Virtual Conference
Heart 2022 Conference

Worawan Jiitham

Naresuan University, Thailand

Title: The Risk related of Six- Minute Walk Test performance in Thai childhood obesity aged 5-15 years


Background: Obesity is a major health problem which affects cardiovascular system and quality of life. To determine the impact of obesity on one’s physical fitness, Six-minute walk test (6MWT) is one of the non-invasive methods that has been widely used for evaluate cardiovascular function.

Objective: To identify any obesity-related factor that effects 6MWT in Thai overweight and obese children. 

Method: This is the prospective, cross-sectional study enrolled 70 children at Naresuan University Hospital to performed the 6MWT. Severity was classified as overweight (15 children, 21.4%), obesity (41 children, 60%) and morbid obesity (14 children, 20%). Data was collected from medical records and categorized into; 1) Anthropometric data, including weight, height, body mass index (BMI) and percent of fat (%Fat); 2) Metabolic profile, including fasting blood sugar (FBS), triglyceride levels (TG), total cholesterol levels (TC) and HDL; 3) Cardiac function by using echocardiography. Physical activity and Sedentary time were scored with Global Physical Activity Questionnaires (GPAQ). The Six-minute Walk Distance (6MWD) was compared to the age and sex-matched reference value.

Results: Most of the overweight and obese children had lower 6MWT distance than -2 S.D. compared to the reference value (65 children, 92.9%). Mean 6MWD in children with morbid obesity (365.07±37.06 m) was significantly lower than children with overweight (392.73±41.02 m) and obesity (408.12±55.16 m) (P=0.022). Higher %Fat (r=-0.396, P=0.001) and TC (r=-0.386, P=0.001) also associated with lower 6MWD. Cardiac function, physical activity and sedentary time were not associated with 6MWD.

Conclusion: Children with obesity had lower 6MWD compared to healthy children. Higher %Fat and TC also related with lower 6MWD. Lifestyle modification for children with overweight or obesity, including fat restriction and diet control, will not only the important guidance for weight reduction, but also help improve child’s physical fitness along with their long-term quality of life.


Worawan Jittham received her M.D. degree from the Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand, in 2001. She was certified by the Board of Pediatrics in 2007 and the Board of Pediatrics Cardiology in 2010 from the Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand. She has worked with congenital and acquired heart disease in children for many years in order to improve the quality of life of patients and their families. She is currently an assistant professor and Head of the Department of Pediatrics, Faculty of Medicine, Naresuan University, Phitsanulok, Thailand.