Respuesta :
Lower caloric intake during even a short period can result in loss of muscle mass even in the setting of adequate energy intake between the ages of 25 and 80 years.
Simply said, muscle mass refers to the total amount of skeletal, smooth, and cardiac muscles in your body. Along with bone mass and fat mass, it can be quantified as a component of your overall body composition. Skeletal muscle is made up of myofibers, which are solitary muscle cells known as muscle fibers that are connected and surrounded by a connective tissue called the epimysium. In order to produce a fascicle, 20–80 muscle fibers must be gathered together. Fascia, a connective tissue outside the epimysium, is what separates the muscles. Muscles and bones are joined by tendon.
Between the ages of 25 and 80 years, a 40-50% decrease in muscle mass can be observed due to all of the
following except:
A. Loss of motor units
B. Reduced muscle fiber size, particularly type II fibers
C. Muscle fiber atrophy
D. Lower caloric intake
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