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- Title
Sex-related differences in isokinetic muscular contraction.
- Authors
Borda, Ileana Monica; Ungur, Rodica; Irsay, Laszlo; Onac, Ioan; Ciortea, Viorela
- Abstract
Background. The ability of muscle to develop torque depends on many factors, such as muscular mass, fibre type, activation characteristics, factors that are different enough in males and females. Aims. To analyse the differences between the two genders concerning isokinetic muscular contraction in knee extensor and flexor muscles. Methods. 22 healthy volunteers (10 males and 12 females) were included in this study. After a 5-minute warm-up period, subjects had to perform an isokinetic muscle testing protocol on a Gymnex Iso 2 isokinetic dynamometer, consisting of 30 maximal reciprocal isokinetic contractions (knee flexion - extension) on the dominant lower limb, at 180o/sec velocity. Analysed parameters (for extension and flexion) were: peak torque, work, power, muscle endurance index. Parameters were analysed in absolute values and relative to body mass. Results. Significantly higher absolute values (p<0.05) were registered in men than in women for peak torque, work and power, for both extension and flexion. When parameters were calculated relative to body mass, statistical significance was no longer met (p>0.05). On the other hand, significantly faster fatigue with lower values of the muscular endurance index (p<0.05) were registered in men than in women. Conclusions. Muscle contraction ability and muscle fatigue are gender-specific, which could be a possible explanation for the different predisposition for certain injuries in males and females.
- Subjects
SEX differences (Biology); MUSCLE growth; ISOKINETIC exercise; MUSCLE contraction; MUSCLE fatigue
- Publication
Palestrica of the Third Millennium Civilization & Sport, 2014, Vol 15, Issue 4, p286
- ISSN
1582-1943
- Publication type
Article