Exercise Physiology Quiz & Flashcards

The ATP-PC system provides quick bursts of energy for short, intense activities like a sprint.

Evaporation of sweat is the main mechanism for heat loss during exercise.

Slow-twitch fibers are fatigue-resistant and suited for endurance activities.

Interval training improves cardiovascular fitness by alternating between high and low intensity.

A cool-down helps gradually reduce heart rate and aids in recovery.

Glucagon increases to mobilize glucose from energy stores during exercise.

Lactic acid does not cause muscle soreness; soreness is mainly due to microtrauma.

Regular exercise strengthens the heart muscle, making it more efficient.

Hemoglobin transports oxygen from the lungs to the tissues during exercise.

'Hitting the wall' occurs when glycogen stores are depleted, reducing energy supply.

Strength training increases muscle mass and strength.

Carbohydrates are the primary energy source during exercise.

Diet affects energy availability but not directly VO2 max, which is more influenced by training and physiological factors.

Hypertrophy involves an increase in muscle fiber size due to strength training.

The aerobic system provides energy for prolonged endurance exercise.

Exercise increases mitochondrial density, enhancing aerobic capacity.

A higher RER indicates a greater reliance on carbohydrates for energy.

Endurance training improves cardiovascular function but does not significantly increase muscle mass.

Capillaries supply oxygen and nutrients to muscle tissues during exercise.

Proper hydration helps maintain electrolyte balance, reducing cramp risk.

Cross-training prevents overuse injuries by varying the stress on the body.

Cold, dry air can trigger exercise-induced asthma by irritating airways.

Chronic fatigue is a key symptom of overtraining syndrome, indicating insufficient recovery.

Hyperthermia, or overheating, is a major risk in hot conditions.

HIIT increases metabolic rate, enhancing calorie burn post-exercise.

B vitamins are essential for energy metabolism, aiding in converting nutrients to energy.

Hemoglobin concentration increases to improve oxygen transport at high altitudes.

Cardiac output is the volume of blood the heart pumps per minute, crucial during exercise.

Regular physical activity reduces the risk of osteoporosis by strengthening bones.

Exercise increases free radical production, which is balanced by antioxidant defenses.

Endurance training increases left ventricular volume, enhancing cardiac output.

Sodium is lost in sweat, which can lead to imbalances if not replenished.

Resistance training increases tendon strength, supporting muscle and joint function.

A warm-up prepares the body for exercise, reducing the risk of injury.

Reduced blood flow does not contribute to increased muscle strength; other factors do.

Flexibility training improves range of motion and reduces injury risk.

Exercise decreases blood glucose levels by increasing muscle uptake of sugar.

Carbohydrates are the primary energy source during high-intensity exercise.

Increased sweating efficiency helps dissipate heat more effectively.

Aerobic training increases plasma volume, improving circulation and endurance.

Dehydration does not improve strength; it negatively affects performance and thermoregulation.

Excessive sweating is a common symptom of heat exhaustion.

Exercise increases resting metabolic rate by building muscle mass and improving energy expenditure.

Exercise causes an increase in tidal volume to meet the higher oxygen demands.

Regular physical activity increases muscle mass and can decrease fat mass.

Dehydration can reduce alertness and cognitive function during exercise.

Protein is essential for muscle repair and growth, especially after exercise.

The ventilatory response increases oxygen uptake quickly to meet the demands of exercise.