaptive, and in addition to supporting cognition may reduce damage otherwise caused by repeated exposure to severe hypoglycaemia.
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Affiliation(s)
- Danielle M Osborne
- Behavioural Neuroscience, University at Albany, 1400 Washington Avenue, Albany, NY, 12222, USA
| | | | | | - Alvin J George
- Biological Sciences, University at Albany, Albany, NY, USA
| | | | | | - Ewan C McNay
- Behavioural Neuroscience, University at Albany, 1400 Washington Avenue, Albany, NY, 12222, USA.
- Biological Sciences, University at Albany, Albany, NY, USA.
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Special Considerations in Medical Screening for Participants in Remote Endurance Events. Sports Med 2016; 45:1121-31. [PMID: 26002285 DOI: 10.1007/s40279-015-0342-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
As participation at remote endurance events increases, so does the need to screen participants for potentially problematic medical conditions, but this process has been ill-defined to date. This article aims to outline a general approach to screening and discusses common or important medical conditions that may need consideration in the screening process. Medical conditions that are considered low risk may translate to high-risk conditions in the setting of a remote and austere location. Medical directors of remote endurance events should have a familiarity with assessing risks and applying informed consent principles to participation. While there are no specific standards on medical disqualification from an event based on medical history alone, several systematic considerations should be made that allow for an assessment of risk to an individual for a specific event. The medical director and event director, in discussion with the athlete and treating clinician when appropriate, should come to a consensus on participation when high-risk medical conditions become apparent during the screening process. Both modifications and accommodations to participation may be used to mitigate both clinical and medicolegal risk and allow for participation.
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Umpierrez G, Korytkowski M. Diabetic emergencies - ketoacidosis, hyperglycaemic hyperosmolar state and hypoglycaemia. Nat Rev Endocrinol 2016; 12:222-32. [PMID: 26893262 DOI: 10.1038/nrendo.2016.15] [Citation(s) in RCA: 243] [Impact Index Per Article: 30.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Diabetic ketoacidosis (DKA), hyperglycaemic hyperosmolar state (HHS) and hypoglycaemia are serious complications of diabetes mellitus that require prompt recognition, diagnosis and treatment. DKA and HHS are characterized by insulinopaenia and severe hyperglycaemia; clinically, these two conditions differ only by the degree of dehydration and the severity of metabolic acidosis. The overall mortality recorded among children and adults with DKA is <1%. Mortality among patients with HHS is ~10-fold higher than that associated with DKA. The prognosis and outcome of patients with DKA or HHS are determined by the severity of dehydration, the presence of comorbidities and age >60 years. The estimated annual cost of hospital treatment for patients experiencing hyperglycaemic crises in the USA exceeds US$2 billion. Hypoglycaemia is a frequent and serious adverse effect of antidiabetic therapy that is associated with both immediate and delayed adverse clinical outcomes, as well as increased economic costs. Inpatients who develop hypoglycaemia are likely to experience a long duration of hospital stay and increased mortality. This Review describes the clinical presentation, precipitating causes, diagnosis and acute management of these diabetic emergencies, including a discussion of practical strategies for their prevention.
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Affiliation(s)
- Guillermo Umpierrez
- Division of Endocrinology and Metabolism, Emory University School of Medicine, 49 Jesse Hill Jr Drive, Atlanta, Georgia 30303, USA
| | - Mary Korytkowski
- Division of Endocrinology and Metabolism, University of Pittsburgh, 3601 Fifth Avenue, Suite 560, Pittsburgh, Pennsylvania 15213, USA
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Turksoy K, Paulino TML, Zaharieva DP, Yavelberg L, Jamnik V, Riddell MC, Cinar A. Classification of Physical Activity: Information to Artificial Pancreas Control Systems in Real Time. J Diabetes Sci Technol 2015; 9:1200-7. [PMID: 26443291 PMCID: PMC4667299 DOI: 10.1177/1932296815609369] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Physical activity has a wide range of effects on glucose concentrations in type 1 diabetes (T1D) depending on the type (ie, aerobic, anaerobic, mixed) and duration of activity performed. This variability in glucose responses to physical activity makes the development of artificial pancreas (AP) systems challenging. Automatic detection of exercise type and intensity, and its classification as aerobic or anaerobic would provide valuable information to AP control algorithms. This can be achieved by using a multivariable AP approach where biometric variables are measured and reported to the AP at high frequency. We developed a classification system that identifies, in real time, the exercise intensity and its reliance on aerobic or anaerobic metabolism and tested this approach using clinical data collected from 5 persons with T1D and 3 individuals without T1D in a controlled laboratory setting using a variety of common types of physical activity. The classifier had an average sensitivity of 98.7% for physiological data collected over a range of exercise modalities and intensities in these subjects. The classifier will be added as a new module to the integrated multivariable adaptive AP system to enable the detection of aerobic and anaerobic exercise for enhancing the accuracy of insulin infusion strategies during and after exercise.
