What is the effect of resistance exercise on basal metabolic rate?

Resistance exercise has a well-documented positive effect on basal metabolic rate (BMR), primarily due to the increases in muscle mass that typically accompany such training. When muscle mass increases, the amount of energy required to maintain that muscle also increases, leading to a higher BMR. This effect plays a significant role in overall metabolism because, unlike fat tissue, muscle tissue consumes more energy at rest.

Engaging in resistance training can result in small to moderate increases in BMR over time. Particularly, when comparing the typical outcomes of individuals incorporating resistance training into their routine versus sedentary individuals, the increase in BMR can be quite evident. This variation can be influenced by factors such as the intensity of the resistance exercises performed and the individual’s overall fitness level.

It's important to note that while there are elements of improvements in metabolic rate attributed to resistance training, these effects are generally more modest compared to the significant increases seen with intense aerobic training or other vigorous physical activities. Thus, a small increase is often the most accurate descriptor of the average impact of resistance exercise on BMR in most individuals, as it reflects the typical change experienced following a consistent resistance training regimen.