Effect of carbohydrate and caffeine ingestion on badminton performance

Abstract

Purpose: To investigate the effect of ingesting carbohydrate and caffeine solutions on measures that are central to success in badminton. Methods: Twelve male badminton players performed a badminton serve-accuracy test, coincidence-anticipation timing (CAT), and a choice reaction-time sprint test 60 min before exercise. Participants then consumed 7 mL/kg body mass of either water (PLA), 6.4% carbohydrate solution (CHO), a solution containing a caffeine dose of 4 mg/kg, or 6.4% carbohydrate and 4 mg/kg caffeine (C+C). All solutions were flavored with orange-flavored concentrate. During the 33-min fatigue protocol, participants were provided with an additional 3 mL/kg body mass of solution, which was ingested before the end of the protocol. As soon as the 33-min fatigue protocol was completed, all measures were recorded again. Results: Short-serve accuracy was improved after the ingestion of CHO and C+C compared with PLA (P =.001, ∈p2 =.50). Long-serve accuracy was improved after the ingestion of C+C compared with PLA (P