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Light weights to fatigue build strength and muscle like heavy weights, study finds.
A new study finds that lifting lighter weights to muscle fatigue produces strength and muscle gains similar to heavy lifting, challenging the idea that heavy weights are necessary.
Researchers at McMaster University studied young, untrained men who performed exercises with either heavy or light weights until failure, seeing comparable results after 10 weeks.
The key factor was effort, not weight load, suggesting people can choose routines that suit their preferences, joint health, or time.
Individual results varied, highlighting genetic differences in response.
Experts say consistency and effort matter more than weight, making resistance training more accessible.
Los pesos ligeros para la fatiga construyen fuerza y músculo como los pesos pesados, según un estudio.