Muscular Fatigue and Nutritional and Hydration Strategies

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

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.

Fatigue

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

Multifactorial

Involves or is dependent on several factors or causes.

Metabolic by-product

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

Fuel depletion

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

Intermittent

Short periods of work followed by a period of rest.

Carbohydrate loading

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

Hypoglycaemia

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

VO2 max

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

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.

Lactate inflection point (LIP)

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

pH

A measure of the acidity or alkalinity of a substance.

Thermoregulation

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

Homeostasis

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

Hyperthermia

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

Vasodilation

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

Vasoconstriction

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

Muscle protein synthesis

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

Carbohydration

Combining hydration and refuelling at the same time.

Dehydration

The loss of too much fluid from the body.

Gastrointestinal tolerance

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