Metcalfe, Richard S., Swinton, Paul A., Mackintosh, Kelly A., Berg, Ronan M.G., Shelley, James, Saynor, Zoe L., Hudson, Joanne, Duckers, Jamie, Lewis, Keir, Davies, Gwyneth A., McNarry, Melitta A., "Heterogenous treatment effects following inspiratory muscle training during recovery from post-acute COVID-19 syndrome.", Medicine and science in sports and exercise, 2023