Energy Transfer in Exercise

These flashcards cover key concepts related to energy transfer in exercise, focusing on various energy systems, metabolic processes, and physiological terms.

Immediate Energy

Also known as the ATP-PCr system; relies on stored phosphocreatine to regenerate ATP for short, high-intensity efforts.

Lactate System

Anaerobic metabolism that produces lactate during high-intensity exercise lasting between 60 to 180 seconds.

Blood Lactate Threshold (LT2 or OBLA)

The point at which lactate production exceeds clearance, leading to increased blood lactate levels.

Lactate Shuttling

The process by which lactate is transported between cells to be used as fuel for energy metabolism.

Maximal Oxygen Consumption (VO2max)

The maximum volume of oxygen that an individual can consume, reflecting their aerobic capacity.

Excess Post-exercise Oxygen Consumption (EPOC)

The amount of oxygen required to restore the body to its resting state following exercise.

Aerobic System

Utilizes oxygen for energy production during prolonged, moderate-intensity exercise.

Oxygen Deficit

The difference between oxygen consumption and the amount that would have been consumed had steady state been reached immediately.

Respiratory Quotient (RQ)

A measure of the ratio of carbon dioxide produced to oxygen consumed, indicating which fuel source is being used.

Interval Training

A training technique that alternates periods of high-intensity exercise with rest or lower-intensity activity.

Type II Muscle Fibers

Fast-twitch muscle fibers that are primarily used in anaerobic activities and have a high glycolytic capacity.

Lactate Production

The creation of lactate during anaerobic metabolism, particularly during high-intensity exercise.

Oxidative Fibers (Type I)

Slow-twitch muscle fibers that are more efficient at using oxygen for energy during prolonged activities.