| 摘要: | 目的：探討不同組間休息再分配之等慣性蹲舉訓練對神經肌肉功能表現及肌肉氧合作用之立即性效果。方法：招募 15 名具阻力訓練經驗之大專體育相關科系男性學生為實驗對象，以重複量數及平衡次序方式分別執行傳統訓練 (traditional set, TS) 及時間再分配訓練 (rest redistribution, RR) 之等慣性阻力蹲舉 (inertial training squat, ITSQ)。 兩種實驗處理至少間隔 7 天。測驗當天，研究對象首先測量肌肉氧飽和度 (muscle oxygen saturation, SmO2) 與血乳酸的安靜值，在動態熱身後，執行反向跳 (countermovement jump, CMJ) 測驗作為前測基準值，接著分別以 0.075 kg·m2 慣性負荷執行 ITSQ (TS 與 RR)。TS 處理為單回合運動組內進行連續 12 次動作反覆，共計3 回合運動組，組間休息為 120 秒；RR 處理為單回合運動組內進行連續 6 次動作反覆，共計 6 回合運動組，組間休息為 60 秒。兩組總動作反覆次數均為 36 次。運動全程監控動作速度 (平均速度 [mean velocity, MV]、峰值速度 [peak velocity, PV] )、功率輸出 [平均功率 [mean power, MP] 、峰值功率 [peak power, PP])、 SmO2 在運動過程中變化程度、運動組間的血乳酸濃度與運動自覺疲勞程度 (rating of perceived exertion, RPE) 的變化，於運動後立即與運動後 24 小時，觀察 CMJ 高度變化情況。統計方法以相依樣本二因子變異數分析考驗各組別在各時間點之神經肌肉功能表現、肌肉氧合作用、血乳酸與 RPE 的差異。結果：TS 與 RR 在功率輸出及動作速度上無顯著差異。TS 在第二與第三回合運動組的血乳酸顯著高於 RR 的第二與第三回合運動組 (p < .05)。TS 在第二回合運動組的 RPE 顯著大於 RR 的第二回合運動組 (p < .05)。TS 在第二回合運動組的 SmO2 的變化量顯著大於 RR 的第二回合運動組 (p < .05)。RR 在 24 小時後，CMJ 顯著低於運動前 (p <.05)。結論：在相同等慣性阻力及動作反覆次數條件下，TS 與 RR 並無法有效改善大專男性體育學生功率輸出及動作速度表現；然而，RR 卻能有效降低血乳酸濃度與 RPE 反應。
Purpose: This study aimed to investigate the acute effects of rest redistribution during iso-inertial squat training on neuromuscular performance and muscle oxygenation. Method: Fifteen male collegiate students majoring in physical education and with resistance training experience participated in the study. They performed iso-inertial training squats (ITSQ) under two conditions: traditional set (TS) and rest redistribution (RR), using repeated measures and balanced order design with at least a 7-day washout period between treatments. Participants' muscle oxygen saturation (SmO2) and resting blood lactate levels were measured on the test day. A countermovement jump (CMJ) test was conducted as a pre-test baseline following a standardized dynamic warm-up. The ITSQ was conducted with a 0.075 kg·m² inertial load under both TS and RR conditions. The TS condition involved performing consecutive 12 repetitions in a single exercise set for 3 sets, with 120 seconds of rest between sets. The RR condition involved performing 6 repetitions per set for 6 sets with 60 seconds rest between sets. During the intervention, movement velocity (mean velocity [MV], peak velocity [PV]), power output (mean power [MP], peak power [PP]), and SmO2 were monitored. Blood lactate concentrations and ratings of perceived exertion (RPE) were recorded between sets. CMJ height was compared after completing the intervention and post-24 hours. Statistical analysis was conducted via a two-way ANOVA for dependent samples to compare neuromuscular performance, muscle oxygenation, blood lactate, and RPE between groups at various time points. Results: No significant differences were found between TS and RR in power output and movement velocity. Blood lactate concentrations in the second and third sets of TS were significantly higher than in the second and third sets of RR (p < .05). RPE in the second set of TS was significantly greater than in the second set of RR (p < .05). The change in SmO2 in the second set of TS showed more significant than in the second set of RR (p < .05). CMJ height at 24 hours after post-exercise in RR was significantly lower than the pre-exercise (p < .05). Conclusion: Under the equal iso-inertial load and repetition conditions, both TS and RR did not improve the power output and movement velocity for collegiate male PE students. However, RR may reduce blood lactate concentrations and RPE responses effectively. |
