Ignite Creation Date:
2024-05-06 @ 3:49 PM
Last Modification Date:
2024-10-26 @ 1:57 PM
Study NCT ID:
NCT04768088
Status:
NOT_YET_RECRUITING
Last Update Posted:
2021-02-24
First Post:
2021-01-29
Brief Title:
Training of Falling Techniques on Landing Mechanics
Sponsor:
University of Wyoming
Organization:
University of Wyoming
Study Overview
Official Title:
One-week Training of Falling Techniques on Landing Biomechanics Associated With Anterior Cruciate Ligament Loading
Status:
NOT_YET_RECRUITING
Status Verified Date:
2021-02
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
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
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
Detailed Description:
Fifteen male and 15 female recreational athletes between 14 and 17 years old and 15 male and 15 female recreational athletes between 18 and 30 years old will be recruited to complete the study These age ranges are selected as they show significantly higher injury rates compared to other age ranges and allow us to account for maturational effects Participants younger than 18 years old will be primarily recruited through local sports clubs Adult participants will be primarily recruited among the students at the University of Wyoming
The researchers who will have direct contact with participants will be fully vaccinated against COVID-19 and wear surgical masks Participants and researchers must pass the Centers for Disease Control and Prevention Facilities COVID-19 Screening prior to each training session and assessment Participants will be separated by a minimum of 6 feet when multiple participants are trained at the same time Only one participant will be tested at a time during the assessment The equipment will be sanitized before and after each use
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 The post-training assessment will be performed within three days after the one-week training The retention assessment will be performed within three days after the two-week break The one-week falling training will include the forward lateral and vertical landing directions and mats with different thicknesses Participants landing mechanics will be evaluated during the post-training and retention assessments which will include the forward lateral and vertical landing directions as well as the diagonal landing direction as the novel transfer task Any injuries that occur during the training and assessments will be documented
For both post-training and retention assessments participants will wear spandex clothes and standard running shoes provided by the researchers After a warm-up protocol retroreflective markers will be placed on each participants 7th cervical vertebra and bilateral acromioclavicular joints greater trochanters anterior thighs lateral and medial femoral epicondyles tibia tuberosities inferior shanks lateral and medial malleolus first toes first and fifth metatarsal heads and calcaneus Motion data will be captured using eight Bonita 10 cameras at 160 Hz Vicon Motion Systems Ltd Oxford UK Ground reaction force data will be measured using one FP4060-10 force platform at 1600 Hz Bertec Corporation Columbus OH USA Kinematic and force data will be collected simultaneously by the Vicon Nexus software
After a static trial participants will perform a minimum of two practice trials and three recorded trials of single-leg soft landings and falling in the forward lateral vertical and diagonal directions The forward and vertical directions were included in our previous study The lateral direction is added to increase the challenges associated with the frontal plane to load the knee The diagonal direction is incorporated as the transfer task which imposes challenges to both the sagittal and frontal planes as a more complex movement The order of the testing legs left or right landing directions forward lateral vertical or diagonal and landing techniques soft-landing or falling techniques will be randomized A 05-inch mat with minimal effects of impact absorption will cover the concrete floor for the falling conditions
A lower extremity model will be established to calculate the three-dimensional internal knee joint resultant moments using the inverse dynamic approach and three-dimensional knee joint angles characterized by the Cardan angles as previously described The independent variables are the two landing techniques soft-landing and falling and two assessments post-training and retention For each landing direction and each leg each landing variable will be compared among the two landing techniques and two assessments using repeated-measures analysis of variables ANOVA Significant interactions of ANOVA will be followed by pairwise comparisons
The researchers who will have direct contact with participants will be fully vaccinated against COVID-19 and wear surgical masks Participants and researchers must pass the Centers for Disease Control and Prevention Facilities COVID-19 Screening prior to each training session and assessment Participants will be separated by a minimum of 6 feet when multiple participants are trained at the same time Only one participant will be tested at a time during the assessment The equipment will be sanitized before and after each use
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 The post-training assessment will be performed within three days after the one-week training The retention assessment will be performed within three days after the two-week break The one-week falling training will include the forward lateral and vertical landing directions and mats with different thicknesses Participants landing mechanics will be evaluated during the post-training and retention assessments which will include the forward lateral and vertical landing directions as well as the diagonal landing direction as the novel transfer task Any injuries that occur during the training and assessments will be documented
For both post-training and retention assessments participants will wear spandex clothes and standard running shoes provided by the researchers After a warm-up protocol retroreflective markers will be placed on each participants 7th cervical vertebra and bilateral acromioclavicular joints greater trochanters anterior thighs lateral and medial femoral epicondyles tibia tuberosities inferior shanks lateral and medial malleolus first toes first and fifth metatarsal heads and calcaneus Motion data will be captured using eight Bonita 10 cameras at 160 Hz Vicon Motion Systems Ltd Oxford UK Ground reaction force data will be measured using one FP4060-10 force platform at 1600 Hz Bertec Corporation Columbus OH USA Kinematic and force data will be collected simultaneously by the Vicon Nexus software
After a static trial participants will perform a minimum of two practice trials and three recorded trials of single-leg soft landings and falling in the forward lateral vertical and diagonal directions The forward and vertical directions were included in our previous study The lateral direction is added to increase the challenges associated with the frontal plane to load the knee The diagonal direction is incorporated as the transfer task which imposes challenges to both the sagittal and frontal planes as a more complex movement The order of the testing legs left or right landing directions forward lateral vertical or diagonal and landing techniques soft-landing or falling techniques will be randomized A 05-inch mat with minimal effects of impact absorption will cover the concrete floor for the falling conditions
A lower extremity model will be established to calculate the three-dimensional internal knee joint resultant moments using the inverse dynamic approach and three-dimensional knee joint angles characterized by the Cardan angles as previously described The independent variables are the two landing techniques soft-landing and falling and two assessments post-training and retention For each landing direction and each leg each landing variable will be compared among the two landing techniques and two assessments using repeated-measures analysis of variables ANOVA Significant interactions of ANOVA will be followed by pairwise comparisons
Study Oversight
Has Oversight DMC:
None
Is a FDA Regulated Drug?:
False
Is a FDA Regulated Device?:
False
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?:
None