Question

I have a question. We did an experiment to test whether 20 minutes of jogging or 20 seconds of fast running had a greater impact on a person's breathing and heart rate. After comparing the average rate of change, it was found that fast running in 20 seconds had a greater impact. Can you explain this in terms of biology?

Answer 1

Jogging and running both make impact on the body. Jogging done at slow rate for long time and running or sprinting done at high rate for small period of time. Jogging is less intense in nature but the running or sprinting intensive. Sprinting or running activates the fast twitch muscle fibres on the other hand Jogging activates slow Twitch muscle fibres.

Thus more intensive exercise will create higher heart rate pushing it into anaerobic conditions while Jogging will keep a constant heart rate throughout the exercise

Generally anaerobic workout are ideal for activation and muscle building while the aerobic exercise improve cardiovascular health. Sprinting or running and Jogging both activate same muscle groups but sprinting or running activates more muscle groups than Jogging. This lead to increased muscle growth. In addition to this sprinting or running also boosts the level of testosterone and growth hormone. On the other hand Jogging improve endurance.

Also in sprinting or running since the contraction of muscle fibres are intese and repetitive it starts the regeneration process called hypertrophy. Thus sprinting or running create greater impact than that of the Jogging.