SN - Energy Balance pt1

bethdrysdale94's version from 2017-03-12 19:47

Section 1

Question Answer
Two factors that influence athletic performancebody mass and composition
What interacts to alter body mass and composition?Physical activity and nutrition
What makes up for the most %energy expenditure in sedentary individuals?resting metabolic rate (70%)
What makes up for the most %energy expenditure for very active individuals?Thermic effect of exercise
What is energy balance?The amount of dietary energy added to or lost from energy stores after all the bodies physiological systems have done all their work for the entire day - OUTPUT
What is energy availability?The amount of dietary energy remaining after exercise training for all other metabolic functions (cell maintenance/growth/repair/immunity etc) - INPUT to bodies physiological systems

Section 2

Question Answer
Carbohydrate4kcal/g, 17KJ/g
Lipid9kcal/g, 37KJ/g
Protein4kcal/g, 17KJ/g
Alcohol7kcal/g, 29KJ/g

Section 3

Question Answer
Why should low energy availability be avoided?impair performance and adaptation to training, and may be harmful to immune, brain, reproduction functions an bone health
What happens to energy balance when energy availability is low?energy balance rises, because metabolism is suppressed by low energy availability
Stubbs et al: 8 lean men living in a lab eating with no restrictions/limitlook up!
energy availability summaryeffects on physiological systems. under voluntary control
energy balance summaryan effect of physiological systems. not under voluntary control. does not indicate energy requirements for health