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Post-vax exercise bumps up antibodies: Study
New York, Feb 12 - Around 90 minutes of mild- to moderate-intensity exercise directly after the flu or the Covid-19 vaccine may provide an extra immune boost, suggests a new study.
The study showed that participants who cycled on a stationary bike or took a brisk walk for an hour-and-a-half after getting a jab produced more antibodies in the following four weeks compared to participants who sat or continued with their daily routine post-immunization.
The researchers, including lead author Marian Kohut from Iowa State University, found similar results when they ran an experiment with mice and treadmills.
"Our preliminary results are the first to demonstrate a specific amount of time can enhance the body's antibody response to the Pfizer-BioNTech Covid-19 vaccine and two vaccines for influenza," said Kohut.
The researchers said the study's findings could directly benefit people with a range of fitness levels.
Nearly half of the participants in the study, published in the journal Brain, Behavior and Immunity, had a BMI in the overweight or obese category.
During 90 minutes of exercise, they focused on maintaining a pace that kept their heart rate around 120-140 beats per minute rather than distance.
In the study, the researchers also tested whether participants could get the same bump in antibodies with just 45-minutes of exercising.
They found the shorter workout did not increase the participants' antibody levels.
As to why prolonged, mild- to moderate-intensity exercise could improve the body's immune response, Kohut said there may be multiple reasons.
Working out increases blood and lymph flow, which helps circulate immune cells. As these cells move around the body, they're more likely to detect something foreign, the researcher said.
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