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Affiliation(s)
- Kamuran Turksoy
- Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, IL, USA
| | | | - Dessi P Zaharieva
- School of Kinesiology and Health Science & Muscle Health Research Center, York University, Toronto, Ontario, Canada
| | - Loren Yavelberg
- School of Kinesiology and Health Science & Muscle Health Research Center, York University, Toronto, Ontario, Canada
| | - Veronica Jamnik
- School of Kinesiology and Health Science & Muscle Health Research Center, York University, Toronto, Ontario, Canada
| | - Michael C Riddell
- School of Kinesiology and Health Science & Muscle Health Research Center, York University, Toronto, Ontario, Canada
| | - Ali Cinar
- Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, IL, USA Department of Chemical and Biological Engineering, Illinois Institute of Technology, Chicago, IL, USA
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14
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Hoffman MD, Rogers IR, Joslin J, Asplund CA, Roberts WO, Levine BD. Managing collapsed or seriously ill participants of ultra-endurance events in remote environments. Sports Med 2015; 45:201-12. [PMID: 25326844 DOI: 10.1007/s40279-014-0270-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Increasing participation in ultramarathons and other ultra-endurance events amplifies the potential for serious medical issues during and immediately following these competitions. Since these events are often located in remote settings where access may be extremely limited; the diagnostic capabilities, treatment options, and expectations of medical care may differ from those of urban events. This work outlines a process for assessment and treatment of athletes presenting for medical attention in remote environments, with a focus on potentially serious conditions such as major trauma, acute coronary syndrome, exertional heat stroke, hypothermia, hypoglycemia, exercise-associated hyponatremic encephalopathy, severe dehydration, altitude illness, envenomation, anaphylaxis, and bronchospasm. A list of suggested medical supplies is provided and discussed. But, given that diagnostic and treatment options may be extremely limited in remote settings, it is important for medical providers to understand how to assess and manage the most common serious medical issues with limited resources, and to be prepared to make presumptive diagnoses when necessary.
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Affiliation(s)
- Martin D Hoffman
- Department of Physical Medicine and Rehabilitation, University of California Davis Medical Center, Sacramento, CA, USA,
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15
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Khodaee M, Riederer M, VanBaak K, Hill JC. Ultraendurance Athletes With Type 1 Diabetes: Leadville 100 Experience. Wilderness Environ Med 2015; 26:273-5. [DOI: 10.1016/j.wem.2014.10.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 10/07/2014] [Accepted: 10/08/2014] [Indexed: 12/16/2022]
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16
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Yardley JE, Zaharieva DP, Jarvis C, Riddell MC. The "ups" and "downs" of a bike race in people with type 1 diabetes: dramatic differences in strategies and blood glucose responses in the Paris-to-Ancaster Spring Classic. Can J Diabetes 2014; 39:105-10. [PMID: 25492557 DOI: 10.1016/j.jcjd.2014.09.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Revised: 08/05/2014] [Accepted: 09/09/2014] [Indexed: 01/24/2023]
Abstract
OBJECTIVE Recommendations for insulin adjustments and carbohydrate intake exist for individuals with type 1 diabetes who are undertaking moderate exercise. Very few guidelines exist for athletes with type 1 diabetes who are competing in events of higher intensity or longer duration. This observational study reports the strategies adopted by 6 habitually active men with type 1 diabetes (glycated hemoglobin = 8.3%±2.0%) undertaking a relatively intense endurance cycling event. METHODS Participants wore continuous glucose monitoring (CGM) sensors for 24 hours before competition, while racing and overnight postrace. They were asked to eat their regular meals and snacks and make their usual insulin adjustments before, during and after competition. All food intake and insulin adjustments were recorded in detail. RESULTS Participants used a variety of adjustments for exercise. Of 6 participants, 4 decreased their insulin dosages and all participants consumed carbohydrates during the race (mean = 87±57 g). In spite of these strategies, 3 of the 6 participants experienced mild to moderate hypoglycemia (not requiring assistance) during the event. Hyperglycemia was seen in all participants 3 hours postexercise. There were no incidents of nocturnal hypoglycemia. CONCLUSIONS Individuals with type 1 diabetes can compete in intensive long-distance athletic events using a variety of nutrition- and insulin-adjustment strategies. In addition to finely tuned insulin adjustments and increased carbohydrate intake, vigilance will always be required to maintain some semblance of glycemic control during events of extended duration.
