Phosphocreatine recovery rate constant

Older age is associated with phosphocreatine recovery rate constant in humans (Older: 0.020 ± 0.003 s-1; young: 0.023 ± 0.005 s-1).

“Young muscle had a greater kPCr (0.023 ± 0.005 s-1, mean ± SD) than older muscle (0.020 ± 0.003 s-1, P = .033).”

Humansskeletal musclefollowing a 24-s dynamic contraction protocol

Does lower oxidative capacity influence the relative contributions of ATP-producing pathways during muscular work in aging?

The journals of gerontology. Series A, Biological sciences and medical sciences·2 Jul 2025