Final answer:
Upper body arms falling forward may be caused by poor posture, lack of strength in the upper body muscles, certain medical conditions, or excessive upper body weight.
Step-by-step explanation:
Causes of Upper Body Arms Falling Forward
Upper body arms falling forward can be attributed to several factors, including poor posture, lack of strength in the upper body muscles, medical conditions such as fractures or disorders of the upper limb bones, and excessive weight in the upper body.
Poor posture can create a torque around the hips that forces the arms to fall forward, requiring greater muscular effort to maintain position. This strain, if persistent, can be associated with prolonged muscle action leading to muscle strain.
Furthermore, fractures of upper limb bones, such as those caused by a hard fall, can drastically affect the functional ability of the arms and lead to a forward positioning due to compensatory mechanisms or weakness.
Weak upper body muscles may not adequately support the skeleton, thus causing the upper body to lean forward. Lastly, excessive weight can contribute to the strain on muscles, further promoting the forward fall of the arms.