Acute effects of whole body vibration and weighted vest on muscle strength and balance in elderly
Srisaphonphusitti, L.; Manimmanakorn, Nuttaset; Manimmanakorn, Apiwan; Panyaek, N.; Hamlin, Michael J.
This study aimed to investigate the physiological consequence of an acute bout of whole body vibration (WBV) combined with wearing a weighted vest ( WBV+ WV) compared to WBV or WV alone. Fifty-two elderly volunteers (65.2 ± 3.7 years, mean ± standard deviation (SD)) were randomly allocated into 3 groups: WBV (n =17, 10 sets of 1 minutes squat exercises interspersed with 60 s rest on a vibration platform with a frequency of 30 Hz and amplitude 2 mm) , WV ( n= 16, the same squat exercises with an additional 10% of bodyweight loaded into a weighted vest) and WBV+WV (n= 19, combination of both regimes). Heart rate was monitored at baseline, during and 15 minutes post-exercise, while muscle strength, balance, and functional mobility were measured before and 15 minutes post-exercise. Heart rate increased significantly with acute exercise but was not different between groups throughout the experiment. Compared to pre-exercise, WBV improved muscle strength (11% ± 5.6%, mean ± 95% CI, p-Value < 0.01), single leg stance test (43.5% ± 22.1%, p-Value < 0.01), and timed up and go test ( 5. 3% ± 2. 7% , p-Value < 0.01) 15 minutes post-exercise, while the WV exercise showed improvement only in timed up and go test (3.9% ± 1.3% , p-Value < 0.01). Compared to pre-exercise, combining WBV+WV increased single leg stance test (40.8% ± 37.7% , p-Value = 0.01) and timed up and go test (3.9% ±1.3%, p-Value < 0.01) post-exercise. Since WBV had an acute improvement on all outcomes, it may be useful as a warm-up activity for older adults.... [Show full abstract]
Fields of Research420702 Exercise physiology; 420301 Aged health care; 420605 Preventative health care
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