Physical Activity (Exercise): Voluntary movement of the body that enhances health, fitness, and well-being, including sports, walking, and daily movements.
Sedentary Lifestyle: A lifestyle characterized by prolonged sitting or inactivity, leading to health issues such as muscle atrophy, osteoporosis, and cardiovascular problems.
Muscle Contraction: The process by which muscle fibers generate force through the interaction of actin and myosin filaments, enabling movement and strength.
Bone Remodeling: The continuous process where old bone tissue is replaced by new tissue, influenced by physical activity and nutrition, essential for bone strength and density.
Energy Metabolism: The biochemical process of converting nutrients into energy (ATP) for bodily functions, involving pathways like aerobic and anaerobic respiration.
1. What does nutrition in the context of sport primarily refer to?
2. Which specific condition characterized by porous and brittle bones is directly associated with a sedentary lifestyle?
3. What is the primary role of physical activity in maintaining the musculoskeletal system?
Physical Activity — definition?
Voluntary movement enhancing health and fitness.
Sedentary Lifestyle — effect?
Leads to muscle atrophy, osteoporosis, and joint issues.
Muscle Contraction — process?
Muscles generate force via actin-myosin interaction.
Bone Remodeling — role?
Replaces old bone, influenced by activity and nutrition.
Energy Metabolism — function?
Converts nutrients into ATP for bodily functions.
Glycogen Storage — location?
Muscles and liver store glycogen as energy reserve.
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