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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT04744246
Other study ID # HE20208
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date September 7, 2020
Est. completion date November 1, 2020

Study information

Verified date February 2021
Source North Dakota State University
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Army ROTC Cadets who are currently enrolled in Military Science courses will be asked to participate in this experimental research design. A total of 30 healthy cadets consisting of approximately 24 males and six females will be recruited, as this will provide an accurate representation of the overall Army demographics with 17% being female. Paperwork: After providing consent, participants age and gender will be documented, and height and weight will be measured and documented. Participants will complete a modified version of the Modified Oswestry Low Back Pain Disability Questionnaire, which has been adjusted to be more specific to the military population. The questionnaire will be filled out indicating the cadet's current level of pain. They will then complete the same questionnaire indicating their pain within the last year. Protocol: First, the skin will be prepared and surface electromyography (EMG) electrodes will be placed. Dynamic, surface EMG data will be obtained of the gluteus medius, gluteus maximus, erector spinae, rectus femoris, and biceps femoris muscles in accordance with SENIAM (Surface Electromyography for the Non-Invasive Assessment of Muscles) guidelines. Skin preparatation will consist of trimming hair if the skin surface at which the electrodes have to be placed is covered with hair. Next, the skin will be cleaned with alcohol. The skin will be allowed to dry prior to electrode placement. Lastly, skin will be abraded to reduce impedance. Following electrode application, participants will complete five minutes of light activity on a bike or treadmill for warm-up. Next, in order to normalize the data, manual muscle tests will be performed for each of the six muscles being test. Then, participants will walk at a speed of four miles per hour for 10 seconds as a dynamic measurement for normalizing the data. After completion of the two normalization protocols, participants will complete a five kilometer (3.1 mile) walk on a treadmill at a speed of three miles per hour, with and without a 35 lb. load carried in a traditional rucksack. The load conditions will be randomized and counterbalanced in order to mitigate effects of fatigue, and the conditions will be performed in two separate sessions (separated by 24-48 hours).


Recruitment information / eligibility

Status Completed
Enrollment 30
Est. completion date November 1, 2020
Est. primary completion date October 29, 2020
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years to 35 Years
Eligibility Inclusion Criteria: - current enrollment in military science courses and member of Army ROTC Exclusion Criteria: - current musculoskeletal injuries

Study Design


Related Conditions & MeSH terms


Intervention

Other:
load carriage
35 pound load carried on the back

Locations

Country Name City State
United States North Dakota State University Fargo North Dakota

Sponsors (1)

Lead Sponsor Collaborator
North Dakota State University

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary EMG change over time with Load carriage muscle activation of rectus femoris, gluteus medius, gluteus maximus, biceps femoris, rectus abdominis, and erector spinae with a 35 lb load 2 days
Primary EMG change over time without load muscle activation of rectus femoris, gluteus medius, gluteus maximus, biceps femoris, rectus abdominis, and erector spinae without a 35 lb load 2 days
Primary Modified version of Modified Oswestry Disability Index Current Pain answers to back pain questionnaire for current level of pain 1 day
Primary Modified version of Modified Oswestry Disability Index Pain in Last Year answers to back pain questionnaire for any pain within the last year 1 day
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