Single-Limb 6 Meter Hop Test for Time
ICF category	Measurement of activity limitation, jumping
Description	The amount of time a patient needs to hop on 1 limb a distance of 6-m as quickly as possible.
Measurement method	The patient stands on the uninvolved limb, with the toes on the starting line. After the examiner’s command of “Ready, set, go,” timing begins with a stopwatch accurate to 0.01 seconds. The patient hops the 6-m distance as quickly as possible with the test limb. The testing stops when the subject crosses the 6-m finish line. The patient performs 2 practice hops and performs 2 recordable hops. Testing is repeated on the involved limb. Wearing a functional knee brace is recommended for all patients postinjury or less than 1 year postsurgery.
Nature of variable	Continuous
Units of measurement	Seconds
Measurement properties	Test-retest reliability Healthy individuals: ICC2,3 = 0.93, SEM = 0.06 s, MDC95 = 0.17 s136 Mean time: 1.82–1.86 s LSI reliability in patients with ACL reconstruction129 ICC2,1 = 0.82 MDC90 = 12.96% Range of mean LSI at 16 weeks post-ACL reconstruction = 81.7%–83.2% Mean LSI at 22 weeks post-ACL reconstruction = 89.6%