Proprioceptive Weighting Ratio for Balance Control in Static Standing Is Reduced in Elderly Patients With Non-Specific Low Back Pain.
Spine (Phila Pa 1976)
; 43(24): 1704-1709, 2018 Dec 15.
Article
em En
| MEDLINE
| ID: mdl-30059489
ABSTRACT
MINI Elderly patients older than 65 years were divided into non-specific low back pain (NSLBP) and non-LBP (NLBP) groups. The postural control study of the relative contributions of different proprioceptive signals (relative proprioceptive weighting ratio [RPW]) revealed lower leg proprioceptive decreases (RPW 240âHz) in NSLBP compared to NLBP. STUDY DESIGN:
A cross-sectional, observational study.OBJECTIVE:
The aim of this study was to determine a specific proprioceptive control strategy during postural balance in elderly patients with non-specific low back pain (NSLBP) and non-LBP (NLBP). SUMMARY OF BACKGROUND DATA Proprioceptive decline is an important risk factor for decreased balance control in elderly patients with NSLBP. The resulting reduction in proprioception in the trunk or lower legs may contribute to a reduction in postural sway. This study aims to determine the specific proprioceptive control strategy used during postural balance in elderly patients with NSLBP and NLBP and to assess whether this strategy is related to proprioceptive decline in NSLBP.METHODS:
Pressure displacement centers were determined in 28 elderly patients with NSLBP and 46 elderly patients with NLBP during upright stances on a balance board without the benefit of vision. Gastrocnemius and lumbar multifidus muscle vibratory stimulations at 30, 60, and 240âHz, respectively, were applied to evaluate the relative contributions of the different proprioceptive signals (relative proprioceptive weighting ratio, RPW) used in postural control.RESULTS:
Compared to elderly patients with NLBP, those with NSLBP had a lower RPW at 240âHz and significantly higher RPW at 30âHz. A logistic regression analysis showed that RPW at 240âHz was independently associated with NSLBP after controlling for confounding factors.CONCLUSION:
Elderly patients with NSLBP decreased their reliance on ankle strategy (RPW at 240âHz) and hip strategy (RPW at 30âHz) proprioceptive signals during balance control. The inability to control hip and ankle strategies indicates a deficit of postural control and is hypothesized to result from proprioceptive impairment. Moreover, elderly patients with NSLBP are at higher risk for lower leg proprioceptive decrease (240âHz) through the NSLBP exacerbation. LEVEL OF EVIDENCE 4.
A cross-sectional, observational study. The aim of this study was to determine a specific proprioceptive control strategy during postural balance in elderly patients with non-specific low back pain (NSLBP) and non-LBP (NLBP). Proprioceptive decline is an important risk factor for decreased balance control in elderly patients with NSLBP. The resulting reduction in proprioception in the trunk or lower legs may contribute to a reduction in postural sway. This study aims to determine the specific proprioceptive control strategy used during postural balance in elderly patients with NSLBP and NLBP and to assess whether this strategy is related to proprioceptive decline in NSLBP. Pressure displacement centers were determined in 28 elderly patients with NSLBP and 46 elderly patients with NLBP during upright stances on a balance board without the benefit of vision. Gastrocnemius and lumbar multifidus muscle vibratory stimulations at 30, 60, and 240âHz, respectively, were applied to evaluate the relative contributions of the different proprioceptive signals (relative proprioceptive weighting ratio, RPW) used in postural control. Compared to elderly patients with NLBP, those with NSLBP had a lower RPW at 240âHz and significantly higher RPW at 30âHz. A logistic regression analysis showed that RPW at 240âHz was independently associated with NSLBP after controlling for confounding factors. Elderly patients with NSLBP decreased their reliance on ankle strategy (RPW at 240âHz) and hip strategy (RPW at 30âHz) proprioceptive signals during balance control. The inability to control hip and ankle strategies indicates a deficit of postural control and is hypothesized to result from proprioceptive impairment. Moreover, elderly patients with NSLBP are at higher risk for lower leg proprioceptive decrease (240âHz) through the NSLBP exacerbation. Level of Evidence 4.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Dor Lombar
/
Equilíbrio Postural
/
Músculos Paraespinais
/
Posição Ortostática
Tipo de estudo:
Observational_studies
/
Prevalence_studies
/
Risk_factors_studies
Limite:
Aged
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Spine (Phila Pa 1976)
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
Japão