Obstructive sleep apnea (OSA) is a common sleep-related breathing disorder characterized by recurrent upper airway obstruction during sleep, leading to intermittent hypoxia and sleep fragmentation. In addition to its well-known cardiometabolic consequences, OSA may negatively affect functional capacity and daily activity performance. However, upper extremity functional capacity in individuals with OSA has not been adequately evaluated.
The 6-Minute Pegboard and Ring Test (6PBRT) is a functional test designed to assess upper extremity functional capacity during unsupported arm activity. Although the test has been widely used in respiratory diseases, its measurement properties have not yet been evaluated in patients with OSA.
The aim of this study is to investigate the validity and reliability of the 6PBRT in adults diagnosed with obstructive sleep apnea using polysomnography. Participants with OSA will undergo polysomnographic evaluation and complete the 6PBRT. Test-retest reliability will be assessed by repeating the test under the same conditions. The relationship between 6PBRT performance and polysomnographic parameters (AHI, ODI, minimum SpO₂ and T90) will also be examined. In addition, associations between 6PBRT performance and clinical scales such as the Epworth Sleepiness Scale and Functional Outcomes of Sleep Questionnaire will be analyzed.
The findings of this study are expected to provide evidence regarding the measurement properties of the 6PBRT in individuals with OSA and contribute to the clinical assessment of upper extremity functional capacity in this population.
Being between 18 and 65 years of age
Presence of neurological diseases that may significantly affect upper extremity function (e.g., stroke, multiple sclerosis, peripheral neuropathy)
Adults diagnosed with obstructive sleep apnea based on polysomnography who are followed in the Sleep Center of Mardin Training and Research Hospital will be included in the study. Participants will be classified into mild, moderate, and severe obstructive sleep apnea groups according to the apnea-hypopnea index (AHI). In addition, age- and sex-matched healthy individuals without obstructive sleep apnea will be recruited as a control group.
Case-only
Cross-sectional
Not listed
6-Minute Pegboard and Ring Test (6PBRT) Score
Upper extremity functional capacity assessed using the 6-Minute Pegboard and Ring Test. The outcome will be the total number of rings moved during the 6-minute test.
Test-Retest Reliability of the 6PBRT
Reliability of the 6PBRT will be evaluated by repeating the test under the same conditions and calculating intraclass correlation coefficients.
Hand Grip Strength
Hand grip strength will be measured using a hand dynamometer to evaluate upper extremity muscle strength.
Functional Outcomes of Sleep Questionnaire (FOSQ)
Sleep-related functional status will be assessed using the Functional Outcomes of Sleep Questionnaire.
Epworth Sleepiness Scale (ESS)
Daytime sleepiness will be assessed using the Epworth Sleepiness Scale (score range 0-24).
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