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).
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
40
Verification of morfology and functionality of neck muscles
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.
Time frame: 10 minutes
Isometric cervical strength
Measured in newton with heandheld Dynamometer (model 001165, Lafayette Instrument Company)
Time frame: 10 minutes
Neck flexor and extensor endurance
Measures in seconds with a stopwatch
Time frame: 10 minutes
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