- 期刊
不同下坡坡度對跑步機上人體跑步動作之分析
Analysis of Running on Treadmill with Different Downhill Slops
摘要
本研究之主要目的在於探討不同下坡坡度，對在跑步機跑時人體動作之生物力學變化與影響。受試者為體育系學生男女各6位，男生平均年齡為19.3±0.8歲，平均身高為173.5±5.2公分，平均體重為66.3±5.2公斤；女生平均年齡為19.3±0.5歲，身高為162.8±4.9公分，體重為58.8±7.1公分。主要研究儀器為JVC DV-9800數位攝影機、Quinton牌電動跑步機及APAS動作分析系統。跑步機以平地水平擺置（水平0度）、尾端墊高與水平面成8度、及尾端墊高與水平面成15度等三個坡度，令受試者分別在此三種下坡度上進行跑步。在每種坡度上，受試者在跑步機上適應熱身1分鐘後進行每秒2.2公尺的速度下跑步1分鐘，並由JVC DV-9800數位攝影機全程錄影。受試者在跑步機上之動作影片，經由APAS動作分析系統處理後，再經由SPSS R12之視窗版統計軟體進行統計之計算處理後，所得的結果為：人體在進行下坡跑步時，軀幹之角度會隨下坡坡度之增加，軀幹與地面之角度變化會減少；人體在進行下坡跑步時，下肢之角度會隨下坡坡度之增加，大腿和小腿與地面之角度變化亦同樣會減少；在不同前傾坡度跑步機上跑時，身體重心垂直振幅會隨著跑步機前傾坡度增加而減少；跑步機前傾8 度時身體重心振幅之位能變化為跑步機水平時平均的0.82倍；跑步機前傾15度時身體重心振幅之位能變化為跑步機水平時平均的0.75倍。因此，本研究得到明確之結論為下坡坡度之增加，可減少身體之位能而節省體力能量之消耗。
並列摘要
The purpose of this study was to analyze the running biomechanics with different downhill slops. Subjects were 12 collegiate athletes those who's age were19.3±0.65. years, height were 168.2±7.37 cm, weight were 62.6±7.12 kg. The major equipments included JVC DV-9800 digital camera and Quintum treadmill and Ariel Performance Analysis System motion system. The treadmill was placed zero degree, 8 degrees, and 15 degrees downhill arrangement, and subjects were tested on this environment with the 2.2 m/s treadmill speed. The all test procedures were recorded by JVC digital camera. After tape trimming and digitizing, the one factor repeated ANOVA statistics was used for data treatment which the SPSS R.12 was the software package. The findings and results were reached that the change of vertical trunk degree decreased when the downhill degree increased on a treadmill, the change of vertical thigh degree decreased when the downhill degree increased on a treadmill, the change of vertical leg degree increased when the downhill degree increased on a treadmill, the change of height of center of body gravity decreased when the downhill degree increased on a treadmill, and the potential energy of body decreased when the downhill degree increased on a treadmill. Therefore, it was concluded that increasing the degree of downhill slops could minimize the body movement, and could reduce the expenditure of body energy.