A influência do comprimento do fêmur e da tíbia nos valores reais da contração voluntária isométrica máxima no aparelho de Leg Press 45º: um estudo piloto

Abstract

The objective of this pilot study was to evaluate the influence of femoral and tibial length on the actual values of maximal isometric voluntary contraction (CVIM) in the 45º Leg press (LP45º). The study included 15 volunteers aged between 20 and 47 years old who practiced bodybuilding for at least 6 months. Among the anthropometric data measured, the bone lengths were collected through a pachymeter, in addition to the test of maximum voluntary isometric contraction (CVIM) measured in the DinPro dynamometer (CEFISE, SP, Brazil) coupled to the LP45º equipment. A maximum force for 5 seconds of CVIM was performed to obtain the values in kilogram force (Kgf). The descriptive data related to the correlations were analyzed using the software SPSS - IBM 22.0 for Windows (USA), with a significance level of p≤0.05. The results showed that between the internal and external loads that interfere in the generation of force the lengths of the femur and the tibia did not present statistically significant influences in the results of the CVIM strength of the participants. Therefore, this pilot study demonstrated that the size of the femur and the tibia do not appear to influence the isometric strength responses of lower limbs of young adults.