Related Experiment Video
Updated: Feb 28, 2026
Muscle Imbalances: Testing and Training Functional Eccentric Hamstring Strength in Athletic Populations
Published on: May 1, 2018
Effects of squat training with different ranges of motion on muscle strength, jump performance, and change of
Takamichi Inoguchi1, Hiroki Homma2, Yukina Mochizuki1
1Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan.
Background:
This study aimed to examine the effects of short-term, high-load full squat (F-SQ) and half squat (H-SQ) training on muscle strength, jump performance, and change of direction in resistance-trained athletes.
Methods:
Thirty resistance-trained males (aged 19.4±0.8 years; height 170.6±6.0 cm; body mass 70.4±6.4 kg) were allocated to three groups: F-SQ, H-SQ, and control. The F-SQ and H-SQ groups performed squat training twice weekly for 3 weeks, with intensity progressively increasing from 85% to 90% of one-repetition maximum (1RM). Post-intervention, participants underwent 1RM, pro-agility, and vertical jump tests.
Results:
The H-SQ group exhibited significantly higher training volume (P=0.001), while the F-SQ group achieved greater concentric work volume (P=0.005) and lifting velocity (P=0.017-0.048). A significant interaction was observed for F-SQ 1RM (P=0.025), with both the F-SQ (P=0.032) and H-SQ (P=0.024) groups showing significant improvements. No significant interaction was found in the pro-agility test (P=0.225), although a significant main effect of time was noted (P=0.001). The H-SQ group demonstrated slightly larger effect sizes (ES=0.50[95%CI: -0.94, 0.91]).
Conclusions:
Although training volume and quality differed between protocols, both F-SQ and H-SQ training yielded comparable improvements in muscle strength and performance, with no significant between-group differences.
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