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When young men gain muscle size through combined high- and low-intensity training, their strength per unit of muscle increases less than when they gain strength without muscle growth, meaning each...
Young men who perform only high-intensity isometric elbow exercises without pushing to muscle fatigue do not gain more muscle size, but still get stronger, suggesting strength can improve without...
For young men, performing high-intensity isometric elbow flexor exercises followed by low-intensity exercises to muscle fatigue leads to greater muscle growth in the upper arm compared to...
Men and women gain similar amounts of strength from isometric elbow training over six weeks, suggesting that sex doesn't affect how quickly the nervous system adapts to this type of exercise.
Because the biceps muscle fibers run mostly straight, any increase in strength per unit of muscle size is unlikely to be caused by fibers angling differently — other factors like improved nerve...
The biceps and other elbow muscles don't get stronger faster than other muscles when trained isometrically — their improvement is about the same as what's seen in other muscle groups.
After six weeks of static elbow training, the muscles get slightly bigger (about 5.4%), but this growth doesn't explain why strength increases so much more — the strength gain is likely due to the...
After six weeks of holding heavy weights in a static position, the muscles that bend the elbow become about 14.5% stronger, and this improvement happens similarly in men and women.
In older adults having cancer surgery, those with frailty and weaker leg muscles are much more likely to have complications after surgery, indicating that improving muscle health before surgery could...
In older adults having cancer surgery, changes in leg muscles are more closely linked to frailty than changes in arm muscles, indicating that leg muscle health may be a better indicator of overall...
In older adults having cancer surgery, thinner muscles in the front of the shin are strongly linked to frailty, especially in those most severely affected, making this muscle a particularly sensitive...
In older adults having cancer surgery, the calf muscle (medial gastrocnemius) shows more fatty infiltration in those who are prefrail or frail, suggesting it may be an early sign of muscle...
In older adults having surgery for gastrointestinal cancer, thinner and more fatty-looking leg muscles, especially in the front of the thigh and shin, are linked to higher frailty and more...
This ultrasound method works well in healthy young adults, but it has not been tested in people with jaw disorders, children, or older adults, so we don’t know if it works for them.
When comparing this new ultrasound method to CT scans, the average difference in masseter thickness measurements is less than 0.6 mm, and the variation is consistent across individuals, meaning the...
Two different trained professionals using this ultrasound method get nearly the same measurements of the masseter muscle, with agreement levels above 0.87, meaning the technique is reliable even when...
When the same person uses this new ultrasound method to measure the masseter muscle twice, the results are nearly identical, with less than 1% variation, meaning the technique is very consistent when...
A new method for placing an ultrasound probe at a specific point on the face produces muscle thickness measurements that closely match those from CT scans in healthy adults, with less than 6% average...
If you're using light weights with blood flow restriction to build your biceps, it doesn't matter whether you do incline curls or preacher curls—both will grow your muscles equally, so choose based...
Using light weights with blood flow restriction can build muscle in just three weeks without causing swelling or inflammation that might falsely appear as muscle growth.
Using light weights with restricted blood flow for three weeks can significantly increase arm muscle size in trained men, even without lifting heavy weights, because the restricted blood flow itself...
In trained men, performing elbow curls with the arm in a backward or forward position, using light weights and restricted blood flow for three weeks, leads to nearly identical muscle growth in the...
Because portable ultrasound measurements of muscle thickness vary too much between technicians, it should not be used alone to diagnose muscle loss in older adults.
When measuring fat located deeper in the abdomen, portable ultrasound shows slightly less consistency between different technicians, with agreement slightly lower than for fat just under the skin.