How does Nitrox generally affect ascent rates in diving?

The correct answer emphasizes that ascent rates for Nitrox dives should generally remain consistent with those used in air dives. This is because, regardless of the gas mixture being used, the physiological principles guiding safe ascent practices remain valid.

When diving with Nitrox, the main consideration typically revolves around managing the increased percentages of oxygen in the breathing gas and its impact on oxygen toxicity, rather than changes to ascent rate protocols. While Nitrox can extend bottom times and reduce the risk of nitrogen narcosis at given depths, the guidelines for controlled ascents, including the recommendations for safety stops, apply similarly to both air and Nitrox diving.

By maintaining ascent rates comparable to those used for air, divers ensure they are following established safety procedures, reducing the risk of decompression sickness. Thus, adhering to familiar ascent rate protocols while using Nitrox supports safe diving practices under the increased oxygen environment.