Effects of squat training with different ranges of motion on muscle strength, jump performance, and change of direction ability.

The half squat group achieved significantly higher training volume than the full squat group.

• Thirty resistance-trained males were allocated to F-SQ, H-SQ, and control groups
• Training was performed twice weekly for 3 weeks with intensity progressively increasing from 85% to 90% of 1RM
• The H-SQ group exhibited significantly higher training volume (P=0.001)

The full squat group achieved greater concentric work volume and lifting velocity compared to the half squat group.

• The F-SQ group achieved greater concentric work volume (P=0.005)
• The F-SQ group achieved greater lifting velocity (P=0.017-0.048)
• These differences reflect the distinct mechanical demands of each squat depth protocol

Both full squat and half squat training produced significant improvements in 1RM strength.

• A significant interaction was observed for F-SQ 1RM (P=0.025)
• The F-SQ group showed significant improvement in 1RM (P=0.032)
• The H-SQ group also showed significant improvement in 1RM (P=0.024)
• No significant between-group differences in 1RM improvement were reported

Both squat training protocols improved change of direction ability, but there was no significant interaction between groups.

• No significant interaction was found in the pro-agility test (P=0.225)
• A significant main effect of time was noted (P=0.001), indicating overall improvement across groups
• The H-SQ group demonstrated slightly larger effect sizes (ES=0.50 [95%CI: -0.94, 0.91])

Despite differing training volume and quality, full squat and half squat protocols produced comparable improvements in muscle strength and athletic performance.

• Participants were resistance-trained males aged 19.4±0.8 years, height 170.6±6.0 cm, body mass 70.4±6.4 kg
• Training duration was 3 weeks at high loads (85–90% 1RM)
• No significant between-group differences were found for any outcome measure
• Both vertical jump performance and change of direction showed comparable responses between groups