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  • 學位論文

衰竭運動後增補牛奶對耐力運動表現之影響

Effect of Milk Supplement on the Endurance Performance After an Exhaustive Exercise

指導教授 : 鄭景峰
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摘要


目的:探討在肝醣耗竭運動後,增補不同脂肪含量(全脂、脫脂)牛奶,對隨後耐力運動表現之影響。方法:以9名大學體育系男性學生為受試對象(年齡為20.6 ± 1.2歲,身高為177.5 ± 3.5公分,體重為72.9 ± 6.8公斤)。以重覆量數、平衡次序原則的實驗設計,受試者分別接受3種實驗處理,實驗處理間至少間隔7天。首先,每位受試者必須先接受最大攝氧量 (maximal oxygen uptake, VO2max) 測驗,並推算出最大功率 (power at VO2max, Pmax) 作為後續實驗處理之強度依據。在每次實驗處理中需依序接受肝醣耗竭運動測驗、恢復期4小時以及70% Pmax耐力運動的測驗。在恢復期期間,受試者必須飲用實驗處理增補飲料(全脂牛奶、脫脂牛奶、水)。評估實驗處理增補後之耐力運動耗竭時間 (TTE) 以及心肺功能與代謝的影響。結果:在耐力運動之耗竭時間中,3種實驗處理間沒有顯著差異 (p > .05) ,但是若以水實驗處理為基準值,全脂牛奶實驗處理的進步率顯著高於脫脂牛奶 (WFM vs. NFM, 53.9% ± 72.0% vs. 27.5% ± 52.1%, p = .035) 。在70% Pmax耐力運動中的平均心跳率,全脂牛奶實驗處理顯著高於脫脂牛奶 (WFM vs. NFM, 160 ± 16 vs. 152 ± 14 bpm, p < .05) 。在呼吸交換率中,水實驗處理在耐力運動時的25%TTE顯著低於之後的50-100%TTE (p < .05) ,醣類氧化速率上,全脂牛奶與水實驗處理的25%TTE顯著低於之後的50-100%TTE (p < .05) 。在游離脂肪酸上,在4小時恢復後的立即 (WFM vs. NFM vs. W, 0.23 ± 0.09 vs. 0.13 ± 0.05 vs. 0.66 ± 0.26 mmol•L-1, p < .05) 及70%Pmax耐力運動後 (WFM vs. NFM vs. W, 0.73 ± 0.24 vs. 0.77 ± 0.34 vs. 1.40 ± 0.55 mmol•L-1, p < .05) ,水實驗處理顯著高於全脂牛奶與脫脂牛奶。結論:本研究結果顯示,與脫脂牛奶相較下,增補全脂牛奶,在肝醣耗竭運動後,可能可以提昇非最大耐力的自行車運動至衰竭時間,並且節省肝醣的使用。而由於運動時間的延長,因此有心跳率較高的情形。

關鍵字

運動飲料 營養 耐力表現

並列摘要


Purpose: To investigate the effects of milk-based drinks with different fat (whole- and non-fat) on the endurance performance following an exhaustive interval workout. Methods: Nine male collegiate athletes (age, 20.6 ± 1.2 yrs; height, 177.5 ± 3.5 cm; weight, 72.9 ± 6.8 kg) were recruited in this repeated measured and counter-balance designed study, and completed 3 trials separated by at least 7 days. All subjects were asked to perform incremental cycling exercise test for calculating the power output at 70% maximal oxygen uptake (70%Pmax). In each treatment, subjects performed a glycogen-depleting exercise followed by 4 hours of recovery, and a subsequent endurance trial to volitional exhaustion at 70%Pmax. During the recovery period, subjects consumed the experimental drinks: whole-fat milk (WFM), non-fat milk (NFM), or water (W). The effects of the drink on time to exhaustion (TTE) and the cardiovascular and metabolic responses to endurance trial were examined. Results: No significant differences on the TTE were observed among treatments (p > .05). However, the change of TTE between WFM and W was significantly higher than that in NFM (WFM vs. NFM, 53.9% ± 72.0% vs. 27.5% ± 52.1%, p = .035). The average heart rate during endurance trial at 70%Pmax was significantly higher in WFM than that in NFM (WFM vs. NFM, 160 ± 16 vs. 152 ± 14 bpm, p < .05). In the W treatment, the respiratory exchange ratio and fat oxidation rate at 25%TTE were significantly higher than those at 50%–100%TTE (p < .05). The glucose oxidation rates at 25%TTE were also significantly lower than those at 50%–100%TTE (p < .05) in the WFM and W, respectively. The free fatty acids concentrations immediately after the 4 hours of recovery (WFM vs. NFM vs. W, 0.23 ± 0.09 vs. 0.13 ± 0.05 vs. 0.66 ± 0.26 mmol•L-1, p < .05) and after the endurance trial at 70%Pmax (WFM vs. NFM vs. W, 0.73 ± 0.24 vs. 0.77 ± 0.34 vs. 1.40 ± 0.55 mmol•L-1, p < .05) in W were significantly higher than those in WFM and NFM. Conclusion: These results suggest that milk-based drink with whole-fat, while comparing the non-fat milk, might improve the TTE and induce the glycogen sparing effect during the submaximal cycling exercise following the glycogen-depleting workout, however, this improvement might also increase the heart rate responses during exercise.

並列關鍵字

sport drink nutrition endurance performance

參考文獻


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被引用紀錄


劉亭君(2014)。蛹蟲草或薑黃素之配方增補劑對於小鼠在力竭性運動表現與抗疲勞效果之研究〔碩士論文,國立屏東科技大學〕。華藝線上圖書館。https://doi.org/10.6346%2fNPUST.2014.00206

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