Association Between Back Muscle Strength and Proprioception or Mechanoreceptor Control Strategy in Postural Balance in Elderly Adults with Lumbar Spondylosis

Ito, Tadashi; Sakai, Yoshihito; Itô, Yôhei; Yamazaki, Kazunori; Morita, Yoshifumi

doi:10.3390/healthcare8010058

Cited by 13 publications

(26 citation statements)

References 29 publications

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“…In order to evaluate postural sway during proprioceptive inputs to the muscle spindles, the response frequency ranging from 56 to 100 Hz was analyzed. For information regarding proprioceptive dominance, RPW was calculated as follows: RPW [%] = (RMS GS )/(RMS GS + RMS LM ) × 100), where RMS GS and RMS LM are the root mean square of the COP displacement in the anteroposterior direction during GS and LM vibrations, respectively [ 6 , 28 , 34 , 35 ]. RMS was calculated as follows:

where n is the number of data series; Y * Dur (n) is the CoP in the anteroposterior direction in the duration section (Dur-section); Y * Pre is the mean value of CoP in the anteroposterior direction in the pre-sectiion (Pre-section); the subscript “*” is used to distinguish the stimulation body locations, namely, the GS or LM.…”

Section: Methodsmentioning

confidence: 99%

“…Each application required 30 s; this time was divided into the first 15 s and last 15 s to form the pre-section and duration section, respectively. In the duration section, the vibratory stimulus was applied to the GS or LM of the participant with his/her eyes closed [ 6 , 19 , 27 , 28 , 34 , 35 ]. The number of repetitions of stimulation was two, and the stimulation was given to GS and LM once for 15 s. Therefore, the total stimulation time was 30 s. In addition, the participants rested on a chair once for 60 s between measurements.…”

Section: Methodsmentioning

confidence: 99%

“…The number of repetitions of stimulation was two, and the stimulation was given to GS and LM once for 15 s. Therefore, the total stimulation time was 30 s. In addition, the participants rested on a chair once for 60 s between measurements. In previous studies, the task has been performed once because there was an influence of getting used to the postural sway test [ 6 , 19 , 20 , 21 , 27 , 28 , 34 , 35 ]. Therefore, in this study, the task was performed once as well.…”

Section: Methodsmentioning

confidence: 99%

“…In order to evaluate postural sway during proprioceptive inputs to the muscle spindles, the response frequency ranging from 56 to 100 Hz was analyzed. For information regarding proprioceptive dominance, RPW was calculated as follows: RPW [%] = (RMSGS)/(RMSGS + RMSLM) × 100), where RMSGS and RMSLM are the root mean square of the COP displacement in the anteroposterior direction during GS and LM vibrations, respectively [6,28,34,35]. RMS was calculated as follows:…”

Section: Postural Control Assessmentmentioning

confidence: 99%

“…In a previous study, we found that proprioceptive cues in healthy young adults were principally required for orientation of postural control rather than for control of upright posture, for which vestibular and visual cues were more important [ 2 ]. Diseases affecting postural alignment of the spine may lead to decreased quality of life, weakened back muscles, and postural instability [ 3 , 4 , 5 , 6 ]. Sagittal balance is a mechanical system consisting of osteoarticular elements in the spine–pelvis structure of the lower legs.…”

Section: Introductionmentioning

confidence: 99%

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Postural Sway in Older Patients with Sagittal Imbalance and Young Adults during Local Vibratory Proprioceptive Stimulation

et al. 2021

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This study aimed to assess differences in somatosensory control strategies between older patients with sagittal imbalance and young adults during postural tasks. The center of pressure displacement in 27 older patients with sagittal imbalance and 27 young adults was determined upon standing blindfolded on a balance board. Vibratory stimulation at 56 to 100 Hz was applied bilaterally to the gastrocnemius and soleus muscles (GS) and lumbar multifidus to evaluate the contributions of proprioceptive signals to postural control. Data of older patients and young adults were compared using the Mann–Whitney U-test or independent sample t-tests. Compared with the young adults, the older patients were significantly more reliant on the GS (p < 0.005) for their postural control and showed a higher relative proprioceptive weighting ratio (RPW) (p = 0.038). The postural strategy adopted by the older patients depended on the level of proprioceptive stimulation applied to the GS, and the postural control strategy of the ankle correlated with RPW. Overall, this study identifies RPW as a novel measure of postural strategy in older patients with sagittal imbalance and provides an understanding of strategies used to maintain balance, which may assist in developing preventative measures to reduce the risk of falls.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…In order to evaluate postural sway during proprioceptive inputs to the muscle spindles, the response frequency ranging from 56 to 100 Hz was analyzed. For information regarding proprioceptive dominance, RPW was calculated as follows: RPW [%] = (RMSGS)/(RMSGS + RMSLM) × 100), where RMSGS and RMSLM are the root mean square of the COP displacement in the anteroposterior direction during GS and LM vibrations, respectively [6,28,34,35]. RMS was calculated as follows:…”