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Affiliation(s)
- Jane E Yardley
- Manitoba Institute of Child Health, University of Manitoba, Winnipeg, Manitoba, Canada; University of Alberta, Augustana Campus, Camrose, Alberta, Canada.
| | - Dessi P Zaharieva
- School of Kinesiology and Health Science, York University, Toronto, Ontario, Canada
| | | | - Michael C Riddell
- School of Kinesiology and Health Science, York University, Toronto, Ontario, Canada
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17
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Abstract
Exercise has a beneficial effect on metabolic parameters affecting cardiovascular risk, such as lipids and blood glucose, and is a key component in both the prevention and the management of type 2 diabetes. Glycaemic control improves with both aerobic and resistance exercise in type 2 diabetes, but no glycaemic benefit is seen in type 1 diabetes. This probably results from glucose fluctuations commonly seen with exercise. Low and moderate intensity exercise are generally associated with a fall in blood glucose, and high intensity exercise can be associated with a rise in blood glucose. Trial evidence is suggestive of a reduction in cardiovascular risk with exercise, although evidence from prospective, randomised controlled trials is certainly not conclusive.
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Affiliation(s)
- Alistair Lumb
- Oxford Centre for Diabetes, Endocrinology and Metabolism (OCDEM), Churchill Hospital, Oxford, UK
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18
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Vlahek P, Car S, Ostroški I. Sweet 452 km--a report on the first type 1 diabetes patient to finish Double Ironman, a 30-hour endurance triathlon race. Croat Med J 2013; 54:306-7. [PMID: 23771764 PMCID: PMC3692341 DOI: 10.3325/cmj.2013.54.306] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Affiliation(s)
- Pavao Vlahek
- Special Rehabilitation Hospital Varazdinske Toplice, Varazdinske Toplice, Croatia.
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19
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Kalra S, Mukherjee JJ, Venkataraman S, Bantwal G, Shaikh S, Saboo B, Das AK, Ramachandran A. Hypoglycemia: The neglected complication. Indian J Endocrinol Metab 2013; 17:819-34. [PMID: 24083163 PMCID: PMC3784865 DOI: 10.4103/2230-8210.117219] [Citation(s) in RCA: 135] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Hypoglycemia is an important complication of glucose-lowering therapy in patients with diabetes mellitus. Attempts made at intensive glycemic control invariably increases the risk of hypoglycemia. A six-fold increase in deaths due to diabetes has been attributed to patients experiencing severe hypoglycemia in comparison to those not experiencing severe hypoglycemia Repeated episodes of hypoglycemia can lead to impairment of the counter-regulatory system with the potential for development of hypoglycemia unawareness. The short- and long-term complications of diabetes related hypoglycemia include precipitation of acute cerebrovascular disease, myocardial infarction, neurocognitive dysfunction, retinal cell death and loss of vision in addition to health-related quality of life issues pertaining to sleep, driving, employment, recreational activities involving exercise and travel. There is an urgent need to examine the clinical spectrum and burden of hypoglycemia so that adequate control measures can be implemented against this neglected life-threatening complication. Early recognition of hypoglycemia risk factors, self-monitoring of blood glucose, selection of appropriate treatment regimens with minimal or no risk of hypoglycemia and appropriate educational programs for healthcare professionals and patients with diabetes are the major ways forward to maintain good glycemic control, minimize the risk of hypoglycemia and thereby prevent long-term complications.
