As a general rule for physical exertion, continuous, rhythmic, and controlled breathing is essential. This includes short "sprint" type bursts of activity as well as long "endurance" periods of activity.
When it comes to ensuring or maximizing your oxygen intake, it seems more natural to take one long breath, although many athletes and depictions of athletes (entertainment) often end up using two shorter breaths to constitute a single intake of air.
Which method provides the most efficient/maximum oxygen intake during physical exertion? Is there a better, alternative method?
innnnnnnnnnnn (one long, deep breath in)
outttttttttttttt (one long, pushing breath out)
innnn innnn (two short, staccato breaths in)
outtttt (one short, quick breath out... although could be two, but I find typically one is enough)
Note: the two methods seem to be at odds. One long breath feels like more intake, but takes longer and this can be difficult to maintain in some circumstances as exhaustion sets in. Two short breaths feels quicker, tends to encourage a rhythm, and seems to get the job done, but does it really give you as much intake?