Chapter 5: Metabolic Energy System Training Flashcards
Pulmonary ventilation
a process which brings oxygen from the air, across the alveolar membrane, and into the blood to be carried by hemoglobin
Cardiac output
amount of blood pumped by the heart per minute
Stroke volume
amount of blood pumped from the ventricles with each contraction
Aerobic system
use of carbohydrates and fat in the presence of
oxygen to produce ATP; most efficient
Anaerobic system
ATP production without using oxygen; high power, limited capacity; ATP-CP, glycolysis
ATP-CP system
uses creatine phosphate instead of carbohydrates to rapidly produce ATP
Glycolysis
uses glucose and glycogen to produce ATP without oxygen
Anaerobic threshold
the point at which the body can no longer meet its demand for oxygen and anaerobic metabolism predominates; a.k.a. lactate threshold
Maximal heart rate calculation:
Simple estimate = 220 – age
Regression formula = 208 – (0.7 × age)
Karvonen method = [HRmax – resting heart rate] x desired % for training + resting heart rate
Heart rate training zones:
Zone 1—builds aerobic base; warm-ups and recovery; 65-75% HRmax; RQ of 0.80 to 0.90
Zone 2—increases anaerobic and aerobic capacity by straddling energy systems; 76-85% HRmax; RQ of 0.90 to 1.0
Zone 3—only used in interval training; increases speed, power, metabolism, and anaerobic capacity; 86-95% HRmax; RQ greater than 1.0
Steady-state training
consistent, prolonged intensity
Long-slow distance
maintains slower speed over longer distances
Race pace
the pace in time or percent of HRmax an athlete would use in competition
Percent of HRmax pace
intensity determined based on actual or estimated HRmax
Interval training
high-intensity efforts with bouts of recovery between each exertion; work to rest ratios ranging from 1:1 to 1:5