Muscle contraction is the tightening, shortening, or lengthening of muscles when you do some activity. It can happen when you hold or pick up something, or when you stretch or exercise with weights.

As individuals age, maintaining muscular health becomes increasingly crucial, where the loss of muscle mass and strength is linked to a higher risk of falls and reduced physical activity. Now, ...

Measurement of the phase angle (PhA) from bioelectrical impedance analysis (BIA) can be explored as a quick and non-invasive method to measure muscle activity and strength, especially useful in people ...