Measuring Intensity of Exercise

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Presentation transcript:

Measuring Intensity of Exercise

Lactate Sampling Accumulation of blood lactate OBLA- when does it occur? Intensity- measured on treadmill Why? Predict exhaustion point/ anaerobic threshold

Explain the term Lactate Sampling Taking blood samples (to measure the level of lactic acid) Ensures training is at the correct intensity/monitor improvements over time Provides accurate/objective measure Measures OBLA/lactate threshold/occurs at 4 mmols

Respiratory Exchange Ratio Amount of O2 consumed (VO2) ______________________________________________________________________ Amount of CO2 produced (VCO2) Quantity of O2 consumed against quantity of exhaled CO2 Higher intensity ex- consume more O2, produce more CO2.

Linked to intensity of exercise Lower intensity use fat- beta oxidation Higher- glycogen RER>1 Using CHO RER 0.7 Using FAT Predicts proportion of fuel being used- get close to VO2max

Explain the term RER (Respiratory Exchange Ratio) – ratio of carbon dioxide released compared to oxygen used by the body Estimates use of fats and carbohydrates used during exercise/calculates energy expenditure Tells if performer working aerobically/anaerobically/energy system used RER close to 1 performer using carbohydrates/close to 0.7 using fats/respiratory quotient

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