Increasing Physical Activity Decreases Hepatic Fat and Metabolic Risk Factors.

The purpose of the present research was to study the organic response after ultraendurance cycling race. Selected biochemical, leg strength, flexibility, and aerobic capacity parameters were analyzed in 6 subjects 5 days before and 5 days after completing a 1700 km ultraendurance cycling race. After the race, participants presented a significant decrease in Hb (167.8 ± 9.5 versus 141.6 ± 15.7 mg/dL), strength (29.4 ± 2.7 versus 25.5 ± 3.7 cm in a countermovement jump), and oxygen uptake and heart rate at ventilatory threshold (1957.0 ± 458.4 versus 1755.2 ± 281.5 mL/kg/min and 140.0 ± 9.7 versus 130.8 ± 8.3 bpm, resp.). Testosterone presented a decrease tendency (4.2 ± 2.5 versus 3.9 ± 2.6 ng/L) in opposition to the increase tendency of cortisol and ammonium parameters. Transferrin and iron levels presented high values related to an overstimulation of the liver, a normal renal function, a tendency to decrease flexibility, and an increase in aerobic capacity, finding a tendency to increase the absolute maximal oxygen uptake (37.2 ±2.4 versus 38.7 ± 1.8 mL/min) in contrast to previous studies conducted with subjects with similar age. These results can be used to program training interventions, recovery times between probes, and nutritional and/or ergonomic strategies in ultraendurance events.

Metabolic syndrome and cardiovascular disorders pose a challenge to global healthcare systems. Too often, patients with metabolic syndrome are diagnosed in advanced disease stages, where disease-associated damage is irreversible and treatment options are limited. Thus, prevention plays an increasingly important role in the management of cardiometabolic disorders. The main challenge of prevention is to identify patient groups who are at risk for developing overt disease and who might benefit from early therapeutic intervention. In this context, imaging-based phenotyping can add significant information to clinical evaluations, revealing anatomical and physiological changes that reflect intrinsic and extrinsic risk factors. The purpose of this review article was to provide an overview of the current state of imaging-based phenotyping of metabolic syndrome and cardiovascular disorders and to discuss current and potential developments in this field.

The PPARD gene codes protein that belongs to the peroxisome proliferator-activated receptor (PPAR) family engaged in a variety of biological processes, including lipid metabolism in muscle cells. In this study, we assess the relationship between PPARD gene expression lipid metabolism parameters and the variation of the PPARD gene expression before (T1) and after 12 hours of training (T2) sessions in a group of football players. Peripheral blood lymphocytes were obtained from 22 football players (17.5±0.7 years, 178±0.7 cm, 68.05±9.18 kg). The PPARD gene expression, analyzed by quantitative polymerase chain reaction (qPCR), was significantly higher after T2 (p = 0.0006). Moreover, at the end of the training cycle, there was a significant decrease in relative fat tissue (FAT) (%) (p = 0.01) and absolute FAT (kg) (p = 0.01). A negative correlation was observed between absolute FAT (kg) and PPARD gene expression level in T2 (p = 0.03). The levels of cholesterol and triglyceride (TG) fractions were not significantly different (p >0.05) before and after training. No significant relationship between PPARD expression and cholesterol or TG levels was found. We found that physical training affects PPARD expression. Moreover, the negative correlation between PPARD expression and absolute FAT (kg) level may be indicative of the contribution of PPARD in metabolic adaptation to increased lipid uptake that can be used to control the body composition of athletes.

Background:Obstacle course racing (OCR) has become a popular sport in recent years as it challenges participants’ mental and physical endurance through a combination of trail running and obstacles. There is currently only a limited amount of published work reporting injury types or rates at these events.Purpose:This study aims to build on the current literature, analyzing injury rates and patterns at OCR events.Methods:A secondary data analysis of deidentified medical charts from 33 OCR events in Canada from 2015 to 2017 was conducted. The scope of on-site care was first aid.Study Design:Descriptive epidemiology study.Results:A total of 1782 injuries occurred over 3 seasons from 73,366 participants, with an overall average injury rate of 2.4%; 1.0% (n = 17) of injuries required emergency medical services transport to a local emergency department, and the majority of these injuries were musculoskeletal in nature. The most common injuries treated were lacerations and musculoskeletal-related injuries; 93.9% of the injuries were able to be treated on site. These findings, in conjunction with the published literature, suggest that OCR medical teams should anticipate injury rates of up to 5.0% and a transportation rate of approximately 4.5% of those injuries to local emergency departments.Conclusion:The injury and transportation rates found in this study are congruent with the current literature and, most notably, they demonstrated a stable trend across a variety of course lengths (5-42 km ) and numbers of obstacles (≥20). While the majority of injuries may be treated on site, there is still a serious potential for life-threatening emergencies to occur.

Bariatric surgery has become a prevalent and effective method to reduce body weight and improve the health profiles of morbidly obese individuals. However, variability in the success of the procedure exists, yet few research studies have examined lifestyle changes that may enhance surgical outcomes. Therefore, the primary purpose of this study was to objectively monitor the physical activity patterns of bariatric patients, presurgery and postsurgery. The secondary purpose of this study was to build support for the validation of the Cross-Cultural Activity Participation (CAPS) weekly physical activity questionnaire, a questionnaire that may take the place of objective measurements. Twenty-four bariatric patients were recruited for this study (height: 165.6 ± 9.9 cm, weight: 121.8 ± 24.8 kg and BMI: 44.0 ± 6.5) and were asked to complete 2 office visits (1 presurgery and 1 postsurgery) for testing and wear an accelerometer physical activity monitor for 7 days presurgery and 7 days postsurgery. The office visits included body composition testing via Bod Pod, reporting of dietary intake, reporting of weekly exercise and completion of the CAPS questionnaire. Accelerometers were worn for 7 days presurgery and 7 days, 3 to 5 weeks postsurgery. Findings show that participants did not significantly change their physical activity patterns postsurgery (p ≥ 0.05). Physical activity appears to positively impact health and assist in the retention of weight loss. Therefore, the lack of change in physical activity postsurgery signifies a postsurgical lifestyle change that may be improved upon. An archived data set was used to determine the validity of the CAPS questionnaire. CAPS-derived reports of moderate to vigorous physical activity was not significantly correlated with steps per day. Further, regression analysis revealed that the CAPS questionnaire could explain only 5.2% of the variation in steps per day. Therefore, it does not appear that the CAPS questionnaire is a valid surrogate measure of physical activity.