Comparison of muscle strength, functionality and ankle mobility between genders practicing free weight strength exercises and their association with injuries

Abstract

Introduction: Sex difference has shown that females exhibit a greater ankle ROM than males. On the other hand, few studies have examined the link among the ankles ROM, muscle strength and functional performance in the sex difference. Objective: The purpose of this investigation was to compare the ankle range of motion (ROM), ankle isometric muscle strength and ankle functional performance between males and females practitioners of resistance exercise. Methods: Males (n = 20) and females (n = 20) healthy were recruited. All participants underwent three tests to assess the ROM, muscle strength and functional performance of the ankles, respectively. ROM measurements were taken in both ankles with a digital goniometer. Ankle isometric muscle strength was measured using a load cell. Ankle functional performance was assessed with the Single Leg Hop Test (SLHT) in both limbs. Results: Plantar flexion ROM was significantly greater in the females than males for both ankles (p<.01). No significant difference (p>.05) was found between the groups for ankle-dorsiflexion ROM. Isometric muscle strength during dorsiflexion was significantly lower in the females for both ankles (p<.01). SLHT showed demonstrating better functional performance in the males (p<.001). Isometric muscle strength during plantar flexion was significantly correlated with plantar flexion ROM in males (r= 0.52; p< .02) and females (r= 0.46; p< .03). Conclusion: This study showed the better ankles functional performance and greater isometric muscle strength during ankle-dorsiflexion and plantar flexion in males. On the other hand, plantar flexion ROM was greater in females.