Short & Long Term Effects Flashcards
Why does breathing rate increase during exercise?
To supply more oxygen to the muscles and remove excess carbon dioxide produced during activity.
What is tidal volume?
Tidal volume is the amount of air inhaled or exhaled with each breath.
How does tidal volume change during exercise?
Tidal volume increases to take in more oxygen and expel more carbon dioxide.
What happens if oxygen supply cannot meet the muscles’ demand?
The body relies more on the anaerobic energy system, leading to lactic acid buildup and muscle fatigue.
Why does heart rate increase during exercise?
To pump more oxygenated blood to the muscles and remove waste products like carbon dioxide.
What is cardiac output?
Cardiac output is the amount of blood the heart pumps in one minute.
How is cardiac output calculated?
Cardiac output = Heart rate × Stroke volume.
What is stroke volume, and how does it change during exercise?
Stroke volume is the amount of blood ejected by the heart in one beat, and it increases during exercise to meet the muscles’ demand for oxygen.
What happens if the heart cannot pump enough blood to the muscles?
The muscles may not receive enough oxygen, leading to fatigue and decreased performance.
Why does blood pressure increase during exercise?
Because the heart pumps more forcefully to circulate blood faster around the body.
What is the difference between systolic and diastolic blood pressure?
Systolic pressure is the force when the heart contracts, and diastolic pressure is the force when the heart relaxes.
Which type of blood pressure increases more during exercise?
Systolic pressure increases significantly, while diastolic pressure changes only slightly.
Why does body temperature increase during exercise?
Because heat is a by-product of energy production in the muscles.
How does the body regulate temperature during exercise?
By sweating, which cools the skin as it evaporates, and by increasing blood flow to the skin.
What can happen if the body overheats during exercise?
Overheating can lead to heat exhaustion or heatstroke.
Why do hydration levels decrease during exercise?
Due to the loss of fluids through sweating and breathing.
What are the signs of dehydration during exercise?
Thirst, dry mouth, light-headedness, and decreased performance.
Why is hydration important during exercise?
To maintain blood volume, regulate temperature, and prevent fatigue.
What causes muscle fatigue during exercise?
Insufficient oxygen supply to the muscles and the buildup of lactic acid.
How can muscle fatigue affect performance?
It reduces the muscles’ ability to contract efficiently, leading to decreased strength and endurance.
What is delayed onset muscle soreness (DOMS)?
Muscle pain and stiffness that occurs 24–48 hours after intense exercise due to microscopic damage to muscle fibers.
What causes DOMS?
High-intensity exercise, particularly eccentric movements that lengthen the muscles under tension.
How can DOMS be reduced?
By performing a proper warm-up, cooling down, and gradually increasing exercise intensity.
What causes light-headedness during or after exercise?
It can result from dehydration, low blood sugar, or a sudden drop in blood pressure