Section: Postural Control Assessmentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Postural Sway in Older Patients with Sagittal Imbalance and Young Adults during Local Vibratory Proprioceptive Stimulation

et al. 2021

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Effects of unilateral neck muscle vibration on standing postural orientation and spatial perception in healthy subjects based on stimulus duration and simultaneous stimulation of trunk muscles

Hirosawa

Takehara²,

Moriyama

et al. 2023

PLoS ONE

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Neck muscle vibration (NMV) influences proprioceptive sensations and modulates standing postural orientation and spatial perception. However, the effects of NMV in healthy participants would vary based on the influence of stimulus duration and combination with trunk muscle vibration. Therefore, this study with a cross-over design clarified these effects. Twenty-four healthy participants (mean age, 25.7±3.7 years) were enrolled. To assess standing postural orientation, standing center-of-pressure (COP) measurements were recorded on a COP platform, starting with closed eyes and then with open eyes. The mean mediolateral (ML) and anteroposterior (AP) position [mm] of COP and other parameters were calculated. To assess spatial perception, subjective straight ahead (SSA) measurements were recorded, wherein participants were instructed to point and project the position of the manubrium of sternum on the touch panel using their right index finger with their eyes closed. Measurements were taken before and after four conditions: no vibration (control), left NMV for 30 s, left NMV for 10 min, and left NMV and left lumbar back vibration for 10 min. Vibratory stimulation was performed with the eyes closed at 80 Hz. The measurements under the four conditions were conducted with random cross-over and 5-min resting period between the conditions. COP and SSA values were subtracted before and after each condition for standardized variation and compared. NMV combined with trunk muscle vibration for 10 min resulted in significant deviations of the ML-COP toward the stimulation side and AP-COP toward the anterior side compared to the control condition with closed eyes. SSA showed no significant differences. These findings suggest that NMV-induced nervous system modulation would be amplified by proprioceptive sensory input to trunk muscles. Therefore, this method could provide a new option for clinical trials on postural orientation using NMV. SSA based on proprioceptive sensation may not be biased without visual illusions.

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Proprioception and Geriatric Low Back Pain

Sakai

Watanabe

Wakao

et al. 2022

Spine Surg Relat Res

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Proprioception is a deep sensation that perceives the position of each part of the body, state of movement and muscle contraction, and resistance and mass applied to the body. Proprioceptive feedback influences movement and positional accuracy, resulting in key somatosensory functions for human postural control. Proprioception encompasses signals received from proprioceptors located in the skin, subcutaneous tissue, muscles, tendons, and joint capsules, commonly known as mechanoreceptors. The muscle spindle, a crucial proprioceptor, is stretched during eccentric contraction of muscle, thus generating an action potential on afferent fibers to convey a proprioceptive information to the sensorimotor cortex in the brain. For exercise therapy in patients with locomotor disease, proprioception serves an essential function for motor control; thus, this should be considered to obtain effective muscle output. As postural control is achieved by proprioceptive function according to the balance between the lower limb and trunk, relative proprioceptive weighting ratio can help clarify proprioceptive control using muscle response to mechanical vibration. The absence of proprioceptive information congruent with motor intention activates cortical center monitoring incongruence of sensation, leading to pathological pain. Therapeutic procedures may aim to restore the integrity of cortical information processing in musculoskeletal chronic pain. Poor proprioception is one of the main causes of decreased postural balance control in elderly patients with low back pain (LBP). It has been hypothesized that proprioception of the lower limbs deteriorates with age-related muscle mass loss (sarcopenia), which increases the proprioceptive burden on the lumbar spine. Accurate diagnosis of the proprioceptive function is important for establishing a treatment procedure for proprioceptive recovery, and further prospective research is required to clarify the relationship between proprioception and LBP improvement.

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Association Between Back Muscle Strength and Proprioception or Mechanoreceptor Control Strategy in Postural Balance in Elderly Adults with Lumbar Spondylosis

Cited by 13 publications

References 29 publications

Postural Sway in Older Patients with Sagittal Imbalance and Young Adults during Local Vibratory Proprioceptive Stimulation

Postural Sway in Older Patients with Sagittal Imbalance and Young Adults during Local Vibratory Proprioceptive Stimulation

Effects of unilateral neck muscle vibration on standing postural orientation and spatial perception in healthy subjects based on stimulus duration and simultaneous stimulation of trunk muscles

Proprioception and Geriatric Low Back Pain

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