Temporal trends in the sit-ups performance of 9,939,289 children and adolescents between 1964 and 2017.
Tori KasterFaith L DooleyJohn S FitzgeraldTanis J WalchMadison AnnandaleKatia Elizabeth FerrarJustin J LangJordan J SmithGrant R TomkinsonPublished in: Journal of sports sciences (2020)
CRD42013003657.
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