PMID- 29793518 OWN - NLM STAT- MEDLINE DCOM- 20190314 LR - 20220408 IS - 1745-6215 (Electronic) IS - 1745-6215 (Linking) VI - 19 IP - 1 DP - 2018 May 24 TI - A dose-response study of aerobic training for oxygen uptake, oxidative stress and cardiac autonomic function in type 2 diabetes mellitus: study protocol for a randomized controlled trial. PG - 289 LID - 10.1186/s13063-018-2671-y [doi] LID - 289 AB - BACKGROUND: Cardiac autonomic neuropathy is a commonly overlooked complication of type 2 diabetes mellitus (T2DM) characterized by an imbalance between sympathetic and parasympathetic supply to the heart, which contributes to cardiovascular morbidity and mortality. T2DM has also been shown to negatively influence oxygen kinetics and increase oxidative stress, which may be linked to the development of various chronic complications. Aerobic training has been reported to improve oxygen uptake, antioxidant defense, and cardiac autonomic function in T2DM; however, the effects of varying doses of exercise on these variables are not known. Therefore, the aim of the present study is to explore the effects of manipulating training variables (volume and intensity) on the regulation of oxygen uptake response, oxidative stress, and cardiac autonomic function in patients with T2DM. METHODS: We will recruit 60 patients with T2DM, who will be randomly allocated into one of the three aerobic training groups: low-intensity, low-volume training; low-intensity, high volume-training; high-intensity, high-volume training; or to the control group receiving no supervised exercise. All participants will be assessed for the rate of oxygen uptake, levels of antioxidant enzymes and cardiac autonomic function at baseline and after 12 weeks of training. Secondary outcome measures will include cardiometabolic risk factors and body composition. DISCUSSION: Despite a large body of evidence on the efficacy of aerobic training in the prevention and treatment of T2DM, there is no unequivocal exercise prescription for the same. Oxygen kinetics and oxidative stress are highly sensitive to the magnitude of physical activity. It would therefore, be interesting to study their interaction with chronic exposure to various doses of exercises and explore the optimal volume and intensity to bring about improvements in these parameters. TRIAL REGISTRATION: Clinical Trials Registry - India, CTRI2017/08/009459 . Registered on 23 August 2017. Retrospectively registered. FAU - Verma, Shalini AU - Verma S AD - Centre for Physiotherapy and Rehabilitation Sciences, Jamia Millia Islamia (Central University), New Delhi, 110025, India. FAU - Moiz, Jamal Ali AU - Moiz JA AD - Centre for Physiotherapy and Rehabilitation Sciences, Jamia Millia Islamia (Central University), New Delhi, 110025, India. FAU - Anwer, Shahnawaz AU - Anwer S AD - Department of Rehabilitation, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia. FAU - Alghadir, Ahmad H AU - Alghadir AH AD - Department of Rehabilitation, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia. FAU - Hussain, Mohammed Ejaz AU - Hussain ME AD - Centre for Physiotherapy and Rehabilitation Sciences, Jamia Millia Islamia (Central University), New Delhi, 110025, India. ehusainjmi@gmail.com. LA - eng PT - Clinical Trial Protocol PT - Journal Article DEP - 20180524 PL - England TA - Trials JT - Trials JID - 101263253 RN - 0 (Biomarkers) SB - IM MH - Adult MH - Aged MH - Autonomic Nervous System/*physiopathology MH - Biomarkers/blood MH - Cardiorespiratory Fitness MH - Diabetes Mellitus, Type 2/blood/diagnosis/physiopathology/*therapy MH - Diabetic Neuropathies/blood/diagnosis/physiopathology/*therapy MH - Exercise Therapy/*methods MH - Exercise Tolerance MH - Female MH - Heart/*innervation MH - Heart Rate MH - Humans MH - India MH - Male MH - Middle Aged MH - *Muscle Contraction MH - Muscle, Skeletal/metabolism/*physiopathology MH - *Oxidative Stress MH - *Oxygen Consumption MH - Randomized Controlled Trials as Topic MH - Recovery of Function MH - Single-Blind Method MH - Time Factors MH - Treatment Outcome PMC - PMC5968520 OTO - NOTNLM OT - Aerobic training OT - Cardiopulmonary fitness OT - Diabetes OT - Heart rate variability OT - Metabolic control OT - Oxygen uptake COIS- ETHICS APPROVAL AND CONSENT TO PARTICIPATE: All of the participating patients will receive verbal information and a written information sheet and will be able to ask the investigators and study staff questions about the study. They will voluntarily sign a consent form before starting the trial (Additional file 2). COMPETING INTERESTS: The authors declare that they have no competing interests. PUBLISHER'S NOTE: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. EDAT- 2018/05/26 06:00 MHDA- 2019/03/15 06:00 PMCR- 2018/05/24 CRDT- 2018/05/26 06:00 PHST- 2018/02/05 00:00 [received] PHST- 2018/05/04 00:00 [accepted] PHST- 2018/05/26 06:00 [entrez] PHST- 2018/05/26 06:00 [pubmed] PHST- 2019/03/15 06:00 [medline] PHST- 2018/05/24 00:00 [pmc-release] AID - 10.1186/s13063-018-2671-y [pii] AID - 2671 [pii] AID - 10.1186/s13063-018-2671-y [doi] PST - epublish SO - Trials. 2018 May 24;19(1):289. doi: 10.1186/s13063-018-2671-y.