This is the best summary I could come up with:

When symptoms such as fatigue, headache and shortness of breath last for at least two months, with no other explanation, they meet part of the definition of what the World Health Organization now calls post COVID-19 condition.

Previous research suggests that the wide range of symptoms and their severity, as well as different time frames, make it harder to study long COVID in a systematic way to guide treatment.

To that end, researchers pooled findings from 14 randomized clinical trials — the gold standard to evaluate medical studies and reduce bias.

“We found evidence suggesting that rehabilitation programs can be beneficial in improving walking capacity and quality of life,” said Pavlos Bobos, the study’s lead author and an assistant professor in the school of physical therapy at Western University in London, Ont.

Dr. Mark Bayley, medical director at the Toronto Rehabilitation Institute, heads the University Health Network’s program to help patients with long COVID-19 recover from fatigue.

Bobos, first author and Western PhD student Dimitra Pouliopoulou and their team focused on studies using one measure, called a six-minute walk test at one point in time.

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