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Affiliation(s)
- Sanjay Kalra
- Bharti Research Institute of Diabetes and Endocrinology, Karnal, Haryana, India
| | - Jagat Jyoti Mukherjee
- Department of Endocrinology and Diabetes, Apollo Gleneagles Hospital, Kolkata, India
| | | | - Ganapathi Bantwal
- Department of Endocrinology, St. John's Medical College, Bangalore, India
| | - Shehla Shaikh
- Department of Endocrinology, Prince Aly Khan Hospital and Saifee Hospital, Mumbai, India
| | - Banshi Saboo
- Department of Diabetology, Dia Care Diabetes Care Centre, Ahmedabad, India
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20
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Tonoli C, Heyman E, Roelands B, Buyse L, Cheung SS, Berthoin S, Meeusen R. Effects of different types of acute and chronic (training) exercise on glycaemic control in type 1 diabetes mellitus: a meta-analysis. SPORTS MEDICINE (AUCKLAND, N.Z.) 2013. [PMID: 23134339 DOI: 10.2165/11635380-000000000-00000] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
OBJECTIVE Exercise has been accepted and generally recommended for the management of type 1 diabetes mellitus (T1D) and for improving the overall quality of life in affected individuals. This meta-analysis was conducted to determine the overall effects of exercise (acute bouts of exercise and chronic exercise [or training]) on acute and chronic glycaemic control in patients with T1D, the effects of different types of exercise on glycaemic control and which conditions are required to obtain these positive effects. METHODS PubMed, ISI Web of Knowledge and SPORTDiscus™ were consulted to identify studies on T1D and exercise. Cohen's d statistics were used for calculating mean effect sizes (ES) as follows: small d = 0.3, medium d = 0.5 and large d = 0.8. Ninety-five percent confidence intervals (95% CIs) were used to establish the significance of our findings. RESULTS From a total of 937 studies, 33 that met the inclusion criteria were selected. Nine studies were used to calculate the ES of a single bout of aerobic exercise; 13 studies to calculate the ES of aerobic training; 2 studies to calculate the ES of strength training; 4 studies to calculate the ES of combined (aerobic and strength) training and 6 studies to calculate the ES of high-intensity exercise (HIE) and training. ES for exercise on acute glycaemic control were large, while they were small for chronic glycaemic control. Aerobic exercise, resistance exercise, mixed exercise (aerobic combined with resistance training) and HIE acutely decreased blood glucose levels. To prevent late-onset hypoglycaemic episodes, the use of single bouts of sprints into an aerobic exercise can be recommended. This meta-analysis also showed that a regular exercise training programme has a significant effect on acute and chronic glycaemic control, although not all exercise forms showed significant results. Specifically, aerobic training is a favourable tool for decreasing chronic glycaemic control, while resistance training, mixed and HIE did not significantly improve chronic glycaemic control. Although, this meta-analysis showed there was a tendency for improvement in glycaemic control due to resistance training or resistance training combined with endurance training, there were not enough studies and/or subjects to confirm this statistically. CONCLUSIONS Based on this meta-analysis, we can conclude that the addition of brief bouts of high-intensity, sprint-type exercise to aerobic exercise can minimize the risk of sustaining a hypoglycaemic episode. We can also conclude that only regular aerobic training will improve the glycated haemoglobin level of a patient with T1D.
