應用心跳率控制指標應用於划船測功儀之信效度

Validity and reliability of heart rate control index applied on rowing ergometer

目的：探討以不同強度（80％、65％與50％）之心跳率控制（heart rate control，HRC）測驗與心跳控制強度變異指標（intensity variance by heart rate control，IVHRC）應用於划船測功儀之信效度，並建立預測運動表現的迴歸模式。方法：以划船選手16名（男性7名、女性9名，年齡18.9±2.08歲、身高167.7±7.83公分、體重63.1±8.16公斤與訓練經歷4.8±2.08年）為對象，受試者分別接受划船測功儀上的漸增負荷測驗、2000公尺衝刺測驗（2000max）以及80％、65％與50％最大心跳率（HRmax＝220－年齡）之2000公尺HRC測驗各兩次，同時分別記錄每500公尺所完成的時間獲得IVHRC進行分析。結果：信度分析結果顯示，不同強度之HRC時間與IVHRC皆有相當高的再測信度（ICC＝.89～.98，p＜.05），且兩次測驗結果並無差異。同時效度分析顯示不同強度HRC運動時間與2000max（r＝.81～.90，p＜.05）、V.O2max（r＝-.76～-.85，p＜.05）、Wpeak（r＝-.80～-.85，p＜.05）皆達顯著相關；不同強度IVHRC與2000max（r＝-.82～-.87，p＜.05）、V.O2max（r＝.72～.81，p＜.05）、Wpeak（r＝.80～.84，p＜.05）亦有顯著相關。進一步簡單與逐步多元迴歸分析顯示，不同強度HRC具有良好的預測效度（R2＝.63～.80，p＜.05），且80％HRC結合50％IVHRC為預測2000公尺運動表現的最佳模式（R2＝.89，p＜.05）。結論：HRC與IVHRC於划船測功儀運動具良好的信效度，可應用於划船運動強度監控與預測運動表現。Purpose: to evaluate the validity and reliability of heart rate control (HRC) at 80%, 65%, 50% age-predicted HRmax and intensity variance index (IVHRC) index, as well as optimal predictive model on rowing ergometer. Methods: Sixteen rowers (7 males and 9 females, 18.9 ± 2.08 yrs, height: 167.7 ± 7.83cm, weight: 63.1 ± 8.16kg) were recruited to participate in an incremental test (V.O2max and Wpeak obtained), and a 2000m performance test (2000max). In addition, 2 trials of 2000m rowing at 80%, 65%, 50% HRmax at least 24hrs apart were also performed, and time to 500m, 1000m, 1500m and 2000m were recorded to obtain HRC index. Results: Intraclass correlation coefficient (ICC) analysis showed that HRC and IVHRC at different intensity of HRmax have high test-retest reliability (ICC = 0.89~0.99, p < .05), and there was no significant difference between 2 HRC trials. HRC at different intensities of HRmax in 2000m rowing trials showed significant correlation with 2000max (r = .81~ .90, p < .05), V ‧ O2max (r = - .76~- .85, p < .05) and Wpeak (r = - .80~ - .85, p < .05). Moreover, IVHRC at different intensities of HRmax were also correlated with 2000max (r = - .82~ - .87, p <0.05), V.O2max (r = .72~ .81, p < .05) and Wpeak (r = .80~ .84, p < .05); All of which showed both HRC and IVHRC have good concurrent validity. Simple linear and stepwise regression analysis indicated that HRC and IVHRC also have high predictive validity (R2 = 0.63~0.89, p< .05) in 2000max assessment. Conclusion: HRC and IVHRC indices were valid and reliable in applying on rowing exercise, which can be applied in monitoring exercise intensity and predicting performance on rowing exercise.