Deniz ŞİMŞEK, İZZET KIRKAYA, A. Ruhi SOYLU, Olgun UGURLU, ALİ ONUR CERRAH, HAYRİ ERTAN

TÜM VÜCUT VİBRASYON UYARANLARINA MERKEZİ KONTROL SİSTEMİ NASIL ADAPTE OLUR

Araştırmanın amacı yüksek ve düşük frekanslı akut tüm vücut vibrasyon [TVV] uyaranlarının postural kontrol yetenekleri üzerine olan ektilerinin incelenmesidir. Anadolu Üniversitesi Spor Bilimleri Fakültesinde öğrenci olan 16 erkek çalışmaya gönüllü olarak katılmıştır. TBV uyarıları şu parametreler izlenerek uygulanmıştır: (1) frekans: 30 ve 40 Hz: (2) duruş: statik squat pozisyonu:(3)genlik: 4mm: (4) diz fleksiyon açısı: 120o: süresi: 60sn. Medio-lateral yer reaksiyon kuvvetİ (MLYRK) ve anterio-posterior yer reaksiyon kuvvetİ (APYRK) kuvvet platformu ile ölçüldü. 4mm genlikte düşük ve yüksek frekanslı TVV uyaranları farklı postural adaptasyonlarla sonuçlanmıştır (p

HOW THE CENTRAL CONTROL SYSTEM ADAPTS TO ACUTE WHOLE-BODY VIBRATION STIMULUS

This study investigated the effects of high- and low-frequency acute whole-body vibration (WBV) on postural control ability. Sixteen male students from the Faculty of Sport Science voluntarily participated in this study. [Methods] WBV stimuli were applied using the following parameters: (1) frequency: 30 or 40 Hz; (2) stance: static squat position; (3) amplitude: 4 mm; (4) knee flexion angle: 120°; and duration: 60 s. The medio-lateral ground reaction force (MLGRF) and anterio-posterior ground reaction force (APGRF) were measured on a force platform. The results showed that static WBV stimulation at 4 mm in amplitude at low and high frequencies resulted in different postural adaptations (p<0.05). The APGRF and MLGRF were higher at 30 Hz than at 40 Hz, and a rapid exponential decline in the post-vibration values was observed within the first 10 seconds of stimulation at 30 Hz or 40 Hz at 4 mm. After the initial 10 seconds, these forces were maintained until the end of the 60-second stimulation period. The present findings support that somatosensory stimulation at 30 Hz and 4 mm induced long-term effects on the control of postural sway. Alternatively, somatosensory stimulation more rapidly adapted to the vibration at 40 Hz and 4 mm. It may be concluded that WBV at 40 Hz and 4 mm can rapidly provide beneficial effects to the elderly, for whom postural control is very important, for the treatment of chronic conditions such as Parkinson's disease, osteoporosis, and post-menopausal conditions or for the enhancement of athletic performance.

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