Effect of weight training exercise and treadmill exercise on post-exercise oxygen consumption

Area of Science:

• Exercise Physiology
• Sports Science
• Metabolic Studies

Background:

• Understanding postexercise oxygen consumption (EPOC) is crucial for accurately assessing total energy expenditure.
• Comparing EPOC between different exercise modalities like weight training and aerobic exercise provides insights into metabolic responses.

Purpose of the Study:

• To compare the effect of weight training (WT) and treadmill (TM) exercise on postexercise oxygen consumption (VO2).
• To determine if exercise intensity and duration matching influences the postexercise metabolic response.

Main Methods:

• Fifteen males performed 27-minute bouts of weight training and treadmill exercise at matched VO2 rates.
• Oxygen consumption was measured continuously during exercise and at 30, 60, and 90 minutes into recovery.

Main Results:

• Oxygen consumption during WT (1.58 L/min) and TM exercise (1.55 L/min) were not significantly different.
• Total oxygen consumption in the first 30 minutes of recovery was significantly higher after WT (19.0 L) compared to TM exercise (12.7 L).
• VO2 at 60 and 90 minutes into recovery did not differ significantly between the two exercise types.

Conclusions:

• Weight training elicits a greater elevated postexercise oxygen consumption in the initial 30 minutes compared to treadmill exercise when matched for VO2 and duration.
• Total energy expenditure from weight training may be underestimated if solely based on exercise oxygen consumption.
• These findings highlight the importance of considering EPOC in metabolic calculations for resistance exercise.