(1.School of Physical Education,Sichuan Normal University,Chengdu 610066,China;2.Rehabilitation Center,Sichuan Sports Skills Institute,Chengdu 610041,China) Abstract: In order to probe into the effects of whole-body vibration training (WBVT) at the same amplitude (3mm) but at different frequencies on the body posture control ability of elderly women, the authors divided 63 healthy elderly women aged 60-70 randomly into a low frequency group (n=15, 10-15 Hz), a mid frequency group (n=16, 25-30 Hz) , a high fre-quency group (n=15, 40-45 Hz), and a control group (n=17), in which the age, height and weight match The authors let the vibration groups carry out 24-week WBVT on the Power-Plate vibration platform made in USA, and tested the balance, lower limb muscle strength and lower limb proprioception of all the testees on week 0 and week 24, and revealed the fol-lowing findings: 1) balance: low frequency WBVT significantly improved the ontic compensation ability of the elderly testees, mid frequency and high frequency WBVT significantly improved the ontic compensation ability, vestibular inte-gration ability as well as left and right dynamic balance of the testees, and high frequency WBVT’s improvement effect was better than low frequency and mid frequency WBVT’s; 2) lower limb muscle strength: low frequency WBVT signifi-cantly improved the absolute power of knee joint extensor of the elderly testees, mid frequency and high frequency WBVT significantly improved the absolute power and explosive power of knee and ankle joint extensors; high frequency WBVT’s effect of improving the absolute power of knee joint extensor was better than low frequency and mid frequency WBVT’s, its effect of improving the explosive power of knee joint extensor, and the absolute power and explosive power of ankle joint extensor, was better than low frequency WBVT’s; mid frequency WBVT ‘s effect of improving the explosive power of knee and ankle joint extensors was better than low frequency WBVT ‘s; 3) lower limb movement sense: low frequency WBVT significantly improved the 30° and 60° position sense of knee joint of the elder testees, mid frequency and high frequency WBVT significantly improved the 30° and 60° position sense of knee joint and the 45° position sense of ankle joint, and high frequency WBVT’s effect of improving the 30° and 60° position sense of knee joint was better than low frequency and mid frequency WBVT’s. Key words: sports medicine;whole body vibration training;body posture control;balance;muscle strength;position sense;elderly women |