Improving Body Composition May Reduce the Immune and Inflammatory Responses of Firefighters Working in the Heat.

Objective: We hypothesized that different body composition and fitness of firefighters would affect immune and inflammatory activity after working in the heat.

Methods: Forty-two firefighters worked in the heat (100 ± 5 °C). Changes in leukocytes, platelets, tumor necrosis factor (TNF-α), and C-reactive protein (CRP) were analyzed based on body composition (DXA) and aerobic fitness (VO2max).

Validity of the SenseWear Armband to assess energy expenditure during intermittent exercise and recovery in rugby union players.

Portable wearable devices that assess energy expenditure during intermittent exercise and recovery would be useful in team sports. Fourteen state-level male rugby union players (mean ± SD: age, 22 ± 4 years; body mass, 88.8 ± 11.

Relationship between reactive strength variables in horizontal and vertical drop jumps.

The aim of this study was to investigate the relationship between reactive strength in a vertical and a horizontal drop jump (DJ). Subjects (n = 28) with previous jump training experience, performed 6 vertical DJs and 6 horizontal DJs from a 0.4-m box.