The effectiveness of weight training is not solely determined by the amount of weight lifted, according to exercise scientists. Many experts now agree that heavier weights are not always superior and that a moderate approach can be highly appropriate for achieving results.
The ideal weight or "load" for resistance training is dependent on an individual's specific goals. For those aiming to maximize strength gains, lifting heavy weights is generally considered essential. This aligns with the principle of specificity in exercise science, which posits that the body adapts and improves in response to the demands placed upon it. Therefore, to excel in activities that require maximal force, such as powerlifting or Strongman competitions, consistent training with the heaviest possible loads is necessary.
However, the scientific consensus indicates that various forms of resistance training, including those using moderate loads, can be effective in generating desired outcomes. The American College of Sports Medicine (ACSM) published a position stand earlier this year, drawing on findings from 137 reviews, which emphasized the broad applicability of different resistance training methods for achieving results.