Can become weaker. This is due to With age, muscles
With age, muscle can become weaker. This is due to .

A. Connections between nerves, which cause more pain and therefore less use
B. Damage from everyday use and injuries that accumulate over time.
C. Disconnections between motor nerves and muscle fibers.
D. Difficulties that occur during muscle growth and repair.

1. body tissue that is connected to and moves the bones in the body hypertrophy 2. the ability of a muscle to move a weight repeatedly, or for an extended period of time tendon 3. the increase in the size of a muscle fiber in response to resistance training muscle strength 4. the most amount of weight a muscle can move at a single time skeletal muscles 5. the decrease in the size and strength of a skeletal muscle when it is not used atrophy 6. strong body tissue that connects the muscles to the bones muscle endurance

When a researcher debriefs her participants, she: provides a detailed explanation of the study. removes their undergarments. tells them they can stop taking part at any time. provides an detailed explanation of the study, and tells them they can stop taking part at any time.

The benefits of cardiovascular exercise include a improved hearing b reduced depression c reduced appetite d decreased stamina