1. B: Physical education is concerned with the student’s quality of life. Cultural influences, home and community environment and heredity all play a role in obtaining and maintaining a healthy body and mind. An effective program considers all these factors when designing a curriculum to teach the skills necessary to attain a healthy lifestyle.
2. C: A motor skill is any activity that requires directed movement of skeletal muscles. Proper motor function relies on the brain, skeleton, joints and nervous system working together to accomplish a task. Gross motor skills control and coordinate the large muscle groups. Fine motor skills control and coordinate the small muscles groups and often entail very precise movement to accomplish a task.
3. D: Biomechanics researchers apply engineering principles to human biological systems and analyze the results. Studies are done on all levels from molecules and cells to tissues and organs. The findings are used to help foot problems in diabetics, prevent bone loss during spaceflight, and develop new rehabilitation methods to treat sports injuries.
4. A: Childhood and adolescent obesity is a serious problem with emotional and physical consequences. Overweight youngsters are often teased and bullied, which leads to self-esteem issues. Childhood obesity often continues into adolescence and adulthood when health-related problems become evident and create another set of issues. Childhood obesity is becoming a major public health crisis.
5. B: Physical activity is bodily movement that causes energy expenditure. Benefits are felt with any activity but scheduled and structured exercise enhances its effects. The National Institutes of Health said even short ten minute bursts of activity, as long as it adds up to at least 30 minutes every day for adults and adolescents and 60 minutes a day for children, provides benefits.