Consumption of an Oral Carbohydrate-Protein Gel Improves Cycling Endurance and Prevents Postexercise Muscle..
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چکیده
Saunders, M.J., N.D. Luden, and J.E. Herrick. Consumption of an oral carbohydrate-protein gel improves cycling endurance and prevents postexercise muscle damage. J. Strength Cond. Res. 21(3):678–684. 2007.—Investigators have reported improved endurance performance and attenuated postexercise muscle damage with carbohydrate-protein beverages (CHO P) versus carbohydrate-only beverages (CHO). However, these benefits have been demonstrated only when CHO P was administered in beverage-form, and exclusively in male subjects. Thus, the purposes of this study were to determine if an oral CHO P gel improved endurance performance and post-exercise muscle damage compared to a CHO gel, and determine if responses were similar between genders. Thirteen cyclists (8 men, 5 women; V̇O2peak 57.9 7.0 ml·kg 1·min 1) completed two timed cycle-trials to volitional exhaustion at 75% of V̇O2peak. At 15-minute intervals throughout these rides, subjects received CHO or CHO P gels, which were matched for carbohydrate content (CHO 0.15 g CHO·kg BW 1; CHO P 0.15 g CHO 0.038 g protein·kg BW 1). Trials were performed using a randomly counterbalanced, double-blind design. Subjects rode 13% longer (p 0.05) when utilizing the CHO P gel (116.6 28.5 minutes) versus the CHO gel (102.8 25.0 minutes). In addition, men (101.8 24.6; 114.8 26.2) and women (104.4 28.6; 119.6 34.9) responded similarly to the CHO and CHO P trials, with no significant treatment-by-gender effect. Postexercise creatine kinease (CK) was not significantly different between treatments. However, CK increased significantly following exercise in the CHO trial (183 116; 267 214 U·L 1), but not the CHO P trial (180 133; 222 141 U·L 1). Therefore, to prolong endurance performance and prevent increases in muscle damage, it is recommended that male and female cyclists consume CHO P gels rather than CHO gels during and immediately following exercise.
منابع مشابه
Consumption of an oral carbohydrate-protein gel improves cycling endurance and prevents postexercise muscle damage.
Investigators have reported improved endurance performance and attenuated post-exercise muscle damage with carbohydrate-protein beverages (CHO+P) versus carbohydrate-only beverages (CHO). However, these benefits have been demonstrated only when CHO+P was administered in beverage-form, and exclusively in male subjects. Thus, the purposes of this study were to determine if an oral CHO+P gel impro...
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