Ankle muscle activity modulation during single-leg stance differs between children, young adults and seniors

Kurz, Eduard; Faude, Oliver; Roth, Ralf; Zahner, Lukas; Donath, Lars

doi:10.1007/s00421-017-3764-0

Cited by 38 publications

(39 citation statements)

References 54 publications

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“…Regarding sex, girls aged 7-12 years have better balance accuracy than boys and show greater systems integration. For adults, no differences were found in their balance response regardless of sex 12,13 .…”

Section: Introductionmentioning

confidence: 79%

“…Intergroup and intragroup significant differences were also observed. 3,4,5,6,7,8,9,10,11,12 Mean and standard deviation groups, visual information, and sex. P values found for two-way ANOVA and TUKEY post-hoc test: a OE < CE; b G1 > G2 > G3; c G1OE > G3 OE; d G1 CE > G2 OE; e G1 CE > G2 CE; f G1 CE > G3 OE; g G1 CE > G3 CE; h G1 OE > G1 CE; i G2 CE > G2 OE; j G2 CE > G3 OE; k G2 CE > G3 CE; l G2 OE > G3 OE; m G1 OE > G3 CE; n G1 OE > G2 OE.…”

Section: Resultsmentioning

confidence: 99%

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Influence of age, sex, and visual information on postural control in children

Victorio

Fujisawa

2019

Motriz: rev. educ. fis.

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This study aims to evaluate and identify the influence of age, sex, and visual information on postural control in children. Methods: Participants were 62 children (30 boys and 32 girls) divided into the following age groups (G): G1, aged 5-6 years (n = 23); G2, aged 7-8 years (n = 21); and G3, aged 9-10 years (n = 18). The analyzed variables were the center of pressure (COP) and anteroposterior (AP) and mid-lateral (ML) oscillation velocity (OV) obtained in the biped posture force platform with their open eyes (OE) and closed eyes (CE). Results: G3 COP, OV_AP, and OV_ML are smaller than those in G1 and G2 in OE (p < 0.00) and CE (p < 0.05). Girls demonstrated worse postural control than boys for COP, OV_AP, and OV_ML (p < 0.00) in G1. Conclusion: Age was the most influential factor of COP (21%), OV_AP (24%), and OV_ML (39%). Older children perform better, because of the positive contribution of visual information. Girls initially had worse postural control responses, but at age 7-8, they tend to outgrow boys. Advanced age provides more influence on postural control than visual information and sex.

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Section: Introductionmentioning

confidence: 79%

Section: Resultsmentioning

confidence: 99%

Influence of age, sex, and visual information on postural control in children

Victorio

Fujisawa

2019

Motriz: rev. educ. fis.

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“…with plantar-and dorsi-flexors; Supplementary Table 2, pattern 1), may be required to ensure stability in running 28 given the immature neural control of posture and balance at that age 29,30 .…”

Section: Discussionmentioning

confidence: 99%

Plasticity of muscle synergies through fractionation and merging during development and training of human runners

et al. 2020

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Complex motor commands for human locomotion are generated through the combination of motor modules representable as muscle synergies. Recent data have argued that muscle synergies are inborn or determined early in life, but development of the neuromusculoskeletal system and acquisition of new skills may demand fine-tuning or reshaping of the early synergies. We seek to understand how locomotor synergies change during development and training by studying the synergies for running in preschoolers and diverse adults from sedentary subjects to elite marathoners, totaling 63 subjects assessed over 100 sessions. During development, synergies are fractionated into units with fewer muscles. As adults train to run, specific synergies coalesce to become merged synergies. Presences of specific synergy-merging patterns correlate with enhanced or reduced running efficiency. Fractionation and merging of muscle synergies may be a mechanism for modifying early motor modules (Nature) to accommodate the changing limb biomechanics and influences from sensorimotor training (Nurture).

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“…[5][6][7] Postural assessment via posturography characterizes the efficiency of postural control through different variables of the projection of the centre of mass. 8 Different simple clinical balance and related physical performance tests are utilized to gain insights about the ability/inability to perform and control predefined postures or movements or to counteract perturbations. 9 Some research on this topic has been done in children as well as in adult PwH in recent years.…”

Section: Introductionmentioning

confidence: 99%

“…Results of relative heel (PwH: 47% [SD 16], Con: 51%[8], P = 0.34, d = −0.31) as well as left side (PwH: 50%[10], Con: 51%[4], P = 0.47, F I G U R E 1 Individual pressure loads (as percentage distribution related to the sum of opposed equal halves [left-right, heelforefoot]) with 95% confidence ellipses (CE) of patients with haemophilia (PwH) and non-haemophilic controls (Con). Note: CE of PwH is more than three times larger WFH joint score(Gilbert score) values of patients with haemophilia (PwH) with their weight distribution outside (PwH out) or inside (PwH in) of the 95% confidence ellipse of the non-haemophilic control group.…”

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confidence: 99%

Posturographic and ankle muscle activation characteristics in patients with haemophilia

et al. 2018

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Introduction The objective of this work was to examine the interrelations of posturographic and surface EMG (SEMG) characteristics of ankle muscles in patients with haemophilia while standing naturally. Methods Surface EMG of five bilaterally recorded ankle muscles was conducted in 24 patients with haemophilia (PwH, age: 42 [11] years, mean [SD], 22 A, 2 B, 21 severe, 3 moderate) with median (quartiles) WFH orthopaedic joint score of 30 (20/39) points and 24 non‐haemophilic controls (Con, age: 42 [12]). Force plate (IBS) signals were captured simultaneously during bipedal stance with eyes open. Load proportion of the left and right sides as well as heel and forefoot were calculated via four independent pressure transducers. Overall, weight distribution (WD) indices are reported with higher results representing a poorer WD. Results Analyses of WD showed large differences between groups (PwH: 10.2 [5.4], Con: 5.2 [2.9], P < 0.001, d = 1.15). After clustering PwH, large effects (P = 0.02, ηp2 > 0.16) were found for amplitude ratios of the lateral gastrocnemius (LG) muscle. In PwH, the degree of joint alteration of the right lower limb was associated with load proportion of the left side (ρ > 0.64, P = 0.001). Conclusion Patients with greater dysbalance showed higher forefoot loads and appeared to compensate their altered joint situations with considerably higher amplitude ratios of LG. Further studies should investigate whether therapeutic interventions could alter postural alignment and muscle activation and how these can influence patients’ joint function and symptoms.

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Ankle muscle activity modulation during single-leg stance differs between children, young adults and seniors

Cited by 38 publications

References 54 publications

Influence of age, sex, and visual information on postural control in children

Influence of age, sex, and visual information on postural control in children

Plasticity of muscle synergies through fractionation and merging during development and training of human runners

Posturographic and ankle muscle activation characteristics in patients with haemophilia

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