Whole-body angular momentum in a complex dance sequence: Differences across skill levels |
| |
| Affiliation: | 1. University of Sydney, Australia;2. Charles Sturt University, Australia;1. Departamento de Fisioterapia, Centro Superior de Estudios Universitarios La Salle, Universidad Autónoma de Madrid, Madrid, Spain;2. Motion in Brains Research Group, Institute of Neuroscience and Sciences of the Movement (INCIMOV), Centro Superior de Estudios Universitarios La Salle, Universidad Autónoma de Madrid, Madrid, Spain;3. Institute of Neuroscience and Craniofacial Pain (INDCRAN), Madrid, Spain;4. Hospital La Paz Institute for Health Research, IdiPAZ, Madrid, Spain;5. Nursing and Physical Therapy Department, Institute of Biomedicine (IBIOMED), Universidad de León, Ponferrada, León, Spain;6. Conservatorio Superior de Danza María de Ávila, Madrid, Spain;7. Faculty of Health Science, Escuela Internacional de Doctorado, Universidad Rey Juan Carlos, Alcorcón, Madrid, Spain;1. Department of Biomedical Engineering, University of Southern California, 3616 Trousdale Parkway, Los Angeles, CA 90089, USA;2. Department of Aerospace and Mechanical Engineering, University of Southern California, OHE 430E, Los Angeles, CA 90089, USA;3. Department of Psychology, University of Southern California, 3620 South McClintock Ave., SGM501, Los Angeles, CA 90089, USA;4. Department of Biological Sciences, University of Southern California, 3616 Trousdale Parkway, AHF-252, Los Angeles, CA 90089, USA;1. University of North Carolina at Greensboro, 1400 Spring Garden Street, Greensboro, NC 27412 USA;2. University of Nebraska Omaha, 6160 University Drive South, Omaha, NE 68182 USA;1. Department of Health and Kinesiology, Purdue University, West Lafayette, IN, United States;2. Center on Aging and the Life Course, Purdue University, West Lafayette, IN, United States;3. Human Movement Research Laboratory (MOVI-LAB), Department of Physical Education, School of Sciences, São Paulo State University (UNESP), Bauru, Brazil;1. Catherine McAuley School of Nursing and Midwifery, University College Cork, Co. Cork, Ireland;2. Faculty of Biological Sciences, School of Biomedical Sciences, University of Leeds, Leeds, United Kingdom |
| |
| Abstract: | Due to the redundant degrees of freedom (DOF) and nonlinearity of reactional kinetic elements within the human motor apparatus, controlling the complex dynamics of the human musculoskeletal system presents considerable difficulties. Based on this challenge, Bernstein (1967) viewed skill development as the process whereby the central nervous system (CNS) gains mastery of kinematic DOF and kinetic reactional elements (passive forces, moments etc.), with the highest level of skill characterised by optimal exploitation of reactional elements in the achievement of movement goals. A previous kinematic investigation into coordination differences in a complex multidirectional dance sequence demonstrated that general unfreezing of kinematic DOF occurred as dance skill progressed (Chang et al., submitted for publication). To gain insight into the role of angular reactional elements in skill, the present kinetic study investigated angular momentum and associated variables across three skill levels (beginners, intermediates, experts) within this same complex dance sequence. The results showed that the angular momenta of segments and accompanying angular reactional elements generally increased with skill level. More specifically, the findings suggested that while improvements in movement economy from cancellation of angular momentum between body segments occur early in skill progression, later in skill progression, experts utilise increased whole-body angular momentum. Although this is energetically expensive, it may enhance the aesthetic value of dance movements, and/or have mechanical advantages. Overall, the findings here provide support for Bernstein’s (1967) model of skill development. Future research should quantify the relations between energy expenditure, key biomechanical variables that reflect skill and dance aesthetics as perceived by audiences. |
| |
| Keywords: | Skill acquisition Movement energetics Movement economy Ballroom dance Latin dance |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
