Early emergence of temporal co-ordination of lower limb segments elevation angles in human locomotion

Guy Cheron; Ana Bengoetxea; Ethel Bouillot; Francesco Lacquaniti; Bernard Dan

doi:10.1016/S0304-3940(01)01925-5

Early emergence of temporal co-ordination of lower limb segments elevation angles in human locomotion

Guy Cheron, Ana Bengoetxea, Ethel Bouillot, Francesco Lacquaniti, Bernard Dan

Fondazione Santa Lucia

Research output: Contribution to journal › Article › peer-review

Abstract

We analysed the co-ordination of the elevation angles of the thigh (α_t), shank (α_s) and foot (α_f) during walking in 19 adults and 21 children (aged 11-144 months), including the very first unsupported steps in four. Cross-correlation functions (CCF) maturation of pairs of elevation angles was quantified by a global error parameter (Et_(CCF)) reflecting the difference between particular CCF value of toddlers and mean adult value (Ea_(CCF)). During the very first step, Et_(CCF) could be five times higher than Ea_(CCF). With walking experience, Et_(CCF) for both α_t-α_s and α_s-α_f pairs evolved following a biexponential profile, with a fast time constant below 6 months. Adult-like CCF parameters were reached earlier for α_s-α_f than α_t-α_s, indicating disto-proximal maturation of the temporal co-ordination of the lower limb segments in human locomotion.

Original language	English
Pages (from-to)	123-127
Number of pages	5
Journal	Neuroscience Letters
Volume	308
Issue number	2
DOIs	https://doi.org/10.1016/S0304-3940(01)01925-5
Publication status	Published - Aug 3 2001

Keywords

Development
Locomotion
Lower limb
Temporal co-ordination

ASJC Scopus subject areas

Neuroscience(all)

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10.1016/S0304-3940(01)01925-5

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title = "Early emergence of temporal co-ordination of lower limb segments elevation angles in human locomotion",

abstract = "We analysed the co-ordination of the elevation angles of the thigh (αt), shank (αs) and foot (αf) during walking in 19 adults and 21 children (aged 11-144 months), including the very first unsupported steps in four. Cross-correlation functions (CCF) maturation of pairs of elevation angles was quantified by a global error parameter (Et(CCF)) reflecting the difference between particular CCF value of toddlers and mean adult value (Ea(CCF)). During the very first step, Et(CCF) could be five times higher than Ea(CCF). With walking experience, Et(CCF) for both αt-αs and αs-αf pairs evolved following a biexponential profile, with a fast time constant below 6 months. Adult-like CCF parameters were reached earlier for αs-αf than αt-αs, indicating disto-proximal maturation of the temporal co-ordination of the lower limb segments in human locomotion.",

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author = "Guy Cheron and Ana Bengoetxea and Ethel Bouillot and Francesco Lacquaniti and Bernard Dan",

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AU - Bengoetxea, Ana

AU - Bouillot, Ethel

AU - Lacquaniti, Francesco

AU - Dan, Bernard

PY - 2001/8/3

Y1 - 2001/8/3

N2 - We analysed the co-ordination of the elevation angles of the thigh (αt), shank (αs) and foot (αf) during walking in 19 adults and 21 children (aged 11-144 months), including the very first unsupported steps in four. Cross-correlation functions (CCF) maturation of pairs of elevation angles was quantified by a global error parameter (Et(CCF)) reflecting the difference between particular CCF value of toddlers and mean adult value (Ea(CCF)). During the very first step, Et(CCF) could be five times higher than Ea(CCF). With walking experience, Et(CCF) for both αt-αs and αs-αf pairs evolved following a biexponential profile, with a fast time constant below 6 months. Adult-like CCF parameters were reached earlier for αs-αf than αt-αs, indicating disto-proximal maturation of the temporal co-ordination of the lower limb segments in human locomotion.

AB - We analysed the co-ordination of the elevation angles of the thigh (αt), shank (αs) and foot (αf) during walking in 19 adults and 21 children (aged 11-144 months), including the very first unsupported steps in four. Cross-correlation functions (CCF) maturation of pairs of elevation angles was quantified by a global error parameter (Et(CCF)) reflecting the difference between particular CCF value of toddlers and mean adult value (Ea(CCF)). During the very first step, Et(CCF) could be five times higher than Ea(CCF). With walking experience, Et(CCF) for both αt-αs and αs-αf pairs evolved following a biexponential profile, with a fast time constant below 6 months. Adult-like CCF parameters were reached earlier for αs-αf than αt-αs, indicating disto-proximal maturation of the temporal co-ordination of the lower limb segments in human locomotion.

KW - Development

KW - Locomotion

KW - Lower limb

KW - Temporal co-ordination

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Early emergence of temporal co-ordination of lower limb segments elevation angles in human locomotion

Abstract

Keywords

ASJC Scopus subject areas

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