Abstract
PurposeThe purpose of this study is to translate laboratory-based research on beverage-based supplements to a naturalistic, field setting in adolescent athletes. To this end, we tested the effects of two commercially-available drinks on strength in a field-based setting with both male and female high school athletes completing a summer training program.MethodsOne hundred and three high school athletes completed the study (M age = 15.3, SD = 1.2; 70.9% male; 37.9% Afr. Amer.). Measures included a composite strength score (bench press + squat). Participants completed 1 week of pre- and post-testing, and 4 days per week of strength and conditioning training for 5 weeks. Participants were randomly-assigned to receive either CM or CHO immediately post-exercise.ResultsA 2 (group) × 2 (time) repeated measures ANOVA showed there was a significant main effect on time for increase in the composite strength score (p = .002, ŋp2 = .18). There was a significant interaction of composite strength score between groups, (p = .04, ŋp2 = .08). The CM group (12.3% increase) had significantly greater improvements in composite strength from pre- to post-test than CHO (2.7% increase). There were no differences in these results based on demographic variables.ConclusionThis is the first study comparing the impact of CM and CHO on athletic outcomes in an adolescent population in a field-based environment. CM had a more positive effect on strength development and should be considered an appropriate post-exercise recovery supplement for adolescents. Future research will benefit from longer study durations with larger numbers of participants.
Highlights
Resistance exercise results in several adaptations to the musculoskeletal system
Much of the work has been applied to endurance training, where CHO + PRO supplements have been shown to be the superior post-exercise recovery compared to a carbohydrate (CHO) only supplement in 32 untrained male and female participants (18–35 years old) and in eight untrained males (M age = 24) [6, 7]
The results indicated that the chocolate milk (CM) group had greater improvements in the composite strength score compared to the CHO group
Summary
Resistance exercise results in several adaptations to the musculoskeletal system. it results in greater strength and hypertrophy [1]. Much of the work has been applied to endurance training, where CHO + PRO supplements have been shown to be the superior post-exercise recovery compared to a carbohydrate (CHO) only supplement in 32 untrained male and female participants (18–35 years old) and in eight untrained males (M age = 24) [6, 7]. While promising, these data cannot be directly applied to resistance exercise as there are unique challenges to supplementation. There is some evidence that resistance exercise results in an increase in cortisol levels [8]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the International Society of Sports Nutrition
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
