FIGURE 1.

Representative plot of NIRS protocol. Red line represents NIRS signal of the Hb difference during protocol as percentage of maximal oxygenation. Repeated measurement m$\dot{\mathrm{V}}$O₂ (red dots) are fitted to a monoexponential curve fit (grey line) from which a recovery constant is derived (a). Average curve fits for the low‐fitness and high‐fitness group for m$\dot{\mathrm{V}}$O₂ recovery presented as percentage of basal m$\dot{\mathrm{V}}$O₂ after 30 s of plantar flexion exercise in gastrocnemius (b) and after a handgrip exercise in wrist flexors (d). Recovery constants derived from monoexponential curve fits for gastrocnemius (c) and wrist flexors (e). For gastrocnemius muscle n = 12 versus n = 15. Values are represented as mean ± SD. **p < 0.01