Özet:

Purpose: Vertigo (V), dizziness (D), and imbalance cause functional limitation and participation in peripheral vestibular hypofunction (PVH). The aim was to investigate the relation of V, D, imbalance, with physical activity, exercise capacity, activities of daily living (ADL), and quality of life (QoL) in patients with PVH. Methods: Thirty-nine subjects with and 32 without PVH were included. The V and D severity and frequency using Visual Analogue Scale (VAS), balance using Modified Clinical Test of Sensory Interaction and Balance (M-CTSIB), and Activity Specific Balance Confidence Scale (ABC) were assessed. Physical activity using the International Physical Activity Questionnaire (IPAQ) and functional exercise capacity using the 6-minute walk test (6MWT) were evaluated. ADL using the Vestibular Disorders ADL Scale (VADL) and QoL using the Dizziness Handicap Inventory (DHI) were determined. Results: M-CTSIB, ABC, IPAQ, 6MWT, VADL, and DHI were lower in patients with PVH as compared to the control group (p<0.05). V-severity and -frequency were related to IPAQ (r=-0.602 and r=-0.321), VADL (r=0.626 and r=0.492), and DHI (r=0.640 and r=0.578, respectively, p<0.05). Both D-severity and -frequency was correlated with IPAQ (r=-0.493 and r=-0.487), VADL (r=0.565 and r=0.408), and DHI (r=0.627 and r=0.566, respectively, p<0.05). V- and D-severity was associated with 6MWT (r=-0.339 and r=-0.336, respectively, p<0.05). When somatosensory and visual sensations decreased, the balance was correlated with 6MWT (r=-0.412), VADL (r=0.545), and DHI (r=0.422, p<0.05). Conclusion: The V, D, and imbalance are associated with physical activity level, functional exercise capacity, ADL, and QoL in PVH. Further study is needed to investigate the effects of vestibular rehabilitation programs to improve physical activity and functional exercise capacity.

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