OBJECTIVE To evaluate the prevalence of low aerobic fitness levels and to analyze the association with sociodemographic factors, lifestyle and excess body fatness among adolescents of southern Brazil. METHODS The study included 879 adolescents aged 14 to 19 years the city of São José/SC, Brazil. The aerobic fitness was assessed by Canadian modified test of aerobic fitness. Sociodemographic va...

OBJECTIVE The aims of this study were to compare the aerobic fitness level of working patients who have recurrent low back pain with those of healthy age- and gender-matched controls, and to investigate the relationship of aerobic fitness level with pain intensity, general health, perceived disability, fear-avoidance beliefs and self-efficacy. SUBJECTS AND METHODS A total of 57 patients with ...

background: this study investigated the effects of lignosus rhinocerotis (lrs) supplementation and resistance training (rt) on isokinetic muscular strength and power, anaerobic and aerobic fitness, and immune parameters in young males. methods: participants were randomly assigned to four groups: control (c), lrs, rt, and combined rt-lrs (rt-lrs). participants in the lrs and rt-lrs groups consum...

BACKGROUND The neuronal isoform of nitric oxide synthase (NOS-1) may be an important regulator of cardiac contractility by modifying calcium release and uptake from sarcoplasmic reticulum. Our working hypothesis was that NOS-1 modulates cardiomyocyte contractility more markedly in rat lines with low versus high congenital aerobic fitness. METHODS AND RESULTS Rats performed high-intensity inte...

Neuroimaging research suggests that cerebral white matter (WM) integrity, as reflected in fractional anisotropy (FA) via diffusion tensor imaging (DTI), is decreased in older adults, especially in the prefrontal regions of the brain. Behavioral investigations of cognitive functioning suggest that some aspects of cognition may be better preserved in older adults who possess higher levels of aero...

This study examined the independent and combined importance of aerobic fitness and body fatness on physiological tolerance and exercise time during weight-bearing exercise while wearing a semipermeable protective ensemble. Twenty-four men and women were matched for aerobic fitness and body fatness in one of four groups (4 men and 2 women in each group). Aerobic fitness was expressed per kilogra...

Background: Greater aerobic fitness is associated with improved cardiovascular health. Traditionally high volume (long duration and low intensity) endurance training (ET) has been used to increase aerobic fitness. Sprint interval training (SIT) is a low volume and high intensity form of interval training. Energy for SIT is produced via both the aerobic and anaerobic metabolic pathways. SIT is t...