NCT04502615

Effect of Sand on Knee Load and Muscle Activity During a Single Leg Landing Task

Effect of Sand on Knee Load and sEMG Activity During a Single Leg Landing Task: Implications for ACL Prevention and Rehabilitation

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 20 (actual)
• Sponsor: Teesside University · Academic / Other
• Sex: Female
• Age: 16 Years – 45 Years
• Healthy volunteers: Accepted

Summary

This study evaluates the effect of different surfaces on the load experienced by the knee when landing from a single leg hop. A sand, pliable grass and firm (hard floor) surface will be compared when hopping from a 30 cm height. Each subject will complete 5 hops on each surface in a random order. The muscle activity in selected muscles of the lower limb will also be investigated to see how this differs in the landing leg, when landing on the different surfaces.

Detailed description

The aim of this study is twofold: 1) To investigate the effect of sand on landing kinematics and kinetics at the knee joint when performing a single leg jump landing task (dominant leg), comparing sand with a firm surface and pliable grass control. 2) To investigate the sEMG activity of the hamstring, quadriceps and gastrocnemius muscles of the dominant leg during the jump landing task on these different surfaces (from take off through to terminal knee flexion at the end of the landing phase).

Conditions

• Single Leg Hop Sand Surface
• Single Leg Hop Grass Surface
• Single Leg Hop Firm Surface

Interventions

Type	Name	Description
OTHER	Sand	sand surface
OTHER	artificial grass	grass surface
OTHER	firm ground	firm surface

Timeline

• Start date: 2020-03-03
• Primary completion: 2021-12-10
• Completion: 2021-12-10
• First posted: 2020-08-06
• Last updated: 2022-04-27

Locations

1 site across 1 country: United Kingdom