What is our body's direct energy source?
what are the 3 energy systems?
-anaerobic energy system
-aerobic energy system
*allows us to use macros
characteristics of Phosphagen Energy system (2)
-stores of high energy phosphates
*ATP, Creatine Phosphate
-known as immediate energy system
Characteristics Anaerobic Energy System (2)
-involves only carbohydrates
-does not require oxygen
*known as anaerobic glycolysis
Characteristics of Aerobic Energy System (2)
-involves all macronutrients
*known as oxidative system
what can low carbohydrate intake cause? (2)
muscle protein breakdown and loss of muscle mass
What does gluconeogenesis do?
forms glucose from proteins
What is used during powerful short burst activity (shotput,pitch,jump)?
small storage of ATP source
What system is used during short sprints or activity? (10 sec. of intense, all out activity)
what system is used during long sprint or activity (1-3 mins of all-out activity)? (3)
Anaerobic but with help from the other 2 systems
what system is used during long duration, non-steady-state activity(4 to 6 minutes, all out acitivty) (2)
aerobic system wth help from anaerobic
What system is used during long-duration, steady state aerobic activity(30 min continuous activity)
aerobic system with little help from the other 2 systems
Lecture 1: goals of the course