Figure 2.

Covariates’ association with self-reported changes in fitness. Multivariable Poisson regression models fit separately for each outcome included time since first SARS-CoV-2-positive test or time since enrollment (for SARS-CoV-2-negative participants) and random effect for the participant in addition to the listed covariates. The reference category for BMI is normal/underweight; the reference category for military service branch is Air Force; the reference category for age is 18–29 years; the reference category for SARS-CoV-2 status is uninfected. Abbreviations: BMI, body mass index; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2.