Nutrition and Physical Activity Chapter 13 Exam Questions and Answers Rated A+
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Nutrition and Physical Activity
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Nutrition And Physical Activity
Nutrition and Physical Activity Chapter 13 Exam Questions and Answers Rated A+
physical activity - Answers any muscle movement that increases energy expenditure
leisure time physical activity - Answers any activity unrelated to a person's occupation
e.g. giving, walking, biking
includes exerc...
Nutrition and Physical Activity Chapter 13 Exam Questions and Answers Rated A+
physical activity - Answers any muscle movement that increases energy expenditure
leisure time physical activity - Answers any activity unrelated to a person's occupation
e.g. giving, walking, biking
includes exercise - purposeful, planned, physical activity
physical fitness - Answers state of being which is created by the interaction between nutrition and
physical activity
physical fitness includes: cardiorespiratory fitness, musculoskeletal fitness, flexibility, body composition
cardiorespiratory fitness - Answers -determines how long you can continue a task, whether it is climbing
stairs, raking leaves, or running a race
-requires strength but also involves the cardiovascular and respiratory systems
musculoskeletal fitness - Answers -muscle strength and endurance enhance the ability to perform tasks
such as pushing or lifting
-increased by repeatedly using muscles in activities that require moving against a resisting force
-strength training or resisting training (weight lifting)
flexibility - Answers -determines range of motion
-being flexible may reduce the risk of pulled muscles and tendons
body composition - Answers -exercise builds and maintains muscle
-individuals who are physically fit have a greater proportion of lean body tissue than unfit individuals of
the same body weight
overload principle - Answers the more you do, the more you're capable of
what region in Canada has the most physically active population? least? - Answers most is BC
least is manitoba and maritimes
what diseases are strongly affected by physical inactivity - Answers osteoporosis, stroke, type 2
diabetes, heart disease, colon cancer, breast cancer, hypertension
, what gender is more physically inactive? - Answers females
eating for exercise is an issue of: - Answers fuel, hydration, nutrients
What is the fuel for physical activity? - Answers ATP
Adenosine triphosphate (ATP) - Answers -the energy carrying molecule in the body
-ATP must be generate continuously since muscles have only enough ATP for 1-3 seconds of activity
-ATP provides energy for all body processes
What do muscles do after depleting ATP stores? - Answers they turn to other sources:
-Creatine phosphate (CR) stores some energy that can be used to make ATP
- Creatine phosphate stores enough energy for 3-15 seconds of maximal physical effort
(e.g. sprinting, jumping, for very brief periods of time)
During first 15s of exercise, what fuel is used? What happens after that? - Answers -ATP in muscles is
used for the first 1-3 s of activity
-then for the next 8-10s Phosphocreatine stores are used
-after the creatine phosphate stores have been used up, the lungs still haven't had enough time to
produce O2 so anaerobic metabolism must occur, this lasts for the first 2-3 min of exercise
-after his aerobic metabolism occurs
-both aerobic and anaerobic metabolism use carbohydrates to produce ATP
what is the primary carbohydrate used to generate ATP? - Answers glucose
differences between aerobic and anaerobic metabolism - Answers -anaerobic only occurs when there is
no O2 present, and breaks pyretic acid into lactic acid and 2ATP (thats why lactic acid builds up when
you are doing sprints or something like that)
-aerobic acid occurs when O2 is present and occurs in a series of steps that include CAC and ETC, this
results in the production of 36ATP per one glucose (through glycolysis, CAC, ETC)
-anaerobic metabolism is used for short term energy (2-3 min), aerobic is for long term energy
when are fats (triglycerides) metabolized to generate ATP? - Answers -during low intensity exercise
-for exercise of long duration
-triglycerides are a very abundant energy source, even in lean people
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