Dehydration level after indoor cycling training

INTRODUCTION: Dehydration in indoor cycling is an understudied topic in the literature.OBJECTIVE: To determine the level of dehydration of practitioners of indoor cycling after activity, and the presence of protein in the urine.METHODS: Thirty men (25.5 ± 3.9 years) indoor cycling practitioners who conducted a 50-minute intermittent training were recruited: a) 5 minutes of warm-up without load and high speed; b) 40 minutes of intermittent stimuli (six intense cycles of 5 minutes and five mild cycles of 3 minutes); c) 5 minutes of cool-down without load and with regression of speed. For checking the hydration status were evaluated: body mass, relative and absolute dehydration, degree of dehydration, sweating rate and density of urine. The training intensity was verified by heart rate and perceived exertion.RESULTS: The body mass loss after training was significant (0.523±0.362kg), corresponding to a percentage of dehydration of 0.69±0.47%. No subject showed a serious level of dehydration. Concerning protein loss in the urine, 83.3% of subjects had low levels, while 16.7% showed moderate levels.CONCLUSION: Dehydration and loss of proteins in the urine showed low levels after training indoor cycling.