The reason VO2 max declines - Deepstash

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The reason VO2 max declines

Blood and plasma volumes can decrease by as much as 12% in the first four weeks after a person stops training. Plasma and blood volume decrease due to the lack of stress put on our heart and muscles.

Plasma volume can reduce to about 5% within the first 48 hours of stopping training as less blood is pumped around the body with each heartbeat.

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MORE IDEAS FROM THE SAME ARTICLE

We become unfit much quicker than it took to get in shape. To understand how the body becomes unfit, we need to understand how we become fit.

Cardiorespiratory fitness - shown by a person's VO2 max will decrease around 10% in the first four weeks after a person stops exercising. The rate of decline continues but eventually evens out.

Some gains in muscle force can appear in two weeks, but gains in muscle size won't be seen until around eight to 12 weeks.

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