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1.
Article in English | WPRIM | ID: wpr-379137

ABSTRACT

The purpose of this study was to evaluate the fat-free mass (FFM) of the total body, the upper limbs, and the lower limbs in healthy subjects and basketball players obtained by the new 8-electrode segmental bioelectrical impedance analysis (S-BIA) and to compare the results with the FFM obtained by DXA. The participants were 30 healthy subjects (15 men and 15 women) aged 24.9±3.5 years old and 15 female basketball players aged 23.1±3.1 years old. In the healthy subjects, positive correlations (p<0.001) were observed between the FFM obtained by S-BIA and DXA of the total body (r=0.973), the upper limbs (r=0.956), and the lower limbs (r=0.954). Similarly, in the basketball players, positive correlations (p<0.001, p<0.01) were observed between the FFM obtained by S-BIA and DXA of the total body (r=0.943), the upper limbs (r=0.743), and the lower limbs (r=0.934). The results suggest that the new 8-electrode S-BIA is a valid and convenient method for analyzing body composition of the total body and the body segments in healthy subjects and athletes.

2.
Article in English | WPRIM | ID: wpr-379120

ABSTRACT

15 healthy elderly adults (68.6±4.5 years old) participated in this study and were chosen at random for either super low-velocity repetition training (SLT : n=7) or general low-velocity repetition training (GLT : n=8). All subjects performed machine training leg work twice a week for 6 months. Training contents of SLT and GLT were programmed as follows : SLT (Method : 4 seconds of lifting and 6 sec of lowering) and GLT (Method : 2 sec of lifting and 2 sec of lowering). Muscular strength testing was adopted during isometric knee extension using Cybex6000, and body composition was measured by DXA method. As a result, increases in peak torque values and 5 sec average torques value were significantly different in both groups, pre- and post-training (p<0.05). However, there was no significant difference between the two groups. Fat mass significantly decreased during post-training in both groups (p<0.05); however, there was no significant difference between the groups. SLT showed that increases in maximum muscular strength and endurance were similar to GLT. Thus, low-intensity and low-velocity repetition training is suggested as an effective method for elderly adults to increase lower limb muscular strength.

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