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Research Article

Psychological flexibility moderates the influence of fear avoidance on outcomes after mild traumatic brain injury

ORCID Icon, ORCID Icon & ORCID Icon
Pages 991-999 | Received 03 Mar 2022, Accepted 16 Jul 2022, Published online: 10 Aug 2022
 

ABSTRACT

Objectives

Psychological factors contribute to poorer long-term outcomes following mild traumatic brain injury (mTBI); however, the exact psychological mechanisms that underly this relationship are not well understood. This study examined the relationship between psychological flexibility, fear avoidance, and outcomes over the first 6 months after mTBI

Method

Adults with mTBI-completed measures of psychological flexibility, fear avoidance, post-concussion symptoms, and functional status at baseline (<3 months post-injury; N = 152), and 3-month (N = 133) and 6-month follow-up (N = 102). A conceptually derived moderation-mediation analysis was used to test the mediating effect of fear avoidance on post-concussion symptoms and functional outcomes, and the moderating effects of psychological flexibility on fear avoidance.

Results

Fear avoidance had a significant indirect effect on the relationship between post-concussion symptoms and functional status across all three time points. Psychological flexibility was found to significantly moderate these effects. Only low levels of psychological flexibility had a significant influence on the mediating effects of high fear avoidance on functional status at 6-month follow-up.

Conclusions

Psychological flexibility may influence mTBI recovery by exerting an influence on fear avoidance. These initial findings provide a potential theoretical explanation of how fear avoidance can become maladaptive with time after mTBI.

Acknowledgment

We thank Proactive Rehabilitation for their support and collaboration with this research.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

The study was funded by a Health Research Council of New Zealand Foxley Clinical Fellowship (20/041)

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