Pre-exercise carbohydrate drink adding protein improves post-exercise fatigue recovery

Tan, Albert Yi-Wey and Hamzah, Sareena-Hanim and Huang, Chih-Yang and Kuo, Chia-Hua (2021) Pre-exercise carbohydrate drink adding protein improves post-exercise fatigue recovery. Frontiers in Physiology, 12. ISSN 1664-042X, DOI

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Purpose: This study aimed to assess the requirement of protein in pre-exercise carbohydrate drinks for optimal endurance performance at high intensity and post-exercise fatigue recovery.Methods: Endurance performance at 85% V.O2(peak) of young men (age 20 +/- 0.9 years, V.(2peak) 49.3 +/- 0.3 L/min) was measured for two consecutive days using cycling time to exhaustion and total work exerted 2 h after three isocaloric supplementations: RICE (50 g, protein: 1.8 g), n = 7; SOY + RICE (50 g, protein: 4.8 g), n = 7; and WHEY + RICE (50 g, protein: 9.2 g), n = 7.Results: Endurance performance was similar for the three supplemented conditions. Nevertheless, maximal cycling time and total exerted work from Day 1 to Day 2 were improved in the WHEY + RICE (+21%, p = 0.05) and SOY-RICE (+16%, p = 0.10) supplemented conditions, not the RICE supplemented condition. Increases in plasma interleukin-6 (IL-6) were observed 1 h after exercise regardless of supplemented conditions. Plasma creatine kinase remained unchanged after exercise for all three supplemented conditions. Increases in ferric reducing antioxidant power (FRAP) after exercise were small and similar for the three supplemented conditions.Conclusion: Adding protein into carbohydrate drinks provides no immediate benefit in endurance performance and antioxidant capacity yet enhances fatigue recovery for the next day. Soy-containing carbohydrate drink, despite 50% less protein content, shows similar fatigue recovery efficacy to the whey protein-containing carbohydrate drink. These results suggest the importance of dietary nitrogen sources in fatigue recovery after exercise.

Item Type: Article
Funders: Universiti Malaya (BKS003-2016), University of Taipei, Taiwan (20190001), Ministry of Science and Technology, Taiwan
Uncontrolled Keywords: free radical scavenging capacity; plant-based protein; reduced-to-oxidized glutathione; GSH; GSSG; soy; ferric reducing antioxidant power; FRAP
Subjects: G Geography. Anthropology. Recreation > GV Recreation Leisure
Q Science > QP Physiology
Divisions: Faculty of Sports and Exercise Science (formerly known as Centre for Sports & Exercise Sciences)
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 18 Mar 2022 00:32
Last Modified: 18 Mar 2022 00:32

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