For dryland sports or work efforts, exhale on muscular exertion is the correct method. But for racing starts in swimming, I prefer to inhale during flight to get a big gulp of air before I hit the water.
Which is better, inhale or exahale when diving off the starting block?
Did a little mental re-creation and this is my sequence:
-- normal/slightly deep breaths on the block while waiting for the starter
-- hold breath after "take your marks"
-- exhale during the explosion off the start
-- inhale in the air prior to entering the water (this is involuntary)
You should not need much air to get to 15m (or whatever) off a start, it only takes a few seconds. For me, gasping for air comes much later in the race...
Did a little mental re-creation and this is my sequence:
-- normal/slightly deep breaths on the block while waiting for the starter
-- hold breath after "take your marks"
-- exhale during the explosion off the start
-- inhale in the air prior to entering the water (this is involuntary)
You should not need much air to get to 15m (or whatever) off a start, it only takes a few seconds. For me, gasping for air comes much later in the race...