Vertical Jump Test
- The patient is in an upright position with his hands placed behind his back while standing on one leg
- The patient then quickly bends his knee as much as desired and immediately jumps upwards in an attempt to jump as high as possible
Outcome: A computerized system serving as a contact mat makes it possible to measure the flight time. The system then converts the flight time into jump height in centimeters. As a cheap alternative, the app “My Jump 2” can be used as a valid tool to measure jump height (Haynes et al. 2019)
Hop For Distance
- The patient stands on the test leg with the toes against a mark and then hops as far as possible while landing on the same leg. A free leg swing is allowed and the hands are placed behind the back
- The landing foot has to be kept in place, so no extra hops are allowed until the examiner has registered the landing position
Outcome: The distance is measured in centimeters from the toes at the push-off to the heel where the patient landed
Side Hop
- The patient stands on the test leg with the hands behind the back
- Then the patient jumps from side to side between 2 parallel strips of tape placed 40 centimeters apart on the floor
- The patient is instructed to jump as many times as possible during a period of 30 seconds
Outcome: The number of successful jumps performed is counted without touching the tape is recorded. Touching the tape is recorded as an error and if more than 25% of the jumps are erroneous, another 30 second trial is performed after a 3 minute break.
The leg symmetry index (LSI) can be calculated by dividing the number of jumps of the involved leg throught the number of jumps of the uninvolved leg multiplied by 100.
(LSI = (Reps of involved limb / reps of involved limb) * 100)
|
Study |
Reliability | Sn | Sp | LR+ | LR- |
| Gustavsson et al. (2006) | Inter-rater ICC = 0.85-0.97 | NA | NA | NA |
NA |
