Training of Falling Techniques on Landing Mechanics

NCT04768088 | Unknown

• 1 other identifier: 20210219BD02958
• Study Type: interventional
• Target: 60
• Locations: 1 country
• Sites: 1

Brief Summary

The overall purpose of this study is to quantify the effect and retention of one-week training of falling techniques on landing biomechanics associated with anterior cruciate ligament (ACL) loading compared to soft-landing techniques in young recreational athletes. The secondary purpose is to assess the safety of the training program. Aim 1: To quantify the effect of one-week training of falling techniques on landing biomechanics during forward, lateral, vertical, and diagonal landings compared to soft-landing techniques. We hypothesize that falling techniques will result in increased knee flexion angles and decreased landing forces, knee abduction and internal rotation angles, and knee moments for all landing directions compared to soft-landing techniques immediately after the training. Aim 2: To assess the retention effects of the falling techniques on landing biomechanics compared to soft landings. We hypothesize that the effects of falling techniques on ACL loading variables will be more highly retained compared to soft-landing techniques two weeks after the training. Aim 3: To identify the safety of the training program. We hypothesize that participants can complete the training without suffering minor, moderate, or major injuries, while occasional minor bruises might be observed.

Conditions

Sports Injury; Orthopedic Disorder; Knee Injuries; Anterior Cruciate Ligament Injuries

Keywords

Biomechanics; Sports Medicine; Knee; Injury Prevention; ACL

Outcome Measures

Primary Outcomes (2)

• Peak vertical ground reaction forces during landings

  Increases in this variable have been shown to be associated with increased ACL loading

  Immediate after the training

• Peak vertical ground reaction forces during landings

  Increases in this variable have been shown to be associated with increased ACL loading

  Two weeks after the training

Secondary Outcomes (12)

• Peak knee flexion angles during landings

  Immediate after the training

• Peak knee flexion angles during landings

  Two weeks after the training

• Peak knee abduction angles during landings

  Immediate after the training

• Peak knee abduction angles during landings

  Two weeks after the training

• Peak knee internal rotation angles during landings

  Immediate after the training

Study Arms (1)

One-week training of falling techniques on landing biomechanics associated with ACL loading

EXPERIMENTAL

Participants will perform one-week training of single-leg falling techniques, a post-training assessment, a two-week break, and a retention assessment.

Other: Falling Training

Interventions

Falling Training OTHER

For the falling training, participants will be instructed to initially land softly with increased knee and hip flexion and then smoothly fall to the direction of the movement while transferring the weight from the feet to the hands and subsequently to the lateral trunk and hip. The training program includes three one-hour training sessions over a week with one or two days between two sessions. Each training session will begin with a warm-up protocol. Participants will progressively increase the task difficulty and decrease the thickness of the mat. For each training session, participants will perform a minimum of one successful practice trial for each task difficulty and each landing direction on the thicker mat and then complete a minimum of three successful practice trials for each task difficulty and landing direction on the thinner mat. The last training session involves falling on a 0.5-inch mat, which is the same as the surface for the post-training and retention assessments.

One-week training of falling techniques on landing biomechanics associated with ACL loading

Eligibility Criteria

• Age: 14 Years - 30 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Child (0-17), Adult (18-64)

You may qualify if:

• Between 14 and 30 years old.
• Participation in exercise and sports at least two times per week for a total of 2 hours per week.
• Having experience in playing sports that involved jump-landing activities. Sports experience is defined as currently playing sports at least one time per week at the time of testing or having played at high school, college, or club levels.

You may not qualify if:

• Having had major lower extremity or spinal injuries that have involved surgical treatment.
• Having had an injury that prevented participation in physical activity for more than two weeks over the previous six months.
• Possessing any other conditions that prevent him/her from participating at maximal effort in sporting activities.
• Having had training experience of falling techniques for ACL injury prevention.
• Allergies to adhesives.
• Pregnancy.

Sponsors & Collaborators

• University of Wyoming: lead

Study Sites (1)

University of Wyoming

Laramie, Wyoming, 82070, United States

Location

MeSH Terms

Conditions

Athletic Injuries; Musculoskeletal Diseases; Knee Injuries; Anterior Cruciate Ligament Injuries

Condition Hierarchy (Ancestors)

Wounds and Injuries; Leg Injuries

Study Officials

• Boyi Dai, Ph.D.

  University of Wyoming

  PRINCIPAL INVESTIGATOR

Central Study Contacts

Boyi Dai, Ph.D.

CONTACT

3077665423; bdai@uwyo.edu

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NA
• Masking: NONE
• Purpose: PREVENTION
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Model Details: Participants will perform one-week training of single-leg falling techniques, a post-training assessment, a two-week break, and a retention assessment. A pre-training assessment will not be performed, and a control group will not be included because it will be unsafe for participants to fall on a hard surface without proper training of falling techniques.

Study Record Dates

• First Submitted: January 29, 2021
• First Posted: February 24, 2021
• Study Start: January 1, 2022
• Primary Completion: December 31, 2024
• Study Completion: December 31, 2025
• Last Updated: February 24, 2021

Record last verified: 2021-02

Data Sharing

• IPD Sharing: Will share
• Shared Documents: STUDY PROTOCOL, SAP, ICF, ANALYTIC CODE
• Time Frame: After the study has been completed for a minimum of three years.
• Access Criteria: Everyone

Locations

US (1)