Single Leg Stance Test
Original Editor - Lucinda hampton
Purpose[edit | edit source]
- The Single Leg Stance (SLS) Test is used to assess static postural and balance control. The SLS Test is a balance assessment that is widely used in clinical settings to monitor neurological and musculoskeletal conditions.
- Abnormal values may indicate conditions such as peripheral neuropathy, intermittent claudication, or other conditions that may impair balance.
- The SLS Test will quantify balance status for those who are at increased risks for fall.
Method[edit | edit source]
- Performed with eyes open and hands on the hips.
- Patient stands on one leg unassisted; time begins when opposite foot leaves the ground; time stops immediately when opposite foot touches the ground and/or when hands leave the hips.
- If unable to stand for 5 seconds or less client at greater risk of injury from fall.
Age-Related Normative Values[edit | edit source]
- 18-39 years-old (eyes open): 43 seconds
- 18-39 years-old (eyes closed): 9 seconds
- 40-49 years-old (eyes open): 40 seconds
- 40-49 years-old (eyes closed): 7 seconds
- 50-59 years-old (eyes open): 37 seconds
- 50-59 years-old (eyes closed): 4.8 seconds
- 60-69 years-old (eyes open): 26.9 seconds
- 60-69 years-old (eyes closed): 2.8 seconds
- 70-79 years-old (eyes open): 18.3 seconds
- 70-79 years-old (eyes closed): 2 seconds
- 80-99 years-old (eyes open): 5.6 seconds
- 80-99 years-old (eyes closed): 1 second
Clinical Implications[edit | edit source]
Ability to control anticipatory postural adjustments (APAs) prior to lifting one leg while standing in unsupported equilibrium represents a complex motor task that is significantly impaired by:
- Neurological conditions like multiple sclerosis, Parkinson’s disease, Alzheimer’s disease, and dementia
- Traumatic brain injury
- General geriatric population
- Lower extremity pathology like knee osteoarthritis (OA), one of the most common chronic health conditions, is associated with significant impairment and disability, and predominantly affects the elderly population.
Limitations[edit | edit source]
Single leg stance test normative values are minimal due to limited data.
References[edit | edit source]
- Springer, B. A., Marin, R. H., Cyhan, T., Roberts, H., & Gill, N. W. (2007). Normative Values for the Unipedal Stance Test with Eyes Open and Closed. Journal of Geriatric Physical Therapy, 30(1), 8–15. https://doi.org/10.1519/00139143-200704000-00003
- Abilitiy lab SLS Available from:https://www.sralab.org/rehabilitation-measures/single-leg-stance-or-one-legged-stance-test (last accessed 13.12.2020)
- Hunt MA, McManus FJ, Hinman RS, Bennell KL. Predictors of single‐leg standing balance in individuals with medial knee osteoarthritis. Arthritis care & research. 2010 Apr;62(4):496-500. Available from:https://onlinelibrary.wiley.com/doi/full/10.1002/acr.20046 (accessed 13.12.2020)
- Zhang C, Talaber A, Truong M, Vargas BB. KD Balance: An objective measure of balance in tandem and double leg stances. Digital Health. 2019 Oct;5:2055207619885573.Available from:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6831964/ (accessed 13.12.2020)
- Bonora G, Mancini M, Carpinella I, Chiari L, Ferrarin M, Nutt JG, Horak FB. Investigation of anticipatory postural adjustments during one-leg stance using inertial sensors: evidence from subjects with Parkinsonism. Frontiers in neurology. 2017 Jul 25;8:361.Available from:https://www.frontiersin.org/articles/10.3389/fneur.2017.00361/full (accessed 13.12.2020)