運動恢復期共軛亞麻油酸補充對運動耐力恢復的影響

Effect of Post-Exercise Oral Conjugated Linoleic Acid Supplementation on Subsequent Endurance Exercise Performance

10.5297/ser.1404.010

洪大程(Ta-Cheng Hung)；李林鎰(Lin-Yi Lee)；巫錦霖(Ching-Lin Wu)；邱彥成(Yen-Chen Chiu)；張振崗(Cheng-Kang Chang)；程一雄(I-Shiung Cheng)

增能劑 ； 呼吸交換率 ； 碳水化合物氧化率 ； 脂肪氧化率 ； ergogenic aid ； respiratory exchange ratio (RER) ； carbohydrate oxidation rate ； fat oxidation rate

大專體育學刊

14卷4期（2012 / 12 / 31）

492 - 499

繁體中文;英文

共軛亞麻油酸（conjugated linoleic acid, CLA）是一群存在於自然界中含有兩個共軛雙鍵的不飽合脂肪酸，具有影響脂質代謝，促進脂肪氧化的功能。本研究目的在於探討單次運動後，立即給予碳水化合物與共軛亞麻油酸補充，對後續腳踏車耐力運動表現的影響。8名男性健康受試者在單次60分鐘的70% VO2peak腳踏車運動後，隨機、交叉地完成CLA或安慰劑補充試驗處理，兩次試驗間隔至少7 天。CLA試驗為運動後立即給予碳水化合物並同時補充共軛亞麻油酸；安慰劑試驗為運動後立即碳水化合物和安慰劑補充。運動後恢復期3小時內每30分鐘收集血液和氣體樣本，樣本收集完畢後，在第3小時進行後續75% VO2max每分鐘維持60轉速腳踏車耐力運動表現測試，並記錄至衰竭的時間。結果顯示兩次試驗之間的運動表現無顯著差異（運動表現測試：CLA試驗37.3 ± 3.1 分鐘；placebo 試驗38.4 ± 1.8 分鐘），而且血漿中的葡萄糖、胰島素、游離脂肪酸與甘油濃度，和呼吸交換率、碳水化合物氧化率與脂肪氧化率皆無顯著差異。本研究結論：對有規律運動習慣，非運動選手的健康男性，單次60分鐘、70% VO2peak運動後，立即補充碳水化合物與共軛亞麻油酸，並不能有效地提升3小時後緊接而來的後續腳踏車耐力運動表現。

Conjugated linoleic acid (CLA) is referred to as a group of polyunsaturated fatty acid with two double bonds. The present study was aimed to determine the effect of CLA supplementation on subsequent endurance exercise performance after 3 hours of post-exercise recovery. Eight healthy male subjects (aged 22.25 ± 0.73 years) completed a double-blind crossover trial after 60-min cycling exercise at 70% VO2peak oxygen consumption separately by 7-day washout period. Subjects consumed 4.0 g CLA supplementation or placebo with a carbohydrate meal for a 3-h recovery following exercise. The subsequent endurance exercise performance (CLA trial: 37.3 ± 3.1 min; Placebo trial: 38.4 ± 1.8 min) was not significantly improved after CLA supplementation for a 3 hrs recovery following exercise. Furthermore, no differences were found in circulating glucose, insulin, nonesterified fatty acid (NEFA) and glycerol concentrations with CLA supplement compared to placebo supplement. Respiratory exchange ratio (RER), carbohydrate oxidation rate and fat oxidation rate were also not significantly altered with supplementation. Therefore, the present study concludes that post-exercise oral CLA supplementation could not enhance the subsequent endurance exercise performance in healthy untrained male subjects with regular physical exercise.

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