Muscular Fatigue and Nutritional and Hydration Strategies

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Flashcards covering Muscular Fatigue and Nutritional and Hydration Strategies for VCE Physical Education.

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21 Terms

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Fatigue

The point at which the body’s ability to sustain a given level of intensity is reduced, ultimately resulting in the working muscles producing less force and less rapid muscular contractions, leading to a decline in performance.

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Fatigue

An exercise-induced reduction in the ability of muscles to produce force or power.

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Multifactorial

Involves or is dependent on several factors or causes.

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Metabolic by-product

A substance produced because of chemical reactions within the body associated with the production of energy for ATP resynthesis.

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Fuel depletion

The depletion of the body’s energy fuels, which, through their breakdown, allow ATP resynthesis to occur.

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Intermittent

Short periods of work followed by a period of rest.

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Carbohydrate loading

A nutritional strategy in which muscle glycogen stores are maximised prior to endurance events.

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Hypoglycaemia

When blood sugar levels have dropped too low due to prolonged strenuous activity and depleted glycogen stores.

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VO2 max

The maximum amount of oxygen per minute that can be taken in, transported and used by the body for energy production.

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Hitting the wall

A term used in endurance sports to describe the sudden feeling of extreme fatigue associated with the depletion of glycogen stores in the muscle and liver.

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Lactate inflection point (LIP)

The last point where lactate entry into and removal from the blood are balanced.

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pH

A measure of the acidity or alkalinity of a substance.

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Thermoregulation

The processes the body uses to maintain its core internal temperature.

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Homeostasis

The ability of the body to maintain a stable internal environment.

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Hyperthermia

High body temperature caused by a failure of the heat-regulating mechanisms of the body.

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Vasodilation

The process whereby blood vessels increase their internal diameter to increase blood flow.

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Vasoconstriction

The process whereby blood vessels narrow their internal diameter to reduce blood flow.

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Muscle protein synthesis

The process of producing new muscle protein to maintain and build muscle.

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Carbohydration

Combining hydration and refuelling at the same time.

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Dehydration

The loss of too much fluid from the body.

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Gastrointestinal tolerance

The ability to digest or fully metabolise a food/drink.