Abstract
Purpose
Physical exercise is necessary in the handling DM, but it is not distinct which kind of physical exercise can improve cardiac autonomic modulation in T2DM. The purpose of this study was to compare the effects of three different modalities of exercise (aerobic, resistant, and combined) on cardiac autonomic modulation as measured by HRV in patients with type 2 diabetic neuropathy.
Methods
The participants were 45 men (age: 55.24 ± 8.11 years, weight: 89.5 ± 13.4 kg, height: 171.85 ± 6.98 cm, duration of diabetes: 12.51 ± 6.46 years) with type 2 diabetic neuropathy who were clinically free from signs and symptoms of cardiovascular disease. Participants were randomly assigned to one of four groups: aerobic-training (n = 11), dynamic resistant-training (n = 11), Combined-training (n = 11), or a non-exercise control group (n = 12). The exercise groups performed aerobic and resistant exercise for 25–45 min per day, 3–5 times per week for 12 weeks. Anthropometrics, biochemical markers (FBS, HbA1c, Lipid Profile, and Insulin), and heart rate variability in the exercise laboratory and under ambulatory conditions by 3-channel ECG digital Holter recorder were examined.
Results
All time and frequency-domain HRV parameters (except LF power) were significantly improved in the exercise groups, compared with the control group (p < 0.05). SDNN, rMSSD, and HF power were boosted, LF power was not different, and the LF/HF ratio decreased after versus before exercise training, independent of exercise modality. HbA1c in aerobic and resistant-training groups, and insulin and LDL in the resistant-training group were decreased after exercise training (p < 0.05).
Conclusions
Exercise training, independent of modality, in patients with type 2 diabetic neuropathy who were clinically free of the cardiovascular disease cause to significant progress in cardiovascular autonomic function assessed by HRV via enhancing cardio-vagal and reducing cardio-sympathetic tone.
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Data are all contained within the article.
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Acknowledgements
We are grateful to the University of Mohaghegh Ardabili and the University of Tabriz, for their laboratory equipment, exercise facilities, and technical support. We thank the patients and trainers for their participation in this study.
Funding
The funds for this study were provided three quarters by Dr. Elaheh Piralaiyand a quarter by University of Mohaghegh Ardabili. These funds were used to purchase the necessary supplies.
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EP, MS, SDN, and LSP were involved in study design. EP, MS, MK, and SDN were involved in data collection. MS and SDN were responsible for cleaning and running statistical analysis. EP, MS, SDN, LSP, MS and MK were responsible for interpretation of results. EP was responsible for writing the first draft. All authors contributed equally to editing draft versions and accept full responsibility for the content of the manuscript.
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This study was approved by the research ethics committee (REC) of Tabriz University of Medical Sciences (TUOMS) (IR.TBZMED.REC.1395.754).
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Piralaiy, E., Siahkuhian, M., Nikookheslat, S.D. et al. Cardiac Autonomic Modulation in Response to Three Types of Exercise in Patients with Type 2 Diabetic Neuropathy. J Diabetes Metab Disord 20, 1469–1478 (2021). https://doi.org/10.1007/s40200-021-00889-x
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DOI: https://doi.org/10.1007/s40200-021-00889-x