ABSTRACT
Objective The purpose of this study was to assess isokinetic strength of lower extremities and find out weak muscles in Chinese elite fencers. Methods Bilateral peak torque of flexors and extensors of hip, knee and ankle in 26 national fencers,aged 23.1±2.36 yrs,were tested isokinetically at speeds of 60 and 240 deg/sec. Results (1)Hip: compared with 60 deg/sec,peak torques of bilateral extensors significantly decreased at 240 deg/sec (P0.05); At two velocities, flexor peak torques in leading leg of men fencers were significantly higher than trailing one(P0.05);Flexor/extensor torque ratio was lower than normal at two velocities in all fencers. (2)Knee: strength of flexors and extensors in 60 deg/ sec and extensor in 240 deg/sec of men fencers were significantly different between leading and trailing legs (P0.05); ankle flexor/extensor ratio were lower than normal at two velocities in all fencers. Conclusion (1)Bilateral asymmetry in isokinetic muscle strength exists in men fencers,but not obvious in women fencers. (2)Weak muscles for fencers were hip extensor,knee flexor,especially in leading knee and ankle extensor.
ABSTRACT
The purposes of this study were: (1) to test healthy young adults' ankle plantar and dorsal flexor muscles strength, providing integrate data and scientific basis for sports training, sports injury and recovery. (2) to investigate the biomechanical rule of healthy adults' ankle plantar and dorsal flexor muscles. Methods: 70 college students (35males and 35 females) volunteerily took part in the test. An advanced Cybex-6000 dynamometer was employed. This test consisted of two sections, isokinetic concentric (CON) test and isometric test. Results: males and females adults' ankle dorsal flexor isometric peak torque (PT) increased and plantar flexor isometric PT decreased with the increasing of testing angle. CON PT decreased while the test angle velocities increased. Plantar flexor PT were higher than corresponding dorsal flexor in two tests ( P
ABSTRACT
Objective To explore the correlation between the strength of trunk flexors and extensors obtained by isometric and isokinetic concentric tests. Methods The strength of trunk extensors and flexors were measured by isometric and isokinetic concentric tests during trunk flexion and extension in 50 healthy subjects, and the peak torque of flexion and extension (FPT and EPT) and the ratios of FPT/EPT were analyzed with correlation and regression analysis. Results The FPT and EPT of trunk flexors and extensors were positively correlated (r_F=0.827,P0.05, respectively), the regression equations of FPT and EPT were y