After a tough squat workout, both younger and middle-aged guys who regularly lift weights show similar drops in their ability to fully activate their leg muscles — and that drop lasts for at least a...

Middle-aged guys who lift weights don't bounce back as quickly after a tough leg workout as younger guys do — they're weaker and less powerful for a few days, even if they're just as trained.

During intense knee extension exercise, most of the loss in muscle strength comes from chemical changes within the muscle fibers, not from the nervous system reducing its signals to the muscles.

You might not feel stronger right after this training, but your strength keeps going up for weeks after you stop — the best gains happen when you’re resting.

Lifting weights slowly (eccentric) or quickly (concentric) both make your quads stronger in about 10 weeks — and you don’t need to be sore or damaged to get stronger.

After doing hard leg pushes with 5-minute breaks, people’s muscles stay stronger and more activated afterward than after 2-minute breaks, meaning they don’t get as tired.