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

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

20 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-03-03

Study Completion Date

2021-12-10

Brief Summary

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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.

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Detailed Description

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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

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

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Randomised, repeated measures crossover design.

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Sand

Participants perform 5 single leg hops onto a Sand surface from a 30cm height

Group Type EXPERIMENTAL

Sand

Intervention Type OTHER

sand surface

Artificial grass

Participants perform 5 single leg hops onto a grass surface from a 30cm height

Group Type ACTIVE_COMPARATOR

artificial grass

Intervention Type OTHER

grass surface

Firm Ground

Participants perform 5 single leg hops onto a firm ground surface from a 30cm height

Group Type ACTIVE_COMPARATOR

firm ground

Intervention Type OTHER

firm surface

Interventions

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Sand

sand surface

Intervention Type OTHER

artificial grass

grass surface

Intervention Type OTHER

firm ground

firm surface

Intervention Type OTHER

Eligibility Criteria

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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)

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

Minimum Eligible Age

16 Years

Maximum Eligible Age

45 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

Yes