This study evaluated if adaptation to environmental heat stress can counteract the negative effects of hyperthermia on complex motor performance. Thirteen healthy, trained males completed 28 days of heat acclimation with 1 h daily exercise exposure to environmental heat (39.4±0.3 C and 27.0±1.0% relative humidity). Following comprehensive familiarization, the participants completed motor-cognitive testing before acclimation, as well as after 14 and 28 days of training in the heat. On all three occasions, the participants were …

Background Depression, anxiety and lack of sleep are one of the most common causes of illness among adolescents. Possible reasons for this increase include use of social networks and exposure to artificial light from electronic devices. Little is known whether functional training can be an alternative intervention to improve these parameters in adolescents. Aims The aim of the study was to investigate the effect of 6-week exercise intervention on the level of maximum oxygen consumption, depression, anxiety and sleep quality among boy and girl …

Background: Vitamin D receptor (VDR) is present on adipocytes, and many studies were performed to investigate the association between polymorphisms in VDR gene with obesity. However, in the Arab Gulf populations, whereas obesity prevalence is increasing dramatically, only a few studies were addressed this relation with obesity based only on body mass index. This study aimed to find the association between three different VDR polymorphisms BsmI (rs1544410), ApaI (rs7975232) and TaqI (rs731236) BsmI, with the …

Purpose The aim of this study was to identify gender-and age-specific occupational stress associated with depressive symptoms among Korean employees. Methods Data of 73,014 employees aged 18 and above who had undergone comprehensive health examinations at Kangbuk Samsung Hospital Health Screening Center, South Korea, in January 2012 and who were followed up until December 2017 were collected, and 63,959 (participation rate: 87.59%, men: 50,413, women: 13,546) were finally analyzed. A Cox proportional hazards …

Purpose Exercise testing by cycle ergometer allows to observe the interaction between oxygen uptake (VO 2) and workload (W), and VO 2/W‐slope can be used as a diagnostic tool. Respectively, peak oxygen uptake (VO 2 PEAK) can be estimated by maximal workload. We aim to determine reference for VO 2/W‐slope among prepubertal children and define agreement between estimated and measured VO 2 PEAK. Methods A total of 38 prepubertal children (20 girls) performed a maximal cycle ergometer test with respiratory gas …

Introduction Understanding how individual and environmental factors impact physical activity (PA) level is important when building strategies to improve PA of older adults. No studies have examined how hour-to-hour weather changes influence PA in older adults or how the association between weather and PA eventually is related to cardiorespiratory fitness (CRF) measured as peak oxygen uptake. The aim of this study was therefore to examine how hour-to-hour changes in weather effects hour-to-hour PA in a cohort of …

Background To date, no studies have attempted to estimate body shape biological age using clinical parameters associated with body composition for the purposes of examining a person's body shape based on their age. Objective We examined the relations between clinical parameters associated with body composition and chronological age, and proposed a model for estimating the body shape biological age. Methods The study was conducted in 243,778 subjects aged between 20 and 90 years who received a general medical checkup …

Correlates with Low Morning Cortisol Increase. JEPonline 2014; 17 (3): 70-76. The purpose of this study was to characterize how the stress system (ie, the morning cortisol increase) is related to weight reduction by exercise in obesity. Twelve subjects with a body mass index> 35 participated in a 22-wk exercise intervention program. The exercise program consisted of physical activity supplemented with diet and cognitive therapy seminars. Saliva was collected on two consecutive days after the intervention program. Eight of the 12 subjects …

Introduction Due to the potential for intramuscular fluid shifts from changing body position, researchers often utilize a 10‐to 15‐min period of supine rest as a standardizing procedure prior to ultrasound assessment of the lower limbs. However, no previous research has observed the changes in muscle morphological characteristics via ultrasonography of the lower limbs depending on the length of time of supine rest to determine whether 10–15 min of supine rest is necessary. The aim of this study was to examine changes in muscle …