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題名 | 增補脫脂牛奶對中強度耐力運動表現及生理反應之影響=Effect of Skim Milk Supplement on Moderate Endurance Performance and Physiological Responses |
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作者姓名(中文) | 陳佩筠; 郭堉圻; 鄭國輝; 鄭景峰; | 書刊名 | 文化體育學刊 |
卷期 | 15 2012.12[民101.12] |
頁次 | 頁31-45 |
分類號 | 993.194 |
關鍵詞 | 營養; 恢復; 運動飲料; Nutrition; Recovery; Sports drink; |
語文 | 中文(Chinese) |
中文摘要 | 目的:探討脫脂牛奶對中強度耐力運動表現及生理之影響。方法:以9名大學體育系男性為受試對象。本研究以隨機交叉的方式,進行間隔至少7天的2種實驗處理。在實驗處理前,受試者必須在自行車測功儀上接受最大攝氧量(maximal oxygen uptake, VO2max)測驗,並推算出最大功率(Pmax)。在實驗處理中,受試者須依序接受肝醣耗竭運動測驗、4小時恢復期及隨後的70%Pmax耐力運動測驗,並於肝醣耗竭運動測驗後的立即與第2小時,攝取實驗處理指定飲料(脫脂牛奶,SM;水,W)。實驗過程中監測血乳酸(blood lactate,La)、心跳率(heart rate,HR)、攝氧量(oxygen uptake,VO2)、呼吸交換率(respiratory exchange ratio,RER),耗竭時間(time to exhaustion,TTE)以及運動自覺感受(rating of perceived exertion,RPE)、游離脂肪酸(free fatty acid,FFA)。結果:70%Pmax耐力運動測驗的TTE、VO2、HR及RPE,在實驗處理間皆無顯著差異(p > .05),但是,FFA(SM vs. W, 0.13 ± 0.05 vs. 0.66 ± 0.26 mmol.L^(-1), p < .05)及La(SM vs. W, 1.1 ± 0.2 vs. 1.4 ± 0.55 mmol.L^(-1), p < .05)在增補後,增補水均顯著高於脫脂牛奶。RER在70%Pmax耐力運動的50%TTE(SM vs. W, 0.88 ± 0.06 vs. 0.93 ± 0.05, p < .05)及100%TTE(SM vs. W, 0.87 ± 0.07 vs. 0.93 ± 0.05, p < .05)時,脫脂牛奶顯著低於水。脂肪氧化速率在70%Pmax耐力運動中的50%至100%TTE(SM vs. W, 0.56 ± 0.04 vs. 0.28 ± 0.02 g.min^(-1), p < .05)時,脫脂牛奶顯著高於水。結論:本研究結果顯示在耗竭運動後增補脫脂牛奶可能有助於恢復,並且增加中強度運動中的脂肪氧化速率。 |
英文摘要 | Purpose: To investigate the effect of skim milk supplement on the moderate endurance performance and physiological responses. Methods: Nine college male athletes voluntarily participated in this randomized and crossover designed study, and completed 2 trials separated by at least 7 days: skim milk (SM) and water (W) treatments. Before treatment, the incremental cycling exercise test was performed on a cycle ergometer to assess maximal oxygen uptake (VO2max) and power output at VO2max (Pmax). In each trial, participants were asked to perform a glycogen-depleting exercise followed by 4-h of recovery, and a sub maximal cycling exercise at 70%Pmax to exhaustion. Immediately following first exercise bout and 2-h of recovery, participants consumed either SM or W. Blood lactate (La), heart rate (HR), oxygen uptake (VO,), respiratory exchange ratio (RER), time to exhaustion (TTE), rating of perceived exertion (RPE) and free fatty acid (FFA) were continuously measured throughout the trial. Results: No significant differences were found on the TTE, VO2, HR and RPE during the 70%Pmax submaximal cycling exercise between SM and W (p > .05). However, the FFA (SM vs. W, 0.13 ± 0.05 vs. 0.66 ± 0.26 mmol.L^(-1),p < .05) and La (SM vs. W, 1.1 ± 0.2 vs. 1.4 ± 0.5 mmol.L^(-1), p < .05) in W after supplement were significantly higher than those in SM. The RER in SM were significantly lower than those in W at 50%TTE (SM vs. W, 0.88 ± 0.06 vs. 0.93 ± 0.05, p < .05) and 100%TIE (SM vs. W, 0.87 ± 0.07 vs. 0.93 ± 0.05, p < .05) during the 70%Pmax submaximal cycling exercise. Moreover, the fat oxidation rates in SM were significantly higher than those in W at 50% ~ 100% TTE (SM vs. W, 0.56 ± 0.04 vs. 0.28 ± 0.02 g.min^(-1),p < .05), during the 70% Pmax submaximal cycling exercise. Conclusion: These results suggest that skim milk is an effective recovery aid after exhaustive exercise, and it can increase the fat oxidation rate during the moderate exercise. |
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