Pulmonary oxygen uptake on-kinetics can predict acute physiological responses to resistance exercise training in healthy young men.

Purpose: To clarify whether pulmonary oxygen uptake kinetics ( ) at the onset of moderate-intensity exercise can predict acute physiological responses to resistance exercise training (RET).

Methods: We investigated the relationship between and acute metabolic and hemodynamic responses to a single RET session in 27 healthy young adult men. Cardiopulmonary exercise was on a cycle ergometer, and a single RET at 30% or 60% of one-repetition maximum was on a bilateral leg-extension machine.

The very low-frequency band of heart rate variability represents the slow recovery component after a mental stress task.

The very low-frequency (VLF) band of heart rate variability (HRV) has different characteristics compared with other HRV components. Here we investigated differences in HRV changes after a mental stress task. After the task, the high-frequency (HF) band and ratio of high- to low-frequency bands (LF/HF) immediately returned to baseline.