A Brazilian study may have found the answer to a common dilemma in the fitness world. Here’s what to know
The dilemma is ancient and afflicts all fans of bodybuilding and strength training: it is more effective to train with a load less and make a greater number of repetitions, or is a heavier load and fewer reps preferable? A recent study may have an answer that will satisfy both sides…
research
Some Brazilian scientists have discovered that different approaches to training of muscle strengtheningFocusing on high loads and low reps or low loads and high reps both lead to the same muscle growth.
Weight versus reps
A team of researchers from the State University of Campinas in Brazil divided 18 volunteers into two groups, each of which followed a regimen of training different resistant. The first group performed high-load exercises with fewer repetitions, lifting up to 80% of their body weight. The second group they performed low-load exercises with higher repetitions, lifting a maximum of 30% of their body weight, but repeating the exercises until their muscles could take no more.
the results
After 8 weeks, the researchers measured changes in the body composition of the participants. They collected blood samples before, during and after each training session, looking for any metabolites that would indicate muscle growth. Subsequently they measured how much muscle each person had they were activated by surface electromyography. The result? Despite different training regimens, both groups showed no difference in muscle growth or metabolic stress. “It’s still not entirely clear whether the key to muscle hypertrophy is the load or the number of repetitions. Our study shows that both types have the same effect,” he explains Renato Barroso, professor at the School of Physical Education of the University of Campinas (Brazil). Although muscle activation was greater in the group that lifted heavier weights, metabolic stress was in fact similar in the two groups. “The resemblance of metabolic responses suggests that both types of training may act on the same pathways to induce hypertrophy.”