Discriminative ability of functional loading tests for adolescent jumper

Purdam, Craig, Cook, Jill, Hopper, Diana and Khan, Karim 2003, Discriminative ability of functional loading tests for adolescent jumper, Physical therapy in sport, vol. 4, no. 1, pp. 3-9.


Title Discriminative ability of functional loading tests for adolescent jumper
Author(s) Purdam, Craig
Cook, Jill
Hopper, Diana
Khan, Karim
Journal name Physical therapy in sport
Volume number 4
Issue number 1
Start page 3
End page 9
Publisher Elsevier Science
Place of publication Amsterdam, The Netherlands
Publication date 2003-02
ISSN 1466-853X
1873-1600
Keyword(s) Patellar tendinopathy
Exercise
Squat
Decline squat
Summary Objective: To investigate the reliability and validity of five squat-based loading tests that are clinically appropriate for jumper's knee. The loading tests were step up, double leg squat, double leg squat on a 25-degree decline (decline squat), single leg decline squat, and decline hop. Design: Cross-sectional controlled cohort. Subjects without knee pain comprised controls, those with extensor tendon pain comprised the jumper's knee group. Setting: Institutional athlete study group in Australia. Participants: Fifty-six elite adolescent basketball players participated in this study, thirteen comprised the jumper's knee group, fifteen athletes formed a control group. Intervention: Each subject performed each loading test for baseline and reliability data on the first testing day. Subjects then performed three days of intensive (6 h daily) basketball training, after which each loading test was reexamined. Main outcome measures: Eleven point interval scale for pain. Results: The tests that best detected a change in pain due to intensive workload were the single leg decline squat and single leg decline hop. This study found that decline tests have better discriminative ability than the standard squat to detect change in jumper's knee pain due to intensive training. The typical error for these tests ranged from 0.3 to 0.5, however, caution should be exercised in the interpretation of these reliability figures due to relatively low scores. Conclusions: The single leg decline squat is recommended in the physical assessment of adolescent jumper's knee. The decline squat was selected as the best clinical test over the decline hop because it was easier to standardise performance.
Language eng
Field of Research 110314 Orthopaedics
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2003, Elsevier Science Ltd.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30009442

Document type: Journal Article
Collection: School of Exercise and Nutrition Sciences
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