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Doing short bursts of intense exercise might boost heart fitness more than steady, moderate workouts for people with heart disease — on average by a small but measurable amount.
If you're an older adult, having weaker hand grip compared to your weight might be a little linked to a higher chance of dying from any cause, but it doesn't add much info beyond things like blood...
Measuring how powerful your muscles are—relative to your size—might help doctors better predict your risk of dying from any cause, even after considering things like age, belly fat, and medical...
The stronger your upper body muscles are — even just a little bit stronger — the lower your chances of dying from any cause, and this seems to be true no matter how strong you already are.
For middle-aged and older adults, how fast your muscles can generate power might be a better sign of how long you'll live than how strong they are — especially in men.
If middle-aged or older adults don't have much muscle power for their weight — like when pulling motions — they're much more likely to die earlier than those who are stronger, even after accounting...
In teen boys who are healthy, doing six weeks of regular cardio or short, intense sprints improves their fitness, but doesn't change their standard cholesterol numbers—meaning those blood tests might...
In teen boys, short bursts of intense exercise mainly lower free fatty acids in the blood, while steady, moderate exercise changes more types of fats—including sphingolipids and...
Doing moderate cardio for six weeks changes certain fat levels in the blood of healthy teenage boys in ways that might help their metabolism work better.
Doing short, intense sprints for six weeks might lower certain types of fats in the blood of healthy teenage boys, which could mean their bodies are using fat differently in a way that's good for...
Both short, intense sprints and steady, moderate workouts boost teenage boys' stamina just as much after six weeks — either way, their bodies get better at using oxygen.
If you're trying to lower your bottom blood pressure number, going for a steady, moderate workout might work better than doing short, intense sprints — especially if those sprints last 30 seconds or...
If you're trying to lower your bottom blood pressure number, going for long, steady jogs might work better than short, intense sprints — especially if you're only doing the sprints for less than 8...
Doing steady, moderate workouts might boost your heart and lung fitness more than super intense but short sprints, even though the moderate workouts take longer.
Doing short bursts of all-out exercise for at least 8 weeks might lower your top blood pressure number more than steady, moderate workouts—especially if each burst is under 30 seconds.
Both short, intense sprints and steady, moderate workouts can slightly lower your resting blood pressure—and they work about the same for people who don’t exercise much or have normal blood pressure.
Older people and younger people, as well as men and women, have similar muscle strength at the level of individual muscle fibers in a major leg muscle — meaning the muscle fibers themselves are just...
Young men tend to have faster and bigger type I muscle fibers than young women, but this difference disappears in older adults and isn't seen in other fiber types — so the muscle differences between...
Most people’s leg muscles are made up of slow-twitch fibres, and older women especially lose the fast-twitch fibres that help with quick movements, replacing them with mixed-type fibres that aren’t...
When it comes to leg muscle strength, the differences between men and women or young and older people are more about how the whole muscle works together—not just the individual muscle fibers. Things...
Men and women's muscles work differently — especially when it comes to strength and speed — and these differences matter more than getting older. Young men tend to have bigger, faster type I muscle...
When young adults stop working out for 12 weeks and then start again with intense training, their fitness improves just as much as it did the first time—like their body doesn’t remember being in...
When young adults get back into training, certain genes in their muscles 'remember' past fitness thanks to chemical tags on DNA—these genes stay more active and less methylated, like a fitness memo...
After young adults stop working out intensely for 12 weeks, their muscles still keep certain chemical 'tags' that changed during training—even though their muscle energy function goes back to normal.