Hop & Stop Test

The Hop & Stop test is a quantitative field test that is designed to measure force production, force absorption, and asymmetries of the lower body.  Originally created by Dr. Paul Juris for the general fitness population back in the early 1990’s, it has since been applied to the world of sport as a successful injury prevention screen test.

Here is the original abstract of the article published in the JOSPT: A Dynamic Test of Lower Extremity Function Following Anterior Cruciate Ligament Reconstruction and Rehabilitation Paul M. Juris, Edward M. Phillips, Chantell Dalpe, Christina Edwards, Robert S. Gotlin, Daniel J. Kane It is essential to assess the functional status of patients with surgically reconstructed and rehabilitated anterior cruciate ligaments prior to discharge. This study established a testing paradigm for functional force production and absorption. Data were obtained from 100 healthy subjects for maximal hops, controlled leaps, and hopping and leaping symmetry. Only 10% of symptomatic patients met maximal hopping criteria, while 15% achieved controlled leaping norms. Ninety-five percent of these patients failed to reach both hopping and leaping symmetry norms. Asymptomatic patients were 63% successful in meeting hopping criteria, and 57% were successful in meeting leaping criteria. Hop symmetry and leap symmetry were achieved at rates of 70% and 60%, respectively. The performance of both groups fell significantly below that of normal subjects (p < .05). Data suggest that this protocol does accurately assess functional and dysfunctional knees, and that force absorption may be more critical than force production in the determination of functional capacity. J Orthop Sports Phys Ther. 1997;26(4):184-191.

 

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