The problem in this research is still lack the of swimming speed the using butterfly stroke in swimming athletes of PPLP Riau Province. It is assumed because lack of muscle power of arm and shoulder during arm movements attract (pull) and thrust (push), subtract away of the range ofrecovery time, less of increase in the hips above the water surface for waist flexibility giving influence away…
The problem in this research is still lack the of swimming speed the using butterfly stroke in swimming athletes of PPLP Riau Province. It is assumed because lack of muscle power of arm and shoulder during arm movements attract (pull) and thrust (push), subtract away of the range ofrecovery time, less of increase in the hips above the water surface for waist flexibility giving influence away to…