摺疊自行車振幅對頸部之影響

本研究目的在了解當小摺車騎乘於不同減速路面時的衝擊大小對人體的影響。測量方法主要利用LabVIEW程式儀控系統操作，將加速規放置自行車前叉、人體第七節頸椎（C7）測其加速度與合加速度。實驗主要儀器為LabVIEW儀控系統，加速規2組（Biopac TSD 109F 50G）、紅外線光閘1組（型號為E3Z-T61）、無線NI類比數位轉換盒（WLS-9163）及NI類比數位轉換盒（USB-6211）；以10名具騎乘經驗的大專生為實驗參與者，每人進行50公尺橫越不同障礙路面並騎乘三次，以收取最大的加速度值為採樣依據。實驗場地為50公尺，在障礙路面前1公尺處設置紅外線光閘1組以獲取實驗參與者通過減速路面的時間與速度參數，透過無線NI類比數位轉換盒傳送至LabVIEW　儀控系統。以相依樣本T考驗進行統計檢定，顯著水準α=.05。結果：前叉方面：加速規的衝擊指數有顯著差異，因為欠缺避震器的減震功能，衝擊指數明顯。C7Y軸與C7合加速度方面：主要原因是因為人體遭遇衝擊時，受試者用手臂力量支撐上半身，以抵抗衝擊，達到減震的功效。結論：前叉方面加速規的衝擊指數有顯著差異，達到．05顯著水準。因為欠缺避震器的減震功能，衝擊指數隨之而高。C7Y軸與C7合加速度方面衝擊指數沒有顯著差異，主要原因是因為人體遭遇衝擊時，受試者會用手臂力量支撐上半身，以抵　抗衝擊，達到減震的功效。

關鍵字

折疊式自行車；減速路面；衝擊

並列摘要

This study is to understand the influence of the impact to human body when riding folding bike on different deceleration road. The measuring Methods: by LabVIEW Object-Oriented Programming, putting the accelerometer on the front fork and the seventh cervical vertebra (C7) to test the acceleration and total acceleration. The main instruments for the experiment were LabVIEW Object-Oriented Programming, 2 sets of the accelerometer (Biopac TSD 109F 50G), 1 RTFS contained infrared shutter (E3Z-T61), Ni WIFI analog-digital set-top box (WLS-9163), and NI analog-digital set-top box (USB-6211). 10 college students with riding experiences were the participants. Each of them rode across 50 meters of different obstacle 3 times to collect the biggest acceleration as the sample. The experiment field was 50 meters with one RTFS contained infrared shutter set up at 1 meter before the obstacle road to acquire the passing time and speed parameters, which was transmitted to LabVIEW Object-Oriented Programming through NI WIFI analog-digital set-top box. A statistic test was performed with dependent sample T-test, the prominent standardα=.05. The Results: front fork- the impact index of the accelerometer has prominent differences. The impact index was obvious because there was no cushion for damping. C7Y axis and C7 total acceleration- when human body encounter impact, the test respondents support the upper body with the arms to resist the impact and further damping. The Conclusions: front fork- the impact index of the accelerometer had prominent differences, reaching .05 standard. As there was no cushion for damping, the impact index was high. C7Y axis and C7 total acceleration-there had no obvious differences in impact index. The main reason was that the test respondents would support the upper body with the arm strength to resist the impact and feather damping.

並列關鍵字

Deceleration pavement ； Impact ； Folding bicycle

參考文獻

Seidel, H.,Heide, R.(1986).Long-term effects of whole-body vibration: A critical survey of the literature.International Archive of Occupational and Environment Health.58,1-26.