Thesis (Ph.D.)--Chulalongkorn University, 2013

The purposes of this study were to investigate the physical activity (PA) and to identify the predicting factors of PA among new coronary artery disease (CAD) patients. One hundred and sixty participants who were first diagnosed by CAG and had actual appointment to out-patients of medical clinic within three months were recruited from 10 of 38 hospitals of all regions in Thailand by a proportional randomized sampling. Data were collected by questionnaires including demographic data form, symptom frequency and symptom distress scale (SFSDS, α=0.96), subjective PA experiences scale (SPAES, α=0.73), family and friend support for PA scale (FFSPAS, α=0.93), self-efficacy for PA scale (SEPAS, α=0.97), and international PA questionnaire (IPAQ, α=0.63). Data were analyzed by descriptive statistics and the LISREL with Robust Maximum Likelihood estimation. The findings revealed that 18.75% of the patients were sportsman, 3.12% still have been sportsman. 60.00% has no health problems or physical activity limitation. The participants spent average 1,800 min/wk. for physical activity, the activity intensity was 6,048 MET-min/wk., and 1,260 min/wk., for sitting, by average. With the level of high, moderate, and low intensity, male had activity intensity more than female. Regarding the high intensity level (>3,000 MET-min/wk.) 33.75% were male, 11.25% were female; the moderate intensity level (600-3,000 MET-min/wk.) 22.50% were male, 20.62% were female; and the low intensity level (