Immediate Effects of Training with Wearing a Triathlon Wetsuit on Post 400m Swim : Utilizing during Warming-up Swim for a 400m Time Trial

摘要

This study aimed to investigate the effects of wearing a triathlon wetsuit (WS) during warming-up swim on post-400m time trial with a swimsuit (SS). Five male triathletes performed prescribed warming-up swim, followed by a maximal 400m swim after about 15 min rest on land. The warming-up swim were conducted in a WS or a SS condition, and the post-400m swim were conducted in a SS condition using indoor 50m pool. Mean velocities for the post-400m swims (V400) were calculated, and blood lactate concentrations (La) and rating of perceived exertion (RPE) after the post-400m swims were measured. Furthermore, stroke rate (SR) and stroke length (SL) were measured for each 50m lap. These measurements obtained during the post-400m swims were compared between two suit conditions during the warming-up swims. No significant differences were found in V400, La and RPE between a WS and a SS conditions. For each 50m lap, SR was significantly lower and SL was tended to be greater in a WS condition. These results suggested that warming-up swim with a WS could modify the stroke patterns with little effect on exerting maximal effort and performance during the post-400m swim. To verify effective usage of wearing a WS as a training gear, further researches were required.