Effect of a FastSkin suit on submaximal freestyle swimming.

PURPOSE Nine male collegiate swimmers swam three 183-m freestyle trials at "moderate, moderately hard, and hard" paces while wearing a traditional brief-style suit and on another occasion while wearing a newly designed suit covering the torso and legs with a material designed to reduce drag (FS). METHODS Postswim blood lactate concentration, V0(2), and rating of perceived exertion were measured. Average stroke length and rate, and breakout distance were determined for each swimming trial. Passive drag and buoyant force were also determined on swimmers while wearing both suits. RESULTS Swimmers swam at a higher mean velocity while wearing the FS (pooled mean % difference = 2%), but this was accompanied by a significant increase in V0(2) (4% difference, P< 0.05) and blood lactate concentration (10% difference, P< 0.05). Comparison of physiological responses at standardized freestyle swimming speeds of 1.4 and 1.6 m.s revealed no significant difference between the two suit conditions. Passive drag of the swimmers while being towed was not significantly different between the suits. Swimmers were significantly more buoyant while wearing the brief-style suit than the FS suit (P< 0.05). CONCLUSION These findings provide no evidence of either physical or physiological benefits of wearing these suits during submaximal freestyle swimming.