We analysed the co-ordination of the elevation angles of the thigh (alpha (t)), shank (alpha (s)) and foot (alpha (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, E4((CCF)) could be five times higher than Ea((CCF)) With walking experience, Et-(CCF) for both alpha (t)-alpha (s) and alpha (s)-alpha (f) pairs evolved following a biexponential profile, with a fast time constant below 6 months. Adult-like CCF parameters were reached earlier for alpha (s)-alpha (f) than alpha (f)-alpha (s) indicating disto-proximal maturation of the temporal co-ordination of the lower limb segments in human locomotion. (C) 2001 Elsevier Science Ireland Ltd. All rights reserved.

Cheron, G., Bengoetxea, A., Bouillot, E., Lacquaniti, F., Dan, B. (2001). Early emergence of temporal co-ordination of lower limb segments elevation angles in human locomotion. NEUROSCIENCE LETTERS, 308(2), 123-127 [10.1016/S0304-3940(01)01925-5].

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

LACQUANITI, FRANCESCO;
2001-01-01

Abstract

We analysed the co-ordination of the elevation angles of the thigh (alpha (t)), shank (alpha (s)) and foot (alpha (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, E4((CCF)) could be five times higher than Ea((CCF)) With walking experience, Et-(CCF) for both alpha (t)-alpha (s) and alpha (s)-alpha (f) pairs evolved following a biexponential profile, with a fast time constant below 6 months. Adult-like CCF parameters were reached earlier for alpha (s)-alpha (f) than alpha (f)-alpha (s) indicating disto-proximal maturation of the temporal co-ordination of the lower limb segments in human locomotion. (C) 2001 Elsevier Science Ireland Ltd. All rights reserved.
2001
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore BIO/09 - FISIOLOGIA
English
Development; Locomotion; Lower limb; Temporal co-ordination
Cheron, G., Bengoetxea, A., Bouillot, E., Lacquaniti, F., Dan, B. (2001). Early emergence of temporal co-ordination of lower limb segments elevation angles in human locomotion. NEUROSCIENCE LETTERS, 308(2), 123-127 [10.1016/S0304-3940(01)01925-5].
Cheron, G; Bengoetxea, A; Bouillot, E; Lacquaniti, F; Dan, B
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/50018
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