Facebook
Twitter
LinkedIn
Email
 |
Checking for direct PDF access through Ovid | |
Excerpt
This study investigated the effects of repeated maximal isokinetic voluntary eccentric exercise (MAX) on total work and maximal isometric force(MIF). Twenty-four healthy, active males (22.9 ± 2.3 yrs, 173.6± 6.9 cm, 68.2 ± 5.1 kg), served as subjects. Subjects were randomly assigned into a control group (n=12) and an exercise group (n=12). The initial exercise (MAX1) was 3 × 10 reps of MAX on the non-dominant elbow flexors with Cybex 6000 at a speed of 60 ° /sec. The exercise group performed the same exercise 3 days (MAX3) and 6 days (MAX6) after MAX1. MIF was measured before and after each eccentric exercise (MAX1, MAX3, and MAX6) as well as 9 days after MAX1. The MIF of the control group was assessed prior to and immediately, 3, 6, as well as 9 days after MAX1. No significant differences in MIF were found between the two groups. There was a significant drop in total work through 3 exercises (MAX1=2409 J, MAX3=1508 J, MAX6=1819 J) for the exercise group. Moreover, the MIF decreased 43%, 22%, and 28% immediately after MAX1, MAX3, and MAX6, respectively. These decreased values were positively correlated with total work performed (r=0.85). Conclusions: 1. Repeated maximal eccentric exercise during DOMS was only 63% and 76% of the initial total work. This information may serve as a reference for coaches who must prescribe a training load for athletes during DOMS. 2. There was a direct positive correlation between the amount of total work and the strength decrement measured immediately after exercise. Therefore, too much intense exercise before competition may negatively effect performance.
