Recurrence quantification analysis of age effects on sustained sub-maximal grip contractions
Recurrence quantification analysis (RQA) was used to analyze signals of sustained sub-maximal grip contraction (SSGC) of healthy subjects across several age groups. Recurrence plots (RP) of elderly subject showed clear periodic pattern combined with disrupted features in some parts, in comparison to control subjects who displayed quasi-periodic patterns. Quantitative analysis of the RP showed significant differences between elderly subjects and the control group for RQA parameters. The results showed that the SSGC signals of the elderly and adolescents had decreased RQA parameters, which indicated more chaotic patterns. In addition the deterministic component of the signals was less complex for the elderly and adolescents than for controls. Results of this study illustrate that the RQA technique is well suited to analyze age-related effects on sustained grip-force signals.
recurrence plot recurrence quantification analysis sustained sub-maximal grip contraction ageing
Ke Li David Hewson Jacques Duchene Jean-Yves Hogrel
Department of Biomedical Engineering, School of Control Science and Engineering, Shandong University Institut Charles Delaunay, FRE CNRS 2848, Universite de Technologie de Troyes, Troyes, France Institut de Myologie, Groupe Hospitalier Pitie-Salpetriere, Paris, France
国际会议
上海
英文
838-842
2011-10-15（万方平台首次上网日期，不代表论文的发表时间）