title: Effects of GUASHA on Heart Rate Variability in Healthy Male Volunteers under Normal Condition and Weightlifters after Weightlifting Training Sessions.
abstract: Objectives. This paper aims at exploring the effects of GUASHA on heart rate variability between healthy volunteers under normal condition and weightlifters after training sessions. Methods. Ten healthy male volunteers under normal condition and 15 male weightlifters after weightlifting training sessions were recruited into two groups. Electrocardiography was recorded before and immediately after 20-minute GUASHA. HRV was calculated in both the time domain and the frequency domain. Results. Stress index was reduced, while standard deviation of N-N intervals (SDNN), proportion derived by dividing the number of interval differences of successive N-N intervals greater than 50 ms, and root mean square of successive differences (RMSSD) were enhanced after GUASHA therapy in the two groups. The changes in SDNN and RMSSD were higher in the healthy men group than in the weightlifters group. In addition, low frequency was decreased whereas high frequency was significantly increased in healthy men after the GUASHA session. Conclusions. GUASHA therapy facilitates the parasympathetic nervous activity and modulates the balance between parasympathetic and sympathetic activities in both healthy men under normal condition and weightlifters after training sessions as indicated. Although the changes of the HRV parameters were similar in both groups, the responsiveness was more pronounced in healthy men than in male weightlifters.
authors.affiliation: Research Center in Back, Neck, Other Joint Pain and Human Performance, Khon Kaen University, Khon Kaen 40002, Thailand ; Faculty of Physical Education, Gannan Normal University, Ganzhou 341000, China ; Research and Training Center for Enhancing Quality of Life of Working-Age People, Khon Kaen University, Khon Kaen 40002, Thailand.
authors.forename: Xingze
authors.initials: X
authors.lastname: Wang
authors.affiliation: Research Center in Back, Neck, Other Joint Pain and Human Performance, Khon Kaen University, Khon Kaen 40002, Thailand ; Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand.
authors.forename: Uraiwan
authors.initials: U
authors.lastname: Chatchawan
authors.affiliation: Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand.
authors.forename: Saowanee
authors.initials: S
authors.lastname: Nakmareong
authors.affiliation: Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
authors.forename: Atit
authors.initials: A
authors.lastname: Silsirivanit
authors.affiliation: Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences, Beijing 100700, China.
authors.forename: Yingying
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Faculty of Physical Education, Gannan Normal University, Ganzhou 341000, China.
authors.forename: Dongbei
authors.initials: D
authors.lastname: Xie
authors.affiliation: Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences, Beijing 100700, China.
authors.forename: Jinsheng
authors.initials: J
authors.lastname: Yang
authors.affiliation: Research Center in Back, Neck, Other Joint Pain and Human Performance, Khon Kaen University, Khon Kaen 40002, Thailand ; Research and Training Center for Enhancing Quality of Life of Working-Age People, Khon Kaen University, Khon Kaen 40002, Thailand.
authors.forename: Wichai
authors.initials: W
authors.lastname: Eungpinichpong