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When a nerve in the wrist is cut and then heals, making nearby muscles work together better, it seems like the body starts using those muscles in a more organized way again.
When certain nerves in the arm are completely cut, the muscles don't work in the right order because the nerve fibers grow back in the wrong directions.
When certain nerves in the arm are completely cut, the way muscles respond doesn't follow the usual pattern where smaller movements happen before bigger ones.
When young men do a specific type of hard strength training, their bodies send strong signals to build muscle for hours afterward.
When you lift weights, how hard you push or pull (the force) matters more for muscle growth signals than how long you hold the weight, based on comparing workouts that take the same time but use...
When young men do one set of really tiring weightlifting, it gives the smallest boost to muscle-building signals right after exercise, compared to doing max-stretch moves or multiple sets that take...
When young men do a certain type of tough exercise, their fast-twitch muscle fibers show more chemical changes than other fibers, which means different muscle types react differently to hard workouts.
When young men do a specific type of hard weight training that focuses on lowering weights slowly, it triggers more muscle-building signals in their bodies compared to other common workout styles,...
This research suggests that in both younger and older people, the way muscles activate their fibers follows the same basic rule: smaller muscle fibers get called into action before bigger ones. This...
As people get older, their muscles change in a way that makes certain muscle parts bigger and faster-acting, which is like rewiring how the muscles work.
When muscles grow from lifting weights, some types of muscle fibers might not get as strong or reliable as others, according to the numbers.
When muscles grow bigger overall, it's because both slow-twitch and fast-twitch muscle fibers get bigger. But if one type grows more than the other, it means the other type grows less in comparison.
People aren't very good at guessing how close they are to muscle failure when doing many reps of weightlifting.
Lifting lighter weights many times in a row might help grow certain slow-twitch muscles better because they stay working longer.
When you lift light weights until you can't anymore, it fully uses your fast-twitch muscle fibers even though the weight isn't heavy.
Your muscles use smaller, less powerful fibers first when you start moving, and only bring in the bigger, stronger fibers when you need more power or get tired.
Lifting heavier weights makes your fast-twitch muscle fibers grow bigger than lifting lighter weights does.
Lifting lighter weights with more reps might make your slow-twitch muscles grow bigger than lifting heavier weights with fewer reps.
When you start lifting weights, your muscles build new protein faster in the first week than they do after 10 weeks, even if you keep training.
Lifting weights until you can't do any more reps makes your muscles grow just as much, no matter how heavy or light the weights are.
When young men lift weights to get stronger and build bigger muscles, the claim says that getting stronger doesn't really mean you'll get bigger muscles, and vice versa—they're mostly separate things.
When young men lift weights to build muscle, their muscle-building process speeds up at first but slows down after 10 weeks, even if they keep increasing the difficulty.
When healthy young men lift weights until they're too tired to continue, their muscles grow about the same amount in both their arms and legs, no matter how heavy the weights are.
Scientists looked at only 8 small studies about how different weight training affects muscle growth. They found there isn't enough research yet to say for sure which exercises work best for building...