大豆卵磷脂增補對羽球選手生理反應與運動表現之影響

The Effects of Soybean Lecithin Supplementation on Physiological Responses and Exercise Performance of Badminton Players

10.5297/ser.200306_5(1).0026

李寧遠(Ning-Yuean Lee)；許美智(Mei-Chih Hsu)；余儀(Chin-Yi Yu)；林萬登(Wan-Teng Lin)；程一雄(Hsiung Cheng)

卵磷脂 ； 膽鹼 ； 乙醯膽鹼 ； 羽球選手 ； 運動表現 ； lecithin ； choline ； acetylcholine ； badminton players ； exercise performance

大專體育學刊

5卷1期（2003 / 06 / 30）

287 - 295

繁體中文

Choline, an important precursor for the synthesis of the neurotransmitter-acethlcholine (ACh), along with fatty acid, glycerol and phosphorous acid, are the components of lecithin (phosphaticholine). A substantial amount of choline is required to synthesize acetylcholine in cholinergic activation on the skeletal muscles during prolonged exercise. The purpose of this study was to examine the effects of supplemental lecithin on the physiological responses and exercise performance of badminton players. Thirteen male badminton players were randomly divided into two groups (lecithin or placebo) and performed prolonged exercise at 60%VO2max. After one week, the subjects either ingested 14.4 g lecithin or placebo (malto dextrin) one hour before the same prolonged exercise. The results showed that there were no significant differences in serum glucose concentrations pre- and post-exercise, but higher serum free fatty acids and serum lactate concentrations at post-exercise (p ＜ 0.05) and lower plasma choline concentrations at post-exercise (p ＜0.05). After lecithin supplementation, there was no significant difference in the concentration of plasma choline. The supplemental lecithin did not affect the concentrations of serum glucose and serum free fatty acids, maximal respiratory exchange ratio and maximal oxygen uptake, but longer time of exhaustion, higher respiratory exchange ratio and serum lactate of post-exercise by lecithin supplementation. In summary, the effect of lecithin supplementation would promote carbohydrate oxidative metabolism and maintain plasma choline concentration for the synthesis of the acetyicholine during endurance exercise that improvement on endurance exercise performance.

Choline, an important precursor for the synthesis of the neurotransmitter-acethlcholine (ACh), along with fatty acid, glycerol and phosphorous acid, are the components of lecithin (phosphaticholine). A substantial amount of choline is required to synthesize acetylcholine in cholinergic activation on the skeletal muscles during prolonged exercise. The purpose of this study was to examine the effects of supplemental lecithin on the physiological responses and exercise performance of badminton players. Thirteen male badminton players were randomly divided into two groups (lecithin or placebo) and performed prolonged exercise at 60%VO2max. After one week, the subjects either ingested 14.4 g lecithin or placebo (malto dextrin) one hour before the same prolonged exercise. The results showed that there were no significant differences in serum glucose concentrations pre- and post-exercise, but higher serum free fatty acids and serum lactate concentrations at post-exercise (p ＜ 0.05) and lower plasma choline concentrations at post-exercise (p ＜0.05). After lecithin supplementation, there was no significant difference in the concentration of plasma choline. The supplemental lecithin did not affect the concentrations of serum glucose and serum free fatty acids, maximal respiratory exchange ratio and maximal oxygen uptake, but longer time of exhaustion, higher respiratory exchange ratio and serum lactate of post-exercise by lecithin supplementation. In summary, the effect of lecithin supplementation would promote carbohydrate oxidative metabolism and maintain plasma choline concentration for the synthesis of the acetyicholine during endurance exercise that improvement on endurance exercise performance.

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