Joint-angle specific strength adaptations influence improvements in power in highly trained athletes

22 Sep 2016Matthew R. Rhe, Joseph G. Kenn, Mark D. Peterson, Drew Massey, R Ob Erto Si Mão, Pedro J. Marin, Mike Favero, Diogo Card Oz O, Darren Krein

Individuals in the quarter and full squat training groups improved significantly more at the specific depth at which they trained when compared to the other two groups (p < 0.05). Jump height and sprint speed improved in all groups (p < 0.05); however, the quarter squat had the greatest transfer to both outcomes. Conclusions. Consistently including quarter squats in workouts aimed at maximizing speed and jumping power can result in greater improvements.

Randomized Controlled Trial
2 effects
16 weeks
28 subjects

Reported Outcomes

CausesOutcomeCertainty

Quarter Squat Selfcare risk & protective factor

Running speed Musculoskeletal outcome
Minor increase risk of Running speed
Musculoskeletal system

Moderate evidence
11.0%

Strength Training Selfcare risk & protective factor

Running speed Musculoskeletal outcome
Minor increase risk of Running speed
Musculoskeletal system

Low evidence
1.5%