29 Questions
What is the primary source of energy for short-term, high-intensity activities lasting 8-10 seconds?
Creatine phosphate
What is the main principle fuel for long-term, low-intensity activities?
Fatty acids
What happens to the fuel selection as exercise intensity increases?
Increase use of carbohydrates as a source
Which factor enhances glycogen sparing and the use of fat during exercise?
Increase in oxidative enzymes
At what exercise intensity is the 'fat-burning zone' typically observed?
Lower intensity
What is the primary benefit of physical activity on muscle performance?
Increased muscle hypertrophy
What is the sum of the energy used for basal energy expenditure, physical activity, and the thermic effect of food?
Total energy expenditure
What are the recommended minutes of moderate-intensity aerobic exercise per week?
150 minutes
What is the maximum oxygen uptake during exercise known as?
VO2 max
Which nutrient is needed for gene expression, production of sugar ribose, and RNA synthesis during pregnancy?
Thiamin
What is the primary role of Choline during pregnancy?
Stem cell proliferation and spinal cord structure
Which micronutrient is needed for the synthesis of thyroid hormones during pregnancy?
Iodine
What is the primary function of Vitamin A during pregnancy?
Cell differentiation and development
Which nutrient is primarily responsible for the production of milk components and movement of milk through ducts to the nipple during lactation?
Calcium
What is the composition of colostrum, the immature milk produced in the first days after delivery?
Rich in protein and immune factors
What triggers the release of milk during lactation?
Oxytocin
What is the impact of toxin exposures on breastmilk contaminants?
Toxin exposures can affect the health of the embryo and fetus
During pregnancy, what can low intake of Vitamin A cause?
Low birth weight and premature birth
What is the primary role of Zinc during pregnancy?
Formation of new maternal and fetal cells
What does the respiratory quotient (RQ) measure?
CO2 released/O2 absorbed at cellular and blood levels
What factors impact the ability to deliver and use oxygen for ATP production?
Genetic factors and training
What do exercise and nutrition needs depend on?
Duration, intensity, and frequency
What is vital for hemoglobin production and energy metabolism, with complex regulatory mechanisms?
Iron
What does iron deficiency lead to?
Microcytic, hypochromic anemia
What does iron overload result in?
Hemochromatosis
What is essential for regulating body temperature and maintaining oxygen transport?
Hydration
What role do various vitamins and minerals play in?
Energy metabolism and bone health
What does iron regulation involve?
Hepatic production of hepcidin and various iron-related enzymes
What measures the ratio of CO2 released to O2 absorbed at cellular and blood levels?
Respiratory quotient (RQ)
Study Notes
Cardiorespiratory Fitness and Nutritional Needs in Physical Activity
- Oxygen utilization during intense exercise is an indicator for aerobic endurance
- Genetic factors and training impact the ability to deliver and use oxygen for ATP production
- Respiratory quotient (RQ) measures CO2 released/O2 absorbed at cellular and blood levels
- Different macronutrients have varying respiratory exchange ratios (RER)
- Exercise and nutrition needs depend on duration, intensity, and frequency
- Various vitamins and minerals play crucial roles in energy metabolism and bone health
- Hydration is essential for regulating body temperature and maintaining oxygen transport
- Iron is vital for hemoglobin production and energy metabolism, with complex regulatory mechanisms
- Iron is absorbed as heme and non-heme forms, with dietary factors influencing absorption
- Iron regulation involves hepatic production of hepcidin and various iron-related enzymes
- Iron deficiency leads to microcytic, hypochromic anemia, while iron overload can result in hemochromatosis
- The process of fertilization and embryonic development is described in detail, including ovulation, blastocyst formation, and fetal growth
Test your knowledge of cardiorespiratory fitness and nutritional needs for physical activity with this quiz. Explore topics like oxygen utilization, macronutrients, vitamins, minerals, hydration, and the role of iron in energy metabolism and hemoglobin production. Perfect for those interested in exercise science, nutrition, and human physiology.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
