Laboratornaia Rabota 8 - Klass Izmerenie Pulsa

Perform 20 fast squats. Immediately after finishing, measure the pulse.

Wait for 2–3 minutes and measure the pulse again to see how quickly it returns to normal. Pulse (beats/min) Sitting (Rest) (e.g., 70) (e.g., 85) After 20 squats (e.g., 120) After 2 min recovery (e.g., 75) 4. Analysis and Conclusion laboratornaia rabota 8 klass izmerenie pulsa

Pulse rate increases significantly after physical activity. This happens because muscles require more oxygen, and the heart must beat faster to pump more oxygenated blood throughout the body. Perform 20 fast squats

Влияние нагрузок на частоту сердечных сокращений Pulse (beats/min) Sitting (Rest) (e

Stand up and immediately measure the pulse again to see the effect of gravity and posture change.

This laboratory work for the 8th grade biology curriculum focuses on measuring heart rate (pulse) to understand how the circulatory system adapts to different physical conditions.

While you can count for a full minute for maximum accuracy, a common classroom method is to count for 15 seconds and multiply by 4, or count for 10 seconds and multiply by 6.