The effect of warm-up on high-intensity, intermittent running using nonmotorized treadmill ergometry.

The aim of this study was to investigate the effect of previous warming on high-intensity intermittent running using nonmotorized treadmill ergometry. Ten male soccer players completed a repeated sprint test (10 x 6-second sprints with 34-second recovery) on a nonmotorized treadmill preceded by an active warm-up (10 minutes of running: 70% VO2max; mean core temperature (Tc) 37.8 +/- 0.

The effects of acute creatine supplementation on multiple sprint cycling and running performance in rugby players.

The benefits of creatine (CR) supplementation are well documented, particularly during repeated bouts of high-intensity muscular activity. Most published experiments use mass-supported (cycle ergometry) activities as a means of evaluating creatine's efficacy, therefore minimizing any possible adverse effects of increased body mass associated with CR supplementation. This study aims to use both mass-supported and mass-dependent activities to assess the effectiveness of acute CR supplementation on a group of highly trained rugby players.

The oxygen uptake response running to exhaustion at peak treadmill speed.

Purpose: Peak treadmill speed (V(max)), which is the final speed reached and sustained for a minute during a speed-incremented continuous maximal oxygen uptake ([OV0312]O(2max)) test, is an effective predictor of endurance performance. This study assesses the reliability of V(max) and [OV0312]O(2max), and examines the oxygen uptake response while running to exhaustion at V(max).

Methods: Eleven recreationally active runners completed two speed-incremented [OV0312]O(2max) tests (test 1 and test 2) to determine [OV0312]O(2max) and V(max).