from journal Applied Physiology
Using heavy weights to build strength and
muscle is traditional workout wisdom. A
new study from McMaster University in
Canada challenges that notion by
providing evidence that lighter weights are
just as effective. Researchers wrote in the
journal Applied Physiology that it doesn’t
matter if the weights are heavy or light
because fatigue is the key. In two groups
of experienced weight lifters, one group
lifted heavier weights and the other lighter
weights—each to the point of exhaustion.
Researchers analyzed the muscle and
blood samples from each group and found
gains in muscle mass and fiber were
virtually identical. Even though the men in
the study were experienced weight lifters,
researchers say for those of us who are
“mere mortals” lighter weights can bring
improved strength without compromise.