Benjanuvatra N, Dawson G, Blanksby BA, Elliott BC.
School of Human Movement and Exercise Science, University of Western Australia, Crawley.
ABSTRACT
A cross-sectional comparison between the buoyancy,
passive and net active drag force characteristics of full-length,
Fastskin swimsuits with that of standard swimsuits was completed
with nine Open National level swimmers (5 males and 4 females).
Subjects were weighed in a hydrostatic tank and then towed via a mechanical winch on the surface
and 0.4 m deep at 1.6, 2.2 and 2.8 m/s.
The subjects performed a prone streamlined glide and maximum effort flutter kick at each towing velocity and depth.
Hydrostatic weight differences between swimsuit types were not significant
(p> 0.05.)
Fastskin passive drag values were significantly less than normal swimsuits during surface towing at 1.6 and 2.8 m/s:
and at 0.4 m deep towing at 1.6, 2.2 and 2.8 m/s.
Net active drag force values also were lower for the Fastskin suits when compared with those of normal swimsuits
and a significant difference existed for surface towing at all three velocities of 1.6, 2.2 and 2.8 m/s.
The full-length, Fastskin swimsuits created less total hydrodynamic resistance than normal swimsuits
while providing no additional buoyancy benefits.
PMID: 12188083 [PubMed - indexed for MEDLINE]
|