Here's something I didn't know (probably not really relevant to this discussion, but interesting nonetheless).
From 1968 until 1992 the Olympic skeet shooting event was open to men and women. Then in 1992 it was actually won by a woman.
So what happened at the next Olympics? It was made men-only.
When something like this is mentioned, I'm always curious about the details of what actually went into the decision. Unfortunately, there isn't much available from the usual convenience sources (i.e., Wikipedia).
But here's some thoughts that come to my mind:
The decision was apparently made by the international governing organization for competitive shooting: the ISSF. Whether this decision was made entirely internally, or influenced by the IOC, is not known.
The ISSF already had some segregated events, so it's not like they were committed to co-ed shooting competitions.
The fact that in 6 olympiads, a woman only won once, argues that clearly the co-ed format wasn't working. It's possible that they had already planned to eliminate the co-ed Olympic event, and it was just a quirk of history that a woman happened to win the last such event.
It might also have been a complete fluke. The woman who won only placed 8th at her next major international competition.
The ISSF is responsible for increasing international participation in their sport. They may have started with a co-ed skeet event simply because there weren't enough competitors to make a good Olympic field otherwise.
As competitive skeet shooting became more popular internationally, everyone understood that audiences wouldn't be interested in seeing women consistently lose to men, and so they knew they were going to have to cancel the co-ed event at some point anyway.
Maybe they had only the men's event in the next olympiad because they already had enough international competitors to make a full field. By the following olympiad, they had enough olympic-tier women to introduce a women's event.
The ISSF is responsible for increasing international participation in their sport. This probably means that sooner or later, they have to promote the sport in cultures with strong taboos against co-ed competition. Maybe in 1992 the were facing the choice of keeping the co-ed event, or getting several more countries to send competitors to the Olympics.
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An interesting and relevant note about the women's event introduced in the next olympiad: The men's event had five series of 25 targets, for a total of 125 shots. The women's even had three series of 25 targets, for a total of 75 shots.
In Olympic Skeet, the shooter starts each round with the shotgun at their hip, lifting it to their shoulder only after the trap has been released. That's a certain amount of lifting and lowering.
And that brings us back to the convergence of skill and strength. Target shooting is all about fine motor control, but with the added challenge of progressive muscle stress over time.
A woman can certainly be as good a shot as a man, given the same innate talent and the same training regimen. For their first shots. Do they still have skill parity at the 75th shot? The 100th? At some point, strength and stamina become important factors in the athlete's ability to compete at the highest levels, regardless of how skillful they are, or how good their fine motor control is when they're fully rested.
It's probably no accident that Olympic Skeet requires of women only 3/5ths of the stamina it requires of men. That one Chinese woman that one time notwithstanding.