Exercise does not influence development of phenotype in PLN p.(Arg14del) cardiomyopathy.

"Conflict of interest C.A. James receives salary support form an investigator-initiated research grant from Boston Scientific Corp. and serves as a consultant for Pfizer Inc. and StrideBio, Inc. F.H. M. van Lint, F. Hassanzada,T.E. Verstraelen, W. Wang, L.P. Bosman, P.A. van der Zwaag, T. Oomen, H. Calkins, B. Murray, C. Tichnell, T.M.A. Beuren, F.W. Asselbergs, A. Houweling, M.P. van den Berg, A.A.M. Wilde and J. P. van Tintelen declare that they have no competing interests."

"Funding This work was supported by the Netherlands Cardiovascular Research Initiative, an initiative supported by the Dutch Heart Foundation (CardioVasculair Onderzoek Nederland (CVON) projects: PREDICT2 2018-30, eDETECT 2015-12, DOSIS 2014-40, DOUBLE-DOSE 2020B005). Additional financial support was received from CURE-PLaN, a network funded by the Leducq Foundation, and the Dutch PLN Patient Foundation. Support was also provided by the Netherlands Organisation for Scientific Research (NWO)—travel grant 040.11.586 to C. A. James."