Abstract
The aim of this study was to analyze the effects of an 8-week whole-body vibration (WBV) on the quality of life, physical fitness, body composition, glycosylate hemoglobin (HbA1c), lipid profile, and foot health status in people with type II diabetes mellitus (T2DM). It was performed as a double-blinded randomized controlled trial of 90 people with T2DM. Primary care facilities were used. The 8-week WBV training consisted of maintaining a knee flexion at 45° during five to nine series of 30–60 s in a vibration frequency that oscillated between 12.5–18.5 and 30 s of recovery between series. The placebo group had to perform the same protocol but without vibration. Participants performed the protocol three times per week. The WBV training significantly reduced the fat mass (%) of people with T2DM. However, significant effects of WBV training were not found in the quality of life, physical fitness, foot health status, lipid profile, blood pressure, fasting blood glucose, or HbA1c. Nevertheless, within groups enhances were found in HbA1c, blood pressure, fasting blood glucose, foot health status, health-related quality of life, timed-up and go test, and chair-stand test in both WBV and placebo groups. WBV was shown to be beneficial for reducing the fat mass and lipid profile of people with T2DM. The improvements of the placebo group could be due to both the social benefits of enrolling in an intervention and the physical fitness benefits of isometric contractions. Further studies are needed to clarify the effects of WBV and to establish a dose–response relationship in people with T2DM.
Highlights
Diabetes Mellitus (DM) is defined as a state of hyperglycemia, in either fasting or postprandial states (1)
Mann-Whitney U test was employed to study the differences at baseline in the physical function, self-perceived health foot status, HbA1c, fasting blood glucose or body composition variables among others
Our study showed that 8 weeks of whole-body vibration (WBV) training had a significant effect on the body composition, reducing the fat mass of people with Type 2 diabetes mellitus (T2DM)
Summary
Diabetes Mellitus (DM) is defined as a state of hyperglycemia, in either fasting or postprandial states (1). Exercises based on whole-body vibration (WBV) training have shown to enhance balance, mobility muscle strength, pain, cardiorespiratory fitness, and bone density, in both healthy and clinical populations [18,19,20,21,22,23] In this regard, a recent systematic review and meta-analysis (with a total of seven studies, involving 279 older adults with T2DM) focused on the effects of WBV determined that this training improved the mobility, balance and aerobic capacity without any known adverse effects [24]. The aim of the present study was to investigate the effects of 8 weeks of WBV training on the body composition, lipid profile, glycosylated haemoglobin (HbA1c), fasting blood glucose, physical fitness, and health-related quality of life
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