OBJECTIVE: Epidemiological studies report that more than half of people over the age of 65 years suffer from variable sleep problems. In this study, we conducted a cohort study to investigate the relation between sleep duration on muscle mass and function within a Chinese, community-dwelling elderly population. METHOD: Our study population consisted of residents living in the township central hospital of suburban Tianjin, China. We measured muscle strength and walk speed. We divided sleep duration into the following four groups:< …

We demonstrated the hypothesis that combined exercise improves body composition, cardiometabolic risk factors, blood pressure (BP), arterial stiffness, and physical functions, in obese older men. Older men (n= 20) were randomly assigned to combined exercise training (EXP; n= 10) or control groups (CON; n= 10). The combined exercise was comprised of elastic-band resistance training and walking/running on a treadmill and bicycle at 60–70% of maximal heart rate for 3 days/weeks. EXP showed significant decreases in body weight …

Using exergaming for exercise training was found to improve physical fitness. Yet, few studies have used the “Xbox Kinect” to examine its effects on physical fitness in healthy middle-aged and older adults. The purpose of this study was to investigate the effect of 10-weeks of Xbox Kinect training on physical fitness in healthy middle-aged and older adults. Forty participants (average 64.00±4.44 years old, eight males and 32 females) were randomized to either intervention (n= 20) or control group (n= 20). The intervention group …

Objective: Although the importance of exercise instruction in preventing metabolic syndrome and lifestyle-related diseases is evident, there exists little knowledge regarding specific types of exercise which is easily accepted by exercise beginners and provide strong motivation to continuing such exercise, and its expected effect. In the present open-label, comparative study, two types of exercise program were compared in exercise beginners. Methods: Twenty-three healthy premenopausal volunteer women aged between 35 …

Background: Preservation of muscle mass during aging reduces the risk of frailty and age-related chronic diseases. We investigated the lifestyle, psychological factors, and common cardiometabolic diseases associated with accelerated muscle loss in middle-aged and older women. Materials and Methods: A total of 881 women aged 40 years and older who underwent regular health checkup at a tertiary care hospital in Korea in 2010–2011 and underwent a 6-year follow-up were included in this study. Lifestyle and health statuses were …

Inactive and unhealthy lifestyles are common among adolescent men. The planned intervention examines the effectiveness of an interactive, gamified activation method, based on tailored health information, peer networks and participation, on physical activity, health and wellbeing in young men. We hypothesize that following the intervention the physical activation group will have an improved physical activity, as well as self-determined and measured health compared with the controls. Conscription-aged men (18 years) attending …

Objective Little is known about the relationships of dietary factors, physical activity and sedentary behaviour to dehydroepiandrosterone sulphate (DHEAS) and insulin‐like growth factor‐1 (IGF‐1) concentrations among prepubertal children. Therefore, we studied the associations of these lifestyle factors with serum DHEAS and IGF‐1 in children. Design and subjects Cross‐sectional analysis of a population sample of 431 prepubertal children aged 6‐9 years. Measurements Assessment of dietary factors by food records and physical activity …

Seasonal variation in resting energy expenditure (REE) is still under debate. This study investigated seasonal changes in REE and relevant factors among Korean adults. A total of 867 healthy volunteers (385 men and 482 women) aged 20–69 years were divided into four seasonal groups and subgroups based on age, body mass index (BMI), and percent body fat (PBF) quartiles. REE, body composition, glucose metabolism, thyroid hormones, and catecholamines were measured. The seasonal factor contributed to REE independent of …

The purpose of this study was to compare the beverage consumption by gender and season in elementary school children and to investigate the role of beverage consumption patterns on their daily nutrient intakes and BMIs. Beverage consumption and dietary energy intake in 160 elementary school students in the Gyeongnam area were measured by a beverage frequency and quantity questionnaire and three 24-hour dietary recalls during winter and summer. The number of drinking moments per month, the amounts of beverage per day, and …

Objective Hepcidin may be an important mediator in exercise-induced iron deficiency. Despite the studies investigating acute exercise effects on hepcidin and markers of iron metabolism, we found no studies examining the chronic effects of walking exercises (WE) on hepcidin and markers of iron metabolism in premenopausal women. The chronic effects of two 8-week different-intensity WE on hepcidin, interleukin 6 (IL-6), and markers of iron metabolism in pre-menopausal women were examined. Methods Exercise groups …