n South African Journal of Sports Medicine - Whole body vibration improves body mass, flexibility and strength in previously sedentary adults : original research

Volume 24, Issue 2
  • ISSN : 1015-5163
  • E-ISSN: 2078-516X



This study aimed to determine the effectiveness of whole body vibration (WBV) training for promoting health-related physical fitness in sedentary adults.

A non-randomised sampling technique was used with an equivalent match-pair comparison group, pre- and post-test design. Volunteers were gathered through a combination of accidental and snowball sampling and divided into either the experimental (=32) or control group (=30). Dependent variables included body mass, hamstring flexibility as measured by the sit-and-reach test, upper-body strength as measured by a grip strength dynamometer, abdominal and upper-body muscular endurance as measured by 1-minute timed sit-up and push-up tests, respectively. The standardised YMCA fitness battery was used as the evaluation protocol. The WBV experimental group participated in a progressive 3 times/week training programme for a maximum duration of 30 minutes/session for 12 consecutive weeks. The control group remained sedentary.
Significant improvements in all five of the selected dependent parameters were measured.
WBV training 3 times weekly for 30 minutes/session provides an effective method of exercise intervention for health promotion in sedentary adults over a 12-week period.

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