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European Journal of Physiotherapy Volume 20, 2018 - Issue 1
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Original Article

Measurement properties of the modified and total Balance ERror SCoring System – the BESS, in a healthy adult sample

Ingerid KleffelgaardDepartment of Physical Medicine and Rehabilitation, Oslo University Hospital HF, Oslo, Norway; ;Oslo University College of Applied Sciences, Institute of Physiotherapy, Oslo, Norway; ;Faculty of Medicine, University of Oslo, Oslo, Norway; Correspondence[email protected] [email protected]
,
Birgitta LanghammerOslo University College of Applied Sciences, Institute of Physiotherapy, Oslo, Norway;
,
Maria SandhaugStatped Head Office Oslo, Oslo, Norway
,
Are Hugo PrippOslo University College of Applied Sciences, Institute of Physiotherapy, Oslo, Norway;
&
Helene Lundgaard SøbergDepartment of Physical Medicine and Rehabilitation, Oslo University Hospital HF, Oslo, Norway; ;Oslo University College of Applied Sciences, Institute of Physiotherapy, Oslo, Norway; ORCID Iconhttp://orcid.org/0000-0001-6908-7480
ORCID Icon
Pages 25-31 | Received 19 Mar 2017, Accepted 04 Jul 2017, Published online: 17 Jul 2017
 
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Abstract

Background: Measurement properties of the modified balance error scoring system (BESS) have not been widely reported, and are variable for the BESS. Thus, the purpose of this study was to assess the inter-rater reliability and minimal detectable change (MDC), the criterion validity and floor and ceiling effects for the modified BESS and the BESS in a healthy adult sample.

Methods: Two experienced raters scored the modified and total BESS on 42 healthy young adults 21 female, mean age 23.3, SD 3.8). A force plate obtained measures of body sway (sway velocity mm/s), and represented the gold standard for the criterion validity.

Results: The inter-rater reliability ICC was 0.80 (95% CI 0.67–0.89) and 0.66 (95% CI 0.48–0.81) for the modified BESS and the BESS, respectively. The inter-rater MDC was 3.2 and 10.2. The calculations of the criterion validity, (Spearman’s Rho) were large and medium for the modified BESS and BESS, respectively. A small ceiling effect was found for the modified BESS, but not for BESS.

Conclusions: The results imply that the measurement properties for the modified BESS is acceptable, however the weaker results for the BESS may limit the utility as an outcome measure for balance for both clinicians and researchers.

Acknowledgements

We would like to thank the Bachelor students in Physiotherapy Anna Svedberg, Ragnhild Kyte Slåstuen, Sveinung Sivertsen, Marit Ulvund.

Marianne Mørk, Physical therapist and MSc contributed to the discussion on how to use the BESS.

Terje Gjøvaag, Associate Professor and Head of the Motion Analysis Laboratory at OAUC contributed to the provision and instalment of the equipment and instructed the use of the Kistler balance platform and the software.

Disclosure statement

No potential conflict of interest was reported by the authors.

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