臺灣博碩士論文加值系統

目的：三軸加速規與半蹲運動強度的相關性，並比較不同半蹲速度與不同位置加速規訊號的預測能力。本研究招募11名健康男性，配戴兩個加速規於左手腕及腰椎，雙手插腰，雙腳與肩同寬站在測力板上，隨機進行七種速度的半蹲運動，利用節拍器控制下蹲與上升的動作時間(秒)，速度為1下1上、1下2上、1下3上、2下1上、2下2上、3下1上及自身最快下蹲與上升的速度(最快速度)，每種速度各完成15次半蹲運動，間隔休息3分鐘。利用皮爾遜積差相關計算半蹲過程中加速規與力板訊號的相關係數(r)及決定係數(R2)，以二因子重複量數比較在不同半蹲速度與不同位置的決定係數之差異。結果：加速規與力板訊號成顯著高度正相關，r值介於0.86~0.96。不同速度及位置間對決定係數無交互作用，但速度間及位置間各有顯著差異，最快速度的R2顯著大於1下3上、2下2上、3下1上；2下2上的R2顯著小於其他速度；1下3上顯著小於1下1上、1下2上、2下1上。另外，腰椎的R2顯著大於手腕處。結論：加速規可量化不同半蹲動作速度之運動強度，可適合運用預測較快速度之半蹲運動強度，且擺置在腰部的預測準確性更優。

The purpose of this study was to investigate the correlation between accelerometers (ACC) and force plate signals, as well compare the determination of correlation among different squatting velocities and accelerometer placements. Eleven healthy young men were recruited. Two ACC were worn on participant’s lumbar and wrist of left hand. They were asked to hold hands the waist and stand on the force plate by both feet separated to shoulder-width. And then they execute half squat exercises randomly with seven cadences using metronome to control the downwards (D) and upwards (U) phases of squat. Those squat cadences were respectively referring as 1-second D and 1-second U, (1D1U), 1-second D and 2-second U (1D2U), 1-second D and 3-second U (1D3U), 2-second D and 1-second U (2D1U), 2-second D and 2-second U (2D2U), 3-second D and 1-second U (3D1U), and as fast as possible by individual subject (FAST). As above, each speed pattern made complete 15 repetitions and with 3-minutes rest between speeds. Pearson product-moment correlation coefficient (r) and coefficient of determination (R2) of acceleration and force signals during squat exercises were calculated and then analyzed the difference between varied squat cadences and accelerometer placements by utilizing two-way repeated ANOVA. Results: there were significantly high correlations between acceleration and force signals during different squat exercises (r = 0.86~0.96). There were significant main effects of different squat cadences and ACC placements on R2 without interaction effect. R2 of FAST was significant higher than 1D3U, 2D2U, 3D1U, and R2 of 2U2D was significant lower than the other squat cadences, moreover, R2 of 1D3U was significant lower than 1D1U, 1D2U, 2D1U. In addition, R2 on waist site was higher than on wrist joint. Conclusion: ACC is a valid tool to assessing squat exercise. It is more suitable for faster squat speed and better prediction on waist site.

第壹章緒論 1
第一節 研究背景 1
第二節 研究動機 3
第三節 研究目的 4
第四節 研究假設 4
第五節 研究規範與限制 4
第六節 操作型定義 5
第貳章文獻探討 6
第一節 半蹲動作學相關文獻 6
第二節 不同速度對於半蹲動作的影響 8
第三節 加速規配戴在不同位置的應用 10
第四節 文獻總結 15
第參章 研究方法 16
第一節 研究對象 16
第二節 研究時間與地點 17
第三節 研究儀器與設備 18
第四節 研究方法與步驟 21
第五節 資料處理與統計分析 25
第肆章 結果與討論 28
第一節 結果 28
第二節 討論 31
第伍章 結論與建議 37
第一節 結論 37
第二節 建議 38
參考文獻 39

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