Metabolic flexibility is the ability to shift efficiently between fat and carbohydrate use based on energy demands
Metabolic Flexibility

Metabolic Flexibility

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Glycogen is the stored form of carbohydrate in muscles and the liver used to fuel exercise
Glycogen

Glycogen

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Carbohydrate availability describes how much stored and circulating carbohydrate is accessible to fuel exercise
Carbohydrate Availability

Carbohydrate Availability

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Fuel utilisation describes how the body uses carbohydrates and fats to meet energy demands during exercise
Fuel Utilisation

Fuel Utilisation

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Fat oxidation is the process by which the body breaks down fat to produce energy during rest and exercise
Fat Oxidation

Fat Oxidation

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Running Economy refers to how much energy or oxygen a runner uses to maintain a given running speed
Running Economy

Running Economy

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Ventilatory Threshold is the exercise intensity at which breathing increases faster than workload due to rising metabolic demand
Ventilatory Threshold

Ventilatory Threshold

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Aerobic Base is the level of aerobic fitness that allows an athlete to sustain steady effort, recover efficiently, and support higher-intensity training
Aerobic Base

Aerobic Base

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Lactate Threshold is the highest exercise intensity that can be sustained before lactate accumulates faster than the body can clear it
Lactate Threshold

Lactate Threshold

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VO₂ Max is the maximum rate at which the body can take in and use oxygen during intense exercise
VO₂ Max

VO₂ Max

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HRV measures the variation in time between heartbeats and reflects how well the body is recovering and adapting to stress
HRV

HRV

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Zone 2 training is sustained low-intensity exercise performed at an effort that can be maintained comfortably for long periods
Zone 2 Training

Zone 2 Training

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