Functional and Morphological Characteristics of Neck Muscles in Acrobatic Skydivers

Functional and Morphological Characteristics of Neck Muscles in Acrobatic Skydivers: an Observational Prospective Cohort Study

An observational cohort study, following the Strengthening the Reporting of Observational Studies in Epidemiology(STROBE) guidelines.

Two groups will be examined, a group composed by spanish acrobatic skydivers and a control group composed by general physically active population(GPAP).

Study Overview

• Status: Unknown
• Conditions: Neck Muscle Issue; Sternocleidomastoid; Contracture; Deltoid Muscle Strain
• Intervention / Treatment: Behavioral: Observation

Detailed Description

Two groups will be examined for veryfing the morfology and the function of neck muscles.

The profesional group composed by spanish acrobatic skydivers and a general group composed by general physically active population(GPAP). Both groups are matched at known confounder outcomes such as: physical activity level, age, sex, body weight and history of neck pain. Frequency matching will be carried out, subjects will be matched on known confounders.

• Study Type: Observational
• Enrollment (Anticipated): 40

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: No older than 60 years (Child, Adult)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

• Sampling Method: Non-Probability Sample

Study Population

Participants with a high level of physical activity and actualy involved in skydiving practices.

Description

Inclusion Criteria:

• pain-free in the neck area in the last three months
• didn't actually take any drugs that can interfere with muscle strength

Exclusion Criteria:

• participants that not mached with the skydivers caracteristics

Study Plan

How is the study designed?

Number of groups / cohorts

2

Cohorts and Interventions

Group / Cohort	Intervention / Treatment
Profesional acrobatics; Profesional Acrobatic Skyedivers as the cort group	Behavioral: Observation; Verification of morfology and functionality of neck muscles
General active participations; Adults with meched caracteristics with the profesional acrobatics

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Anticipatory postural adjustment	Electromyographic test in ms.The myoelectric signal will be recorded by using mDurance R system (mDurance Solutions SL, Granada). The electrodes used will be pre-gelled Ag/AgCl with a diameter of 10mm and an interelectrode distance of 20mm.	10 minutes
Isometric cervical strength	Measured in newton with heandheld Dynamometer (model 001165, Lafayette Instrument Company)	10 minutes
Neck flexor and extensor endurance	Measures in seconds with a stopwatch	10 minutes

Collaborators and Investigators

• Sponsor: Universidad de Murcia

Study record dates

Study Major Dates

• Study Start (Anticipated): March 3, 2021
• Primary Completion (Anticipated): April 30, 2021
• Study Completion (Anticipated): May 30, 2021

Study Registration Dates

• First Submitted: March 2, 2021
• First Submitted That Met QC Criteria: March 4, 2021
• First Posted (Actual): March 5, 2021

Study Record Updates

• Last Update Posted (Actual): March 11, 2021
• Last Update Submitted That Met QC Criteria: March 8, 2021
• Last Verified: March 1, 2021

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Joint Diseases; Musculoskeletal Diseases; Muscular Diseases; Contracture
• Other Study ID Numbers: CE102001

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No