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

NCT04502615 | Completed

• 1 other identifier: TeessideUni
• Study Type: interventional
• Target: 20
• Locations: 1 country
• Sites: 1

Brief 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.

Conditions

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

Keywords

Sand; knee valgus; knee abduction moment; electromyography

Outcome Measures

Primary Outcomes (3)

• knee abduction moment (N.m)

  a combination of ground force and amount of knee valgus on landing

  1 testing session (1 day)

• knee valgus

  angle at the knee on landing

  1 testing session (1 day)

• 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 Outcomes (1)

• Anterior tibial translation

  1 testing session(1 day)

Study Arms (3)

Sand

EXPERIMENTAL

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

Other: Sand

Artificial grass

ACTIVE COMPARATOR

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

Other: artificial grass

Firm Ground

ACTIVE COMPARATOR

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

Other: firm ground

Interventions

Sand OTHER

sand surface

Sand

artificial grass OTHER

grass surface

Artificial grass

firm ground OTHER

firm surface

Firm Ground

Eligibility Criteria

• Age: 16 Years - 45 Years
• Gender Eligibility Details: most be female to be eligible for the study
• Healthy Volunteers: Yes
• Age Groups: Child (0-17), Adult (18-64)

You may qualify if:

• 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)

You may not qualify if:

• 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

Sponsors & Collaborators

• Teesside University: lead

Study Sites (1)

Teesside University

Middlesbrough, TS1 3BA, United Kingdom

Location

Related Publications (1)

• Richardson MC, Evans W, Chesterton P, Wright M. The effects of a 6-week sand- vs. Land-based jump training programme on frontal plane knee angle and jump performance in adolescent female football players. J Sports Sci. 2025 Mar;43(6):523-535. doi: 10.1080/02640414.2025.2465946. Epub 2025 Feb 18.

  PMID: 39964088 DERIVED

MeSH Terms

Interventions

Sand

Intervention Hierarchy (Ancestors)

Soil; Complex Mixtures; Geologic Sediments; Geological Phenomena; Physical Phenomena; Environment; Ecological and Environmental Phenomena; Biological Phenomena; Environment and Public Health

Study Officials

• Mark Richardson, MSc

  Teesside University

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: CROSSOVER
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Principal Investigator

Model Details: Randomised, repeated measures crossover design.

Study Record Dates

• First Submitted: July 30, 2020
• First Posted: August 6, 2020
• Study Start: March 3, 2020
• Primary Completion: December 10, 2021
• Study Completion: December 10, 2021
• Last Updated: April 27, 2022

Record last verified: 2022-04

Locations

GB (1)