Handgrip strength and associated factors among Brazilian adolescents: A cross-sectional study.

Background: The handgrip strength (HGS) is an indicator of muscle strength associated with several health outcomes in adolescents and adults. This cross-sectional study aimed to identify HGS levels and associated modifiable and non-modifiable risk factors in adolescents.

Methods: The study included 971 adolescents (496 boys) aged 15-18 years.

Relationship Between Muscle Strength, Body Composition and Bone Mineral Density in Adolescents.

Adolescence is an important period for the acquisition of bone mass, which can be enhanced by several factors. This study aimed examine the relationships of handgrip strength, free-fat mass, and fat mass with bone mineral density in adolescents. 118 adolescents (60 girls), aged 10 to 14 years, participated in the study.

Anthropometric indicators as predictors of pelvic floor muscle distress in young women.

Aim: To identify anthropometric indicators that could predict pelvic floor muscle distress (PFMD) in young women.

Method: A cross-sectional study was conducted, whose sample consisted of 54 women aged between 18 and 35 years. The Pelvic Floor Distress Inventory was used to assess the PFMD.

Body image dissatisfaction in adolescents: Comparison with physical activity, teasing and social support.

This study aimed to compare the adolescents' body dissatisfaction with physical activity, teasing during physical activity and social support. Participants were 938 Brazilian adolescents aged 15-19 years. Study variables were investigated through questionnaires.

Physical exercise prevents the exacerbation of oxidative stress parameters in chronic kidney disease.

Objective: Reactive oxygen species play an important role in the pathogenesis of chronic kidney disease (CKD). Physical exercise was suggested as a useful approach to diminish impaired oxidative defense mechanisms. This study sought to observe the effects of physical training before the induction of renal lesions on oxidative stress parameters in animals induced for CKD.

Physical exercise increases mitochondrial function and reduces oxidative damage in skeletal muscle.

The present study investigated mitochondrial adaptations and oxidative damage after 4 and 8 weeks of running training in skeletal muscle of mice. Twenty-one male mice (CF1, 30-35 g) were distributed into the following groups (n = 7): untrained (UT); trained-4 weeks (T4); trained-8 weeks (T8). Forty-eight hours after the last training session the animals were killed by decapitation and quadriceps (red portion) were removed and stored at -70 degrees C.