Figure 1.
Peak power output profiles (average for n = 6 subjects) for each exercise during the two experimental conditions: when exercise was 5 repetitions (open circles) and when exercise was 10 repetitions (filled circles).
Boxes represent mean of the peak power output for the first and the second half of a set of 10 repetitions. *significant difference (P<0.01) between the first and the second 5 repetitions. Values are means ± SD.
Figure 2.
Curves of the position-time of the encoder attached to the weight plates, and applied force-time on the force platform by one representative subject, during the second (solid line) and the tenth (dash line) repetition of a set of 10 repetitions.
This profile was similar for all subjects.
Table 1.
Effects of leg press exercise on adenine nucleotides, IMP, PCr, Cr, Pi and energy charge at rest and during exercise.
Table 2.
Effects of leg press exercise on nucleotide metabolite ratios at rest and during exercise.
Table 3.
Effects of leg press exercise on glycolytic intermediates at rest and during exercise.
Table 4.
Summary of measurements and estimations of average ATP production from anaerobic metabolism.
Table 5.
Average ATP turnover rate and average ATP utilisation per repetition in relation to unit of power and unit of work.
Figure 3.
Relative mean power output changes and muscle lactate concentration increases.
Individual relationships between the relative mean power output changes (expressed in percent of initial value) between the first and the last two repetitions of both experimental periods, and the muscle lactate concentration increases (3A) as well as with the final blood lactate concentration values (3B), during a set of 5 (open circles) and a set of 10 (filled circles) repetitions.
Figure 4.
Individual relationship between PCr changes (expressed in percent of initial value) and the changes in the relative average duration of the concentric phase of leg press exercise (expressed in percent of initial value) during a set of 5 (open circles) and a set of 10 (filled circles) repetitions.