title: Coordination modes in sensorimotor synchronization of whole-body movement: a study of street dancers and non-dancers.
abstract: This study investigated whole-body sensorimotor synchronization (SMS) in street dancers and non-dancers. Two kinds of knee bending movement in a standing position to a metronome beat were explored in terms of stability under different movement frequencies: down-movement condition (knee flexion on the beat) and up-movement condition (knee extension on the beat). Analyses of phase relation between movement and beat revealed several distinct differences between the down- and up-movement conditions, and between dancers and non-dancers. In both groups under the up-movement condition, deviation from intended phase relation at higher beat rates, and enhanced fluctuations were observed. The deviation from intended phase relation under up-movement condition, and movement fluctuations were greater in non-dancers than in dancers. Moreover, subjective difficulty rating revealed that both groups felt that the up-movement condition was more difficult at higher beat rates. These findings suggest that down and up movements are two distinguishable coordination modes in whole-body coordination, and that street dancers have superior whole-body SMS ability.
authors.affiliation: Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Japan. akito.miura@gmail.com
authors.forename: Akito
authors.initials: A
authors.lastname: Miura
authors.forename: Kazutoshi
authors.initials: K
authors.lastname: Kudo
authors.forename: Tatsuyuki
authors.initials: T
authors.lastname: Ohtsuki
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Kanehisa
mesh_terms: D000161:Acoustic Stimulation; D000328:Adult; D003615:Dancing / Q000502:physiology* / Q000523:psychology*; D006801:Humans; D007090:Image Interpretation, Computer-Assisted; D007719:Knee Joint / Q000502:physiology; D008297:Male; D009949:Orientation / Q000502:physiology; D011597:Psychomotor Performance / Q000502:physiology*; D012931:Social Environment; D013998:Time Perception / Q000502:physiology; D055815:Young Adult