Power Testing: Crossover Hop Test

The Crossover Hop Test is an evaluation used to assess an athlete's ability to maintain balance and coordination during rapid lateral movements. 

The Crossover Hop Test is also a useful tool for assessing an individual's lower extremity strength, power, agility, and neuromuscular control, as well as identifying any deficits or asymmetries that may increase the risk of injury. It can also be used to track progress and evaluate the effectiveness of interventions, such as rehabilitation exercises or sports-specific training programs.

Here are the general steps for performing the Crossover Hop Test:

Equipment needed:

• Hop MAT

Procedure:

1. Place the Hop MAT, or alternative measuring tool, along the ground. 
2. Have the client stand at the starting point on the outermost side of the Hop MAT or measuring device. 
3. Once set, instruct the client to adopt a balanced position on one leg, with their hands on hips - ideally the medial side of that leg should be facing toward the Hop Mat or measuring device.
4. Queue the client to hop three times - crossing over the Hop MAT or measuring tool, first medially, then laterally and medially once again, all in quick succession on the same foot. Ensure the client sticks their landing at the conclusion of the final hop.
5. Mark the distance covered by measuring the distance at the point of the client’s heel.
6. Repeat the test on the other leg, starting with the opposite foot in front.

It is important to ensure that the individual is physically capable of performing the test and that they have been properly warmed up beforehand to minimize the risk of injury. Additionally, it is recommended to provide clear instructions and demonstrations of the test to ensure that the individual understands the proper technique and form.

References:

1. Bressel, E., Yonker, J. C., Kras, J., Heath, E. M., & Buckley, T. A. (2007). Jumping and landing techniques in elite women's volleyball. Journal of Sports Science & Medicine, 6(2), 182-188.
2. Plisky, P. J., Rauh, M. J., Kaminski, T. W., & Underwood, F. B. (2006). Star Excursion Balance Test as a predictor of lower extremity injury in high school basketball players. Journal of Orthopaedic & Sports Physical Therapy, 36(12), 911-919.
3. Wikstrom, E. A., Tillman, M. D., Kline, K. J., & Borsa, P. A. (2006). Gender and limb differences in dynamic postural stability during landing. Clinical Journal of Sport Medicine, 16(4), 311-315.