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The effect of endurance exercise on muscle force generating capacity of the lower limbs
Journal of Science and Medicine in Sport
  • David J Bentley, Southern Cross University
  • Shi Zhou, Southern Cross University
  • Allan J Davie, Southern Cross University
Document Type
Publication Date
Peer Reviewed
The purpose of this study was to investigate the recovery of muscle force generating capacity (FGC) of the lower limbs following a session of cycle exercise (CE). Fourteen male cyclists (mean ± SD age 25± 4 yrs and V̇O2max 65.8 ± 5−1min−1) performed tests assessing lower limb muscle FGC at rest (pre-test). as well as 6 and 24 hrs following CE performed on a mechanically-braked cycle ergometer. The CE consisted of 30 min at a workload corresponding to the lactate (Dmax) threshold (±15 W), and four 60 s rides at 120 % V̇O2max with one min rest between each ride. At the completion of the CE a 6 or 24 hr recovery period was initiated, after which, each subject's muscle FGC was measured. The analysis of lower limb muscle FGC included, (1) 6 s all-out cycle test; (2) a maximal isokinetic leg extension at 60, 120 and 180°·s−1; and (3) a maximal concentric squat jump. Statistical analysis showed that compared to pre-test levels, a significant reduction in both isokinetic peak torque at 60°·s−1 and isoinertial maximum force occurred after 6 hrs of recovery. Although not significant, reductions also occurred at 6 hrs of recovery in isokinetic peak torque at 120 and 180°·s−1, as well as maximum rate of force development (RFD) during the squat jumps. No significant differences were observed between isokinetic peak torque, maximum force or RFD pre-test and following the 24 hr recovery period, indicating these tests had returned to normal by this time. No significant differences were found between peak power (PP) during the 6 s cycle test, pre-test and following either 6 or 24 hrs of recovery. These findings confirm earlier research that maximal voluntary strength is reduced for at least 6 hours following exhaustive dynamic exercise. The reduction in muscle FGC should be considered when resistance training is scheduled after endurance exercise.
Citation Information

Bentley, DJ, Zhou, S & Davie, AJ 1998, 'The effect of endurance exercise on muscle force generating capacity of the lower limbs', Journal of Science and Medicine in Sport, vol. 1, no. 3, pp. 179-188.

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