PURPOSE: To clarify whether pulmonary oxygen uptake kinetics (

τ

V
˙


O

2
p



) at the onset of moderate-intensity exercise can predict acute physiological responses to resistance exercise training (RET). METHODS: We investigated the relationship between

τ

V
˙


O

2
p



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. We measured the anaerobic threshold, peak


V
˙


O
2


and

τ

V
˙


O

2
p



while cardiopulmonary exercising, and the rates of increase in blood lactate (Bla), heart rate (HR), systolic blood pressure (SBP) and rate pressure product (RPP) for a single RET. RESULTS: There were significant positive associations between

τ

V
˙


O

2
p



and the rates of increase in Bla, HR, SBP and RPP during a single RET session (P<0·05). However, the anaerobic threshold and peak


V
˙


O
2


did not significantly affect these parameters. CONCLUSION: The

τ

V
˙


O

2
p



is a useful evaluation index for predicting acute physiological responses to RET.