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. Author manuscript; available in PMC: 2023 Jul 1.
Published in final edited form as: J Physiol. 2022 Jun 2;600(13):3069–3081. doi: 10.1113/JP283036

Figure 2. Exercise-induced changes in intramuscular [H+], [Pi] and [H2PO4−].

Figure 2.

Intramuscular hydrogen ion (H+), inorganic phosphate (Pi) and the acidic diprotonated form of Pi (H2PO4−) were measured using phosphorus magnetic resonance spectroscopy (31P-MRS) during 60 knee-extensor MVCs. Trial 1 and 2 were separated by 5 min of rest. Data are presented as mean ± SD. Significant time, trial, and time × trial interaction effects are indicated on the graphs. N = 10.