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

Single Leg Hop Firm Surface Clinical Trial

Official title:

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

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT04502615
• Other study ID #: TeessideUni
• Status: Completed
• Phase: N/A
• Start date: March 3, 2020
• Est. completion date: December 10, 2021

Study information

• Verified date: April 2022
• Source: Teesside University
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial 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.

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).

Recruitment information / eligibility

• Status: Completed
• Enrollment: 20
• Est. completion date: December 10, 2021
• Est. primary completion date: December 10, 2021
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: Female
• Age group: 16 Years to 45 Years

Eligibility

Inclusion Criteria:

• Female

• Participate in a minimum of 3 hours sporting activity per week.

• Provided Informed Consent

• Must be over 16 years of age (16-45 years)

• No exclusion criteria

Exclusion Criteria:

• Not willing to provide informed consent

• Pregnant

• History of ACL injury or other knee pathology

• Significant lower limb pathology

• Previous lower limb fracture or surgery

• Lower Limb injury in last 3 months.

• Male

Related Conditions & MeSH terms

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

Intervention

Other:
• Sand
sand surface
• artificial grass
grass surface
• firm ground
firm surface

Locations

Country	Name	City	State
United Kingdom	Teesside University	Middlesbrough

Sponsors (1)

Lead Sponsor	Collaborator
Teesside University

Country where clinical trial is conducted

United Kingdom, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	knee abduction moment (N.m)	a combination of ground force and amount of knee valgus on landing	1 testing session (1 day)
Primary	knee valgus	angle at the knee on landing	1 testing session (1 day)
Primary	surface electromyography (sEMG) activity pre and post landing	muscle activity of quadriceps (vastus medialis, vastus lateralis), hamstrings (lateral and medial), gastroc (lateral head)	1 testing session (1 day)
Secondary	Anterior tibial translation	The amount of forward translation of the tibia when landing on the surface	1 testing session(1 day)