Effect of Post-Exercise Chocolate Milk Consumption on Subsequent Exercise Performance and Mood State

Abstract

A demand for nutritional supplements to enhance recovery after endurance training is increasing among athletes to maximize their performance. The present study was conducted to identify the effects of chocolate milk consumption on blood glucose level, hydration status and mood state of the athlete after aerobic exercise. Ten male students from the Faculty of Sport Science and Coaching, UPSI (23.7±.68 years) participated in two trials separated by 1 week. For each trial consumed either chocolate milk (CM) or glucose drink (GD) after a 60 minute run at 70% of VO2max (46.43±1.32 ml/kg/min). Blood glucose levels were determined 1 and 2 hours after post-exercise CM or GD ingestion. Urine samples were collected before and 2 hours after exercise to assess hydration status. The mood state of the subject was also measured using the BRUMS questionnaire. The data were analysed by using a paired sample t-test. The results show that blood glucose levels and the urine colour are not significantly different between CM and GD consumption after exercise. Consumption of CM and GD able to reduce the feelings of tiredness, fatigue and depression, and increase vigour. These findings indicate both drinks can be consumed as a post-exercise recovery drink for endurance athletes. Keyword: Chocolate Milk, Post-Exercise, Recovery, Blood Glucose, Urine Colour, Mood. Introduction Muscle recovery after physical activity is very significant, particularly in sports and rehabilitation. Muscle fatigue can be defined as a reduction in the ability to increase muscle strength or power regardless of whether the task is retained or is caused by the peripheral (Enika and Duchateau, 2008) or central nerves (Gandevia, 2001). Due to this matter, two important aspects need to be encountered to reduce fatigue and enhance recovery which are through peripheral mechanism consist of energy compound restoration, and central mechanism represented by stress-related brain chemical production. In specific, peripheral recovery depends on body glycogen storage (Jentjens & Jeukendrup, 2003) and rehydration (Shirreffs, Armstrong, & Cheuvront, 2004). Long-term International Journal of Academic Research in Business and Social Sciences Vol. 9 , No. 6, June, 2019, E-ISSN: 2222-6990 © 2019 HRMARS 453 deterioration may also be associated with muscle injury caused by exercise and muscle soreness (DOMS). In terms of recovery after endurance training, the main goal of dietary intervention is usually to promote the proc…