translate English to French: The changes in resting and action potentials, twitches, and maximum potassium-induced contractures (K contractures) were remarkably small when the pH was varied between 5.0 and 10.0.
Les changements des potentiels de repos et d'action, des contractions soudaines et des contractions maximales sous l'effet du potassium (contractions K) sont remarquablement petits quand le pH varie entre 5.0 et 10.0.