EFFECTS OF HEAD DOWN TILT TRAINING ON CAROTID BLOOD FLOW, PSYCHOLOGICAL STRESS AND ANXIETY SENSITIVITY IN THE ELDERLY

Abstract

Background At present, population aging has become an important social problem in the world, which is closely related to the economic development of various countries. For the elderly, exercise is an important means of disease prevention and rehabilitation. “Head down tilt training” has attracted a lot of interest. From the perspective of preventive medicine, there is still a lack of systematic research on the impact of head down training on human function. The purpose of this study was to investigate the changes of carotid blood flow and the characteristics of psychological stress in the elderly after HDDT. We hypothesized that HDDT can increase carotid blood flow and reduce psychological stress. At the same time, whether head down tilt training has an impact on the psychological anxiety of the elderly has also become an important research question. Participants and Methods 40 retired teacher volunteers were recruited. Carotid hemodynamics was measured by Phillips color Doppler cv850 color ultrasound. The blood flow characteristics of four different postures were studied. This paper also uses the multidimensional health locus of control scale wallston, & dvellis, 1978 (multidimensional health locus of control scales) MHLC scale to evaluate the views on health from the perspective of psychological locus of control in three areas: Levenson's internality, the influence of powerful others and the role of opportunities. MHLC has two parallel versions, each of which is divided into three parts with six entries in each part, all of which are self-rated scales. The scores of each subscale range from 6 to 36. The sample sources of MHLC include healthy people such as students, secretaries, nurses, doctors, etc., as well as people with health problems such as diabetes, hypertension and patients undergoing hemodialysis or chemotherapy. The norm data are in IHLC m-26 (SD = 5), CHLC M = 15 (SD-6), PHLC M = 20 (SD = 5.5). Internal consistency study showed that IHLC Cronbach a = 0.61-0.80, CHLC) 0.55-0.83, phlc 0.83 56-0.75, the correlation of each component between the two parallel versions is ihlc0.75 respectively 48-0.77, CHLC0. 38-0.65, PHLC0. 46-0.53. The three subscales of test-retest reliability after an interval of 4 to 6 months were ihlco 66 CHLC0. 73, PHLC0. 71. Results There was no significant difference in gender in the same part (P > 0.05), and there was no significant difference in blood flow in different parts of the same artery (P > 0.05). In both men and women, the blood flow of left common carotid artery, right common carotid artery, right internal carotid artery and right vertebral artery showed head downward tilt of - 90 ° < supine position. For the blood flow of the left internal carotid artery, it is head downward tilt - 90 ° < supine