Straightness knee butterfly kick makes more lactate acid during butterfly swimming. A case study with a high-level swimmer - Ide, T.; Takise, S.; Yoshimura, Y.; Kawamoto, K.; Schaffer, S.; Johnson, W. F.; Kawakami, T. (International Journal of Swimming Kinetics, 2012)
Keywords: swimming; butterfly swimming; technique; movement co-ordination; high performance sport; knee; lactate; posture; velocity; Australia; endurance sports; training science; biological and medical sciences