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Affiliation(s)
- Cajsa Tonoli
- Human Physiology and Sports Medicine, Faculty of Physical Education and Physical Therapy, Vrije Universiteit Brussel, Brussels, Belgium
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21
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Tonoli C, Heyman E, Roelands B, Buyse L, Cheung SS, Berthoin S, Meeusen R. Effects of different types of acute and chronic (training) exercise on glycaemic control in type 1 diabetes mellitus: a meta-analysis. Sports Med 2013; 42:1059-80. [PMID: 23134339 DOI: 10.1007/bf03262312] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
OBJECTIVE Exercise has been accepted and generally recommended for the management of type 1 diabetes mellitus (T1D) and for improving the overall quality of life in affected individuals. This meta-analysis was conducted to determine the overall effects of exercise (acute bouts of exercise and chronic exercise [or training]) on acute and chronic glycaemic control in patients with T1D, the effects of different types of exercise on glycaemic control and which conditions are required to obtain these positive effects. METHODS PubMed, ISI Web of Knowledge and SPORTDiscus™ were consulted to identify studies on T1D and exercise. Cohen's d statistics were used for calculating mean effect sizes (ES) as follows: small d = 0.3, medium d = 0.5 and large d = 0.8. Ninety-five percent confidence intervals (95% CIs) were used to establish the significance of our findings. RESULTS From a total of 937 studies, 33 that met the inclusion criteria were selected. Nine studies were used to calculate the ES of a single bout of aerobic exercise; 13 studies to calculate the ES of aerobic training; 2 studies to calculate the ES of strength training; 4 studies to calculate the ES of combined (aerobic and strength) training and 6 studies to calculate the ES of high-intensity exercise (HIE) and training. ES for exercise on acute glycaemic control were large, while they were small for chronic glycaemic control. Aerobic exercise, resistance exercise, mixed exercise (aerobic combined with resistance training) and HIE acutely decreased blood glucose levels. To prevent late-onset hypoglycaemic episodes, the use of single bouts of sprints into an aerobic exercise can be recommended. This meta-analysis also showed that a regular exercise training programme has a significant effect on acute and chronic glycaemic control, although not all exercise forms showed significant results. Specifically, aerobic training is a favourable tool for decreasing chronic glycaemic control, while resistance training, mixed and HIE did not significantly improve chronic glycaemic control. Although, this meta-analysis showed there was a tendency for improvement in glycaemic control due to resistance training or resistance training combined with endurance training, there were not enough studies and/or subjects to confirm this statistically. CONCLUSIONS Based on this meta-analysis, we can conclude that the addition of brief bouts of high-intensity, sprint-type exercise to aerobic exercise can minimize the risk of sustaining a hypoglycaemic episode. We can also conclude that only regular aerobic training will improve the glycated haemoglobin level of a patient with T1D.
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Affiliation(s)
- Cajsa Tonoli
- Human Physiology and Sports Medicine, Faculty of Physical Education and Physical Therapy, Vrije Universiteit Brussel, Brussels, Belgium
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Azzopardi N, Chetcuti S, Sant J, Pocock J. Acute Liver Impairment in a Young, Healthy Athlete: Hypoxic Hepatitis and Rhabdomyolysis following Heat Stroke. Case Rep Gastroenterol 2012; 6:563-8. [PMID: 23012616 PMCID: PMC3457030 DOI: 10.1159/000338838] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Any process that substantially diminishes arterial blood flow or arterial oxygen content to the liver can result in hypoxic (ischaemic) hepatitis. 90% of hypoxic hepatitis occurs in unstable patients in intensive care units with haemodynamic failure secondary to heart failure, respiratory failure and toxic shock. The rate of in-hospital mortality in hypoxic hepatitis is very high with studies recording mortalities of 61.5%. It tends to be very uncommon in healthy, young patients with no underlying medical problems. We report here the case of a young healthy athlete who developed heat stroke associated with rhabdomyolysis and hypoxic hepatitis while he was running the final stages of a marathon. The patient required intensive care admission and inotropic support for a few hours after he was admitted with heat stroke. He underwent a rapid recovery after he was resuscitated with fluids. N-acetyl cysteine was also given during the acute stage of the hepatitis. This case highlights an uncommon case of hypoxic hepatitis in a young, healthy patient secondary to hypotension and heat stroke. Inotropic support might have precipitated the hypoxic hepatitis in this young patient.
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23
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Witsch J, Neugebauer H, Flechsenhar J, Jüttler E. Hypoglycemic encephalopathy: a case series and literature review on outcome determination. J Neurol 2012; 259:2172-81. [PMID: 22491856 DOI: 10.1007/s00415-012-6480-z] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2011] [Revised: 02/19/2012] [Accepted: 03/12/2012] [Indexed: 12/16/2022]
Abstract
Data on clinical long-term outcome after the acute phase of hypoglycemic encephalopathy (HE) using validated outcome scales is currently unavailable. Here we report the results of a systematic literature search for studies on HE and data on long-term outcome in patients with HE admitted to three Charité hospitals between January 2005 and July 2010. HE was defined as coma/stupor and blood glucose levels <50 mg/dl on admission, persistence of coma/stupor for ≥24 h despite normalization of blood glucose levels, and exclusion of any other cause of coma/stupor. Outcome was assessed using the modified Rankin scale (mRS), Glasgow Outcome Scale (GOS), and Barthel index (BI). Fifteen patients were included, with a mean age of 60 years (range 29-79). Two were lost to follow-up. Of the remaining 13 patients, six had died (46 %). In the seven survivors, the median mRS score was 0 (range 0-5), median GOS score was 5 (range 2-5), and median BI was 100 (range 0-100). MRIs made in the acute phase were available for three patients and revealed no obvious relation between lesion size or pattern and clinical outcome. To our knowledge, this is the first case series using validated clinical scoring systems to determine clinical long-term outcome after HE. The results suggest that mortality is high, but long-term survival with little or no disability is possible and can be observed in the majority of survivors. Risk of death or poor outcome does not seem to be related to MRI features in the acute phase but rather to other presumably medical factors.
