臺灣博碩士論文加值系統

研究目的: 探討具有阻力訓練經驗之男性執行頸後急推(Back jerk, BJ)動作時，不同負荷與槓鈴速度之關係，並驗證以次最大重量預估一次最大反覆(One repetition maximum, 1RM)之可行性。研究方法: 本研究招募16名具阻力訓練經驗之男性（年齡25.1 ± 3.3歲，身高173.9 ± 5.0公分，體重77.7 ± 14.5公斤，阻力訓練經驗至少一年以上），進行四次BJ之1RM測試。第一次測試之目的在實測BJ之1RM，一週後以第一次實測1RM之50、60、70、80、90%強度進行隨後三次測試，且皆實測當日之1RM，每次間隔48小時，以線性換能計收取向心階段之槓鈴平均速度(Mean velocity, MV)，當日實測1RM之MV做為該次測驗之最小速度閾值(Minimum velocity threshold, MVT)。統計分析總共分為三個程序: (1)在確立不同負荷與MV之線性關係上，本研究透過線性迴歸分別探討群組(Group)與個別(Individual)受試者之線性模型; (2)以組內相關系數(Intra-class correlation coefficient, ICC)、變異系數(Coefficient of variation, CV)以及單因子變異數分析(One way ANOVA)檢驗三次MVT之信度，並將個人MVT平均計算三次預估1RM; (3)以單因子變異數分析三次實測之1RM是否有差異，使用相依樣本t檢定分析三次測試中預估與實測1RM是否有顯著差異。結果: 三次的檢測後，群組(Group) 在不同負荷與MV呈現高度線性關係( r = -.945 ± .08, R² = .894 ± 0.015 )，同樣情況也在個別(Individual)受試者模型中出現( r = -.986 ± 0.011, R² = .973 ± .02 )；MVT在三次測試中沒有顯著差異( p = .668, CV = 4.5％, ICC = .890 )。三次的實測之1RM沒有差異( p > .05 )，而實測與預測之1RM則呈現統計上之顯著差異( p < .05，平均誤差值= -3.7 ± 2.6公斤)。結論:本研究利用三次測驗所建立之線性模型無法精準預估每次BJ之1RM，然而，相較過去相關文獻，本研究僅產生微小誤差值，或許能在實務上做為決定BJ 1RM之參考依據。

Purpose: The purpose of this study investigated the reliability of the load–velocity relationship to predict the back jerk (BJ) movement one repetition maximum (1RM). Method: Subjects were sixteen trained strength males of which were at least one years’ experience (age: 25.1 ± 3.3, high: 173.9 ± 5.0cm, weight: 77.7 ± 14.5kg). performed four 1RM test with each trial separated by 48 hours, except for familiarization session (1 week). 1RM trials comprised lifts from six relative loads, including 50, 60, 70, 80, 90, and 100% 1RM, utilize linear transducer to collect Mean velocity (MV) of the concentric phase, minimal velocity thresholds (MVT) is defined as the MV at 1RM. By using linear regression to analysis load–velocity relationship. Reliability of MVT at each day was determined from the magnitude of the intra-class correlation coefficient (ICC), coefficient of variation (CV), and one way Analysis of Variance (ANOVA). Once the individualized regression equation was determined, the MVT for that session was used in the regression equation to predict the 1RM. Paired sample t tests were used to test for statistical significance between the actual 1RM and estimated 1RM. Results: The results revealed that highly negative correlation and coefficients of determination were found in group load–velocity relationship during three days assessment (r = -0.945, R² = 0.894). It’s presented higher coefficients of determination in the individual load–velocity profiles (R² = 0.973). There was no significant difference in MVT during three-day testing (p = 0.668, CV = 4.5%, ICC = 0.890). There was no difference in the actual 1RM during three days (p >. 05). The actual 1RM was significantly different from the estimated 1RM (p < .05), and the average error value was -3.7 ± 2.6 kg; -4.2 ± 2.8%. Conclusion: This conclusion needs to be treated with caution, Although the linear formula which is calculated by utilizing loaded and barbell velocities are able to calculate the estimated back jerk 1RM. but, it still unable to preclude some deviation in practical.

目 錄

第壹章 緒論........1
第一節 前言........1
第二節 研究目的........3
第三節 研究假設........3
第貳章 文獻探討........4
第一節 速度依循訓練........4
第二節 測量動作速度之儀器........9
第三節 負荷與速度之關係........12
第四節 文獻總結........19
第參章 研究方法........20
第一節 實驗對象........20
第二節 實驗地點與時間........20
第三節 研究工具........21
第四節 實驗設計........22
第五節 統計分析........25
第肆章 結果........27
第伍章 討論........31
第陸章 結論與建議........35
參考文獻........36

圖目錄

圖2-1 力量-速度曲線與功率之關係........7
圖2-2 影響力量-速度曲線之訓練........7
圖2-3 RM連續圖........13
圖3-1 GYMAWARE POWER TOOL 線性換能計........21
圖3-2 IPAD平板電腦與GYMAWARE APP........21
圖3-3 標準奧林匹克舉重槓及安全蹲舉架........22
圖3-4 實驗流程........23
圖3-5 頸後急推動作流程........24
圖3-6 斜率與截距之計算........26
圖3-7 計算預估1RM........26
圖4-1 群組(GROUP)之負荷與速度關係........27
圖4-2 個別(INDIVIDUAL)線性回歸模型差異示意圖........28
圖4-3 三天中實測1RM之變化........29

 
表目錄

表2-1 爆發式訓練動作之最適負荷(OPTIMAL LOAD)........16
表2-2 爆發式訓練動作之功率輸出........18
表4-1 個人與群組線性回歸模型之差異........27
表4-2 MVT在三次檢測之信度........28
表4-3 BJ實測與預測1RM比較........29
表4-3 BJ不同負荷下之MV........30

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