Final answer:
The statement that body mechanics help save energy and prevent injury is true. The correct use of body mechanics is essential in daily activities to prevent strain and ensure efficient use of energy. Additionally, energy conversion during physical activities, understanding the statics of the human musculoskeletal system, and the role of the sympathetic nervous system are important related topics.
Step-by-step explanation:
Body mechanics involve the use of one's body in an efficient and safe manner, which most certainly helps save energy and prevent injury. Hence, the statement is True. Proper body mechanics can include the way we sit, stand, lift, carry, and bend, and is critical in all aspects of daily activities. For instance, lifting a heavy object with the legs rather than the back can reduce strain on spinal muscles and prevent back injuries.
When discussing the conversion of energy, in the scenario of a cyclist coasting down and up a hill, original potential energy is transformed into kinetic energy and finally into heat, partially due to friction, explaining why the bicycle stops at a point lower than where it started. Statics and an understanding of lever systems in the body are crucial for comprehending the strains on our muscles and bones during our daily activities.
Moreover, related to the subject of body mechanics and energy, the statement that the sympathetic nervous system enhances digestion to provide more energy for the body is False. Actually, the sympathetic nervous system activates the body’s fight or flight response, diverting blood away from the digestive system and reducing digestive activity.