Postural control in response to an external perturbation: effect of altered proprioceptive information

Mohapatra, Sambit; Krishnan, Vennila; Aruin, Alexander S.

doi:10.1007/s00221-011-2986-3

Cited by 63 publications

(56 citation statements)

References 68 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…By considering that muscular fatigue has been shown to lead to deficits in the afferent transmission of muscular stretching from muscle spindles to the central nervous system (Avela et al, ; Macefield et al, ; Windhorst, ), that source of sensory information seems to be unreliable about magnitude of balance perturbation for production of scaled APRs. While this source of sensory feedback has been suggested to be relevant in regular conditions of stance control (Mohapatra, Krishnan, & Aruin, ; Thompson, Bélanger, & Fung, ), under muscular fatigue, it has been proposed to be flexibly down‐weighted while other sources of sensory feedback are up‐weighted (Paillard, ). Plantar cutaneous afferents have been shown to play a role in the generation of APR to balance perturbation (Meyer, Oddsson, & Luca, ; Perry, McIlroy, & Maki, ).…”

Section: Discussionmentioning

confidence: 99%

Instantaneous interjoint rescaling and adaptation to balance perturbation under muscular fatigue

Rinaldin

Oliveira

Coelho

et al. 2019

Eur J of Neuroscience

View full text Add to dashboard Cite

Adaptation of automatic postural responses (APR) to balance perturbations might be thought to be impaired by muscle fatigue, given the associated proprioceptive and effector deficits. In this investigation, we aimed to evaluate the effect of muscular fatigue on APR adaptation over repetitive balance perturbations through support base backward translations. APR adaptation was evaluated in three epochs: (a) pre‐fatigue; (b) post‐fatigue, immediately following fatigue of the plantiflexor muscles through isometric contractions and (c) post‐recovery, 30 min after the end of fatiguing activity. Results showed the following: (a) Decreasing amplitudes of joints' maximum excursion over repetitive perturbations in the three fatigue‐related epochs. (b) Modulation of joints' excursion was observed in the first trial in the post‐fatigue epoch. (c) In the post‐fatigue epoch, we found interjoint rescaling, with greater amplitude of hip rotation associated with reduced amplitude of ankles' rotation. (d) Amplitudes of ankles' rotation were similar between the post‐fatigue and post‐recovery epochs. These findings lead to the conclusions that adaptation of automatic postural responses over repetitive trials was effective under focal muscular fatigue; modulation of the postural response took place in the first perturbation under fatigue, and generalization of response characteristics from post‐fatigue to post‐recovery suggests that feedforward processes in APRs generation are affected by the recent history of postural responses to stance perturbations.

show abstract

Section: Discussionmentioning

confidence: 99%

Instantaneous interjoint rescaling and adaptation to balance perturbation under muscular fatigue

Rinaldin

Oliveira

Coelho

et al. 2019

Eur J of Neuroscience

View full text Add to dashboard Cite

show abstract

“…After cleaning the skin with alcohol, electrodes were attached to the bellies of the following muscles: tibialis anterior, TA (at one-third on the line between the tip of the fibula and the tip of the medial malleolus), medial gastrocnemius, MG (on the most prominent bulge of the muscle), rectus femoris, RF (at 50% on the line from the anterior superior iliac spine to the superior part of the patella), biceps femoris, BF (half way between the ischial tuberosity and the lateral epicondyle of the tibia), rectus abdominis, RA (3 cm lateral to the umbilicus), and erector spinae, ES (3 cm lateral to L1). The selected muscles have been used in previous studies of anticipatory and compensatory postural adjustments involving externally induced body perturbations (Aruin and Latash, 1996, Mohapatra et al, 2012, Santos et al, 2010). The placement of electrodes was based on recommendations reported in the literature (Basmajian, 1980).…”

Section: Methodsmentioning

confidence: 99%

Older adults utilize less efficient postural control when performing pushing task

Lee

Chen

Aruin

2015

Journal of Electromyography and Kinesiology

Self Cite

View full text Add to dashboard Cite

The ability to maintain balance deteriorates with increasing age. The aim was to investigate the role of age in generation of anticipatory (APA) and compensatory (CPA) postural adjustments during pushing an object. Older (68.8 ± 1.0 years) and young adults (30.1 ± 1.4 years) participated in the experiment involving pushing an object (a pendulum attached to the ceiling) using both hands. Electrical activity of six leg and trunk muscles and displacements of the center of pressure (COP) were recorded and analyzed during the APA and CPA phases. The onset time, integrals of muscle activity, and COP displacements were determined. In addition, the indexes of co-activation and reciprocal activation of muscles for the shank, thigh, and trunk segments were calculated. Older adults, compared to young adults, showed less efficient postural control seen as delayed anticipatory muscle onset times and delayed COP displacements. Moreover, older adults used co-activation of muscles during the CPA phase while younger subjects utilized reciprocal activation of muscles. The observed diminished efficiency of postural control during both anticipatory and compensatory postural adjustments observed in older adults might predispose them to falls while performing tasks involving pushing. The outcome provides a background for future studies focused on the optimization of the daily activities of older adults.

show abstract

“…Perturbations consisted of unidirectional forces applied by the pendulum on the shoulders of the subjects. The subjects were instructed to look straight towards a target attached to the pendulum at eye level and maintain their balance after the perturbation (Mohapatra et al, 2011, 2012). The supporting surface was either stationary (RIGID) as the subjects stood on the force platform or unstable.…”

Section: Methodsmentioning

confidence: 99%

Support surface related changes in feedforward and feedback control of standing posture

Mohapatra¹,

Kukkar²,

Aruin³

2014

Journal of Electromyography and Kinesiology

Self Cite

View full text Add to dashboard Cite

The aim of the study was to investigate the effect of different support surfaces on feedforward and feedback components of postural control. Nine healthy subjects were exposed to external perturbations applied to their shoulders while standing on a rigid platform, foam, and wobble board with eyes open or closed. Electrical activity of nine trunk and leg muscles and displacements of the center of pressure were recorded and analyzed during the time frames typical of feedforward and feedback postural adjustments. Feedforward control of posture was characterized by earlier activation of anterior muscles when the subjects stood on foam compared to a wobble board or a firm surface. In addition, the magnitude of feedforward muscle activity was the largest when the foam was used. During the feedback control, anterior muscles were activated prior to posterior muscles irrespective of the nature of surface. Moreover, the largest muscle activity was seen when the supporting surface was foam. Maximum CoP displacement occurred when subjects were standing on a rigid surface. Altering support surface affects both feedforward and feedback components of postural control. This information should be taken into consideration in planning rehabilitation interventions geared towards improvement of balance.

show abstract

Postural control in response to an external perturbation: effect of altered proprioceptive information

Cited by 63 publications

References 68 publications

Instantaneous interjoint rescaling and adaptation to balance perturbation under muscular fatigue

Instantaneous interjoint rescaling and adaptation to balance perturbation under muscular fatigue

Older adults utilize less efficient postural control when performing pushing task

Support surface related changes in feedforward and feedback control of standing posture

Contact Info

Product

Resources

About