Self-Reported Measures Have a Stronger Association With Dizziness-Related Handicap Compared With Physical Tests in Persons With Persistent Dizziness.

Background: Associations between dizziness-related handicap and a variety of self-reported measures have been reported. However, research regarding associations between dizziness-related handicap and aspects of functioning that includes both physical tests and self-reported measures is scarce. Objective: The purpose of the study was to describe the variations in signs and symptoms in people with persistent dizziness using physical tests and self-reported outcomes across three severity levels of the Dizziness Handicap Inventory (DHI) and investigate their associations with the DHI. Method: Participants with persistent dizziness (n = 107) were included in this cross-sectional study. The participants underwent (1) physical tests (gait tests, grip strength, body flexibility, and movement-induced dizziness) and completed questionnaires regarding (2) psychological measures (Mobility Inventory of Agoraphobia, Body Sensation Questionnaire, Agoraphobic Cognitions Questionnaire, and Hospital Depression and Anxiety Questionnaire), and (3) fatigue, dizziness severity, and quality of life (Chalders Fatigue Scale, Vertigo Symptom Scale-Short Form, and EQ visual analog scale), in addition to the DHI. Data were presented by descriptive statistics for three DHI severity levels (mild, moderate, and severe). A multiple linear backward regression analysis was conducted for each group of measures in relation to the DHI total score, with additional analyses adjusting for age and sex. Based on these results, significant associations were tested in a final regression model. Results: With increasing severity levels of DHI, the participants demonstrated worse performance on most of the physical tests (preferred and fast gait velocity, dizziness intensity after head movements), presented with worse scores on the self-reported measures (avoidance behavior, fear of bodily sensation, fear of fear itself, psychological distress, fatigue, dizziness severity, quality of life). After adjusting for age and sex, significant associations were found between total DHI and avoidance behavior, psychological distress, dizziness severity, and quality of life, but not with any of the physical tests, explaining almost 56% of the variance of the DHI total score. Conclusion: There was a trend toward worse scores on physical tests and self-reported measurements with increasing DHI severity level. The DHI seems to be a valuable tool in relation to several self-reported outcomes; however, several signs and symptoms may not be detected by the DHI, and thus, a combination of outcomes should be utilized when examining patients with persistent dizziness.

Association between musculoskeletal function and postural balance in patients with long-lasting dizziness. A cross-sectional study.

BACKGROUND AND PURPOSE: Reduced balance and musculoskeletal pain are frequently reported among patients with long-lasting dizziness. However, the association between musculoskeletal function and postural sway among these patients has not been examined. The objective of this study was to examine if there is an association between aspects of musculoskeletal function and postural balance in patients with long-lasting dizziness. METHODS: This was a cross-sectional study, using data of 105 outpatients with long-lasting dizziness. Aspects of musculoskeletal function was assessed by examining body flexibility, grip strength, preferred and fast walking speed, in addition to musculoskeletal pain. Musculoskeletal pain was evaluated using the Subjective Health Complaints questionnaire. Postural balance was assessed by path length of postural sway by using a balance platform on both firm and soft surfaces, with eyes open and closed. The association between musculoskeletal function and postural sway was assessed using linear regression analyses. RESULTS: When adjusting for age and gender we found that on a firm surface, there was an association between increased musculoskeletal pain and increased postural sway measured with eyes open (p = 0.038). In addition, there was an association between decreased body flexibility and decreased postural sway with eyes open (p = 0.025). On a soft surface, decreased fast walking speed was associated with increased postural sway with eyes open (p = 0.027). In addition, decreased grip strength was associated with increased postural sway on a soft surface with eyes closed (p = 0.015). DISCUSSION: The findings from this study imply that musculoskeletal function may associate with postural sway in patients with long-lasting dizziness, although the associations were weak.

Efficacy of intergrating vestibular rehabilitation and cognitive behaviour therapy in persons with persistent dizziness in primary care- a study protocol for a randomised controlled trial.

BACKGROUND: Dizziness is a common complaint, and the symptom often persists, together with additional complaints. A treatment combining Vestibular Rehabilitation (VR) and Cognitive Behaviour Therapy (CBT) is suggested. However, further research is necessary to evaluate the efficacy of such an intervention. The objective of this paper is to present the design of a randomised controlled trial aiming at evaluating the efficacy of an integrated treatment of VR and CBT on dizziness, physical function, psychological complaints and quality of life in persons with persistent dizziness. METHODS/DESIGN: The randomised controlled trial is an assessor-blinded, block-randomised, parallel-group design, with a 6- and 12-month follow-up. The study includes 125 participants from Bergen (Norway) and surrounding areas. Included participants present with persistent dizziness lasting for at least 3 months, triggered or exacerbated by movement. All participants receive a one-session treatment (Brief Intervention Vestibular Rehabilitation; BI-VR) with VR before being randomised into a control group or an intervention group. The intervention group will further be offered an eight-session treatment integrating VR and CBT. The primary outcomes in the study are the Dizziness Handicap Inventory and preferred gait velocity. DISCUSSION: Previous studies combining these treatments have been of varying methodological quality, with small samples, and long-term effects have not been maintained. In addition, only the CBT has been administered in supervised sessions, with VR offered as home exercises. The current study focusses on the integrated treatment, a sufficiently powered sample size, and a standardised treatment programme evaluated by validated outcomes using a standardised assessment protocol. TRIAL REGISTRATION: www.clinicaltrials.gov, ID: NCT02655575 . Registered on 14 January 2016.

Feasibility of integrating vestibular rehabilitation and cognitive behaviour therapy for people with persistent dizziness.

PURPOSE: To evaluate the feasibility of integrating vestibular rehabilitation and cognitive behaviour therapy (VR-CBT) for people with persistent dizziness in primary care. DESIGN: Prospective single-group pre- and post-test study. PARTICIPANTS: Adults (aged 18-70) with acute onset of dizziness and symptoms lasting a minimum 3 months, recruited from Bergen municipality. METHODS: Participants attended eight weekly group sessions of VR-CBT intervention. Feasibility outcomes consisted of recruitment and testing procedures, intervention adherence, and participant feedback, besides change in primary outcomes. The primary outcomes were Dizziness Handicap Inventory (DHI) and preferred gait velocity. RESULTS: Seven participants were recruited for the study. All participants completed the pre-treatment tests, five participants completed the intervention and answered post-treatment questionnaires, and three completed post-treatment testing. Of the five participants, three attended at least 75% of the VR-CBT sessions, and two 50% of the sessions. Participants reported that the VR-CBT was relevant and led to improvement in function. DHI scores improved beyond minimal important change in two out of five participants, and preferred gait velocity increased beyond minimal important change in two out of three participants. CONCLUSION: The current tests and VR-CBT treatment protocols were feasible. Some changes are suggested to optimise the protocols, before conducting a randomised controlled trial. TRIAL REGISTRATION: NCT02655575. Registered 14 January 2016-retrospectively registered.