ASIA unversity:Item 310904400/8576
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    Please use this identifier to cite or link to this item: http://asiair.asia.edu.tw/ir/handle/310904400/8576


    Title: Leg Crossing Posture on Pulse Transit Time and Heart Rate Variability
    Authors: Chang, KM (Chang, Kang-Ming);Chang, KM (Chang, Keng-Ming)
    Contributors: Department of Computer and Communication Engineering
    Keywords: Heart rate variability (HRV);Pulse transit time (PTT);Leg crossing posture;RESPIRATORY EVENTS;IMPROVES;CHILDREN;WAVELET;HRV
    Date: 2008
    Issue Date: 2010-03-26 03:05:55 (UTC+0)
    Publisher: Asia University
    Abstract: Full-lotus or half-lotus leg crossing postures may aid in regulating cardiovascular functions and improving health. This study used heart rate variability (HRV) and pulse transit time (PTT) as tools to investigate the effects of leg crossing on cardiovascular function. Fourteen volunteers participated in the study. Pulse signals from their limbs and one ECG signal were recorded for five minutes for the stretched leg posture and the half-lotus leg crossing posture. Results showed that the leg crossing posture yielded a longer PTT (p<0.01), and PTT-related parameters, specifically Standard deviation of all RR[n] intervals (SDNN) (p<0.05), SD2 (p<0.05), and high frequency (HF) in the PTT spectrum (p<0.05), were significantly different between the two postures. These results indicate that PTT is a more sensitive method for detecting cardiovascular function in response to leg crossing postures than HRV; therefore, this noninvasive and simple method may be useful for further studying the effects of posture on cardiovascular function.
    Relation: JOURNAL OF MEDICAL AND BIOLOGICAL ENGINEERING, 28 (2): 95-99
    Appears in Collections:[Department of Photonics and Communication Engineering] Journal Article

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