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Whole-body vibration training improves heart rate variability and body fat percentage in obese Hispanic postmenopausal women
Severino G, Sanchez-Gonzalez M, Walters-Edwards M, Nordvall M, Chernykh O, Adames J, Wong A
Journal of Aging and Physical Activity 2017 Jul;25(3):395-401
clinical trial
4/10 [Eligibility criteria: No; Random allocation: Yes; Concealed allocation: No; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: No; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

The present study examined the effects of a 6-week whole-body vibration training (WBVT) regimen on heart rate variability (HRV) and body composition in obese Hispanic postmenopausal women. Participants were randomly assigned to either WBVT (n = 13) or a nonexercising control group (n = 14). HRV and body composition were measured before and after 6 weeks. There was a significant group by time interaction (p < 0.05) for heart rate, sympathovagal balance, and body fat percentage (BF%) such that all significantly decreased (p < 0.05); and R-R intervals significantly increased (p < 0.05) following WBVT compared to no changes after control. The changes in sympathovagal balance were correlated with changes in BF% (r = 0.63, p < 0.05). Our findings indicate that WBVT improves HRV and BF% in obese Hispanic postmenopausal women. The improvement in BF% partially explained the decrease in sympathovagal balance. Since obese and older individuals are at increased risk of developing cardiovascular diseases, they could potentially benefit from WBVT.

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