Effect of ad libitum intake of lactose-free milk on subsequent performance of collegiate badminton athletes

Abstract

The influence of dehydration on strength after a competitive match of badminton players has been previously studied; however, no research has been done on the effect of milk on performance in badminton. This study therefore aimed to investigate the effects of ad libitum intake of low-fat lactose-free milk (LFM) on subsequent performance of badminton athletes. Eleven collegiate badminton athletes (Mean ± standard deviation for Age = 19.3 ± 1.2 years; Height= 165.4 ± 9.1 cm) participated in this study. A randomized crossover study design was used (with ≥7-day washout between trials) where subjects were assigned to one of the test beverages: lactose-free skim milk (LFM), carbohydrate-electrolyte sports drink (CE) or water (CON). Performance tests were measured before and after subsequent games. Other variables measured included hydration status, perceived recovery and selected subjective perceptions. Palatability and amount ingested was highest for CE and lowest for CON (Mean ± standard deviation for CE 2215.24 ± 690.19 ml >LFM 1530.8 ± 849.9 ml >CON 1341.2 ± 424.2 ml, p = .013) but all beverages affected hydration status and selected performance variables after subsequent games in badminton. Perceived exertion and recovery were similar for the beverages as well. Thirst and gastrointestinal discomfort were however significantly greater for LFM.