The influence of a strength-sprint training sequence on multi-joint power output.
The purpose of this study was to determine whether adaptation to single- versus multi-joint strength training and sprint training was different and whether sequencing strength prior to sprint training was beneficial for increasing power. Thirty-two untrained males were assigned to control (C), sprint-sprint (SS), multi-joint (MJS), or single-joint (SJS) strength-sprint groups. Subjects were tested before training, after 8 wk of strength or sprint training, and after an additional 6 wk of sprint training. By mid-training both SJS and MJS increased 10 repetition maximum strength, but this was not transferable to isometric or isokinetic strength or rate of torque development. SS showed no improvement in these variables. All training groups increased cycle ergometer power output by 8 wk and had similar fiber hypertrophy with no EMG changes. Subsequent sprint training continued to increase maximum power with no further hypertrophy. Tibial nerve conduction velocity increased in all training groups. These results indicate little difference in adaptation to single- and multi-joint strength training. Strength or power improvements caused by training in these models does not transfer to isometric or isokinetic movements. Further, sequenced strength-spring training provided no additional power gain over sprint training alone.
Sleivert
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GG
School of Physical Education, University of Victoria, BC Canada. Gsleivert@pooka.otago.ac.nz
Backus
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RD
Wenger
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HA
D000222:Adaptation, Physiological; D000328:Adult; D000843:Ankle Joint / Q000502:physiology; D004576:Electromyography; D016552:Ergometry; D006621:Hip Joint / Q000502:physiology; D006801:Humans; D006984:Hypertrophy; D007537:Isometric Contraction; D007596:Joints / Q000502:physiology*; D007719:Knee Joint / Q000502:physiology; D007866:Leg; D008297:Male; D009119:Muscle Contraction; D018485:Muscle Fibers, Skeletal / Q000648:ultrastructure; D018482:Muscle, Skeletal / Q000294:innervation / Q000502:physiology*; D009431:Neural Conduction; D012399:Rotation; D012420:Running / Q000193:education / Q000502:physiology*; D013979:Tibial Nerve / Q000502:physiology; D014891:Weight Lifting / Q000193:education / Q000502:physiology*