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Affiliation(s)
- Jens Witsch
- Department of Neurology, Charité Campus Virchow Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany.
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24
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Riddell MC, Milliken J. Preventing exercise-induced hypoglycemia in type 1 diabetes using real-time continuous glucose monitoring and a new carbohydrate intake algorithm: an observational field study. Diabetes Technol Ther 2011; 13:819-25. [PMID: 21599515 DOI: 10.1089/dia.2011.0052] [Citation(s) in RCA: 101] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND Real-time (RT) continuous glucose monitoring (CGM) offers the possibility to better manage glucose levels during exercise in active individuals with type 1 diabetes mellitus (T1DM). However, studies have yet to determine the appropriate actions to take when glucose levels are trending toward hypoglycemia. The purpose of this observational field study was to test the effectiveness of RT-GCM and a new carbohydrate intake algorithm designed for maintaining euglycemia during sports. METHODS During a 2-week sports camp, 25 adolescents (8-17 years old) with T1DM were fitted with a RT-CGM device and instructed to ingest fast-acting carbohydrates (8-20 g, depending on the concentration of glucose at the time of RT-CGM alert and rates of change in glycemia) when glucose levels were trending toward hypoglycemia. Rates of change in glucose were measured before and after algorithm use, and the incidence of hypoglycemia was documented. RESULTS With RT-CGM and algorithm use, euglycemia was largely maintained with modest amounts of carbohydrate intake, even when glucose levels were initially dropping at an elevated rate (>0.55 mmol/L per 5 min). Mild biochemical hypoglycemia (3.0-3.9 mmol/L) occurred just twice out of 22 uses of the algorithm (9%) when trend arrows alerted the subjects that glucose levels were dropping. When glucose levels were already below target (<5.0 mmol/L), mild hypoglycemia occurred five times out of 13 events (38%), despite 16 g of carbohydrate being ingested. Average glucose levels during sports in the 60 min following algorithm use were 5.8 ± 1.2 mmol/L, 5.3 ± 1.0 mmol/L, and 6.2 ± 0.8 mmol/L in the 20-, 16-, and 8-g carbohydrate intake protocols when glucose levels were initially on target but dropping toward hypoglycemia. CONCLUSION When coupled with RT-CGM, a new carbohydrate intake algorithm prevents hypoglycemia and maintains euglycemia during exercise, particularly if patients ingest carbohydrate when trend arrows alert them of a drop in glycemia.
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Affiliation(s)
- Michael C Riddell
- School of Kinesiology and Health Science, Muscle Health Research Centre, Physical Activity and Diabetes Unit, York University, Toronto, Ontario, Canada.
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25
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Non-traumatic rhabdomyolysis and diabetes. DIABETES & METABOLISM 2011; 37:262-4. [PMID: 21550832 DOI: 10.1016/j.diabet.2011.03.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2010] [Revised: 03/09/2011] [Accepted: 03/11/2011] [Indexed: 01/22/2023]
Abstract
The present clinical report describes the case of a spontaneously resolving rhabdomyolysis episode in a type 1 diabetic patient, who presented with multiple risk factors of this muscle complication, including uncontrolled brittle diabetes with sequences of hyper- and hypoglycaemic episodes in the same day, caloric restriction and intensive exercise. It should be borne in mind that rhabdomyolysis is not particularly rare in diabetes and can be severe. To raise clinicians' awareness of a possible rhabdomyolysis diagnosis, the various clinical conditions that are likely to lead to this complication in diabetic patients are also reviewed here.
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