Lower-extremity isokinetic strength ratios of elite springboard and platform diving athletes

ABSTRACTObjectives: The purpose of the present study was to examine knee extensor and flexor muscle strength ratios of an elite group of diving athletes.Methods: Sixteen divers (10 females and 6 males) from the Brazil national team were assessed for lower-body strength. They had participated in international competitions such as the 2016 Olympic Games and 2015 Pan American Games. The dynamic concentric torque of their knee flexor and extensor muscles were evaluated using a Biodex isokinetic dynamometer. Bilateral tests were performed at 60o s−1. Flexor to extensor (F/E) peak torque ratio and percentage bilateral difference (BD%) was also measured.Results: The results revealed that elite diving athletes produced higher than usual reported in previous studies for relative knee extension torque (3.2 for females and 3.6 for males N∙m∙kg−1). However, they presented low levels of knee flexor torque (1.5 for females and 1.8 for males N∙m∙kg−1). These results are reflected in a low F/E ratio (0.39 to 0.49). Males...