Visual restriction on crawl swimming skill influence the variant and invariant aspects of swimming techinque
Perceptual manipulation in the visual field, when observing the effect of retinal manipulation, can be extremely important in creating changes in the swimmer's body perception and technique. The aim of this study was to observe and understand the role restriction has in swimming ability (Partial glasses occlusion - restriction in the body) and can influence the variant and invariant aspects of crawl swimming.