There are many reasons older people do not play sports, including:
1. Mindset: They think they are too old to play the sport therefore they do not.
2. Physical limitations: People do deteriorate a bit physically as we age, more so if a healthy lifestyle has not been maintained.
3. Societal expectations - Society values youth and prefers to see youthful figures playing sports.
4. Society's love of "beauty" and "handsomeness" precludes many older adults. Society loves the "bathing beauty" in a 2-piece bathing suit over the 50-year old woman in a one-piece suit, even if the older woman is a better swimmer. Women on the other hand prefer male players in tight uniforms (example: Baseball), versus an older, gray-haired man.
They participate to prevent any cheating in the game of sport
They love sport. Mate.
ethnic minorities can participate in any sports that choose to participate in
The sport that one might participate in a 'throw in' is ultimate. Ultimate is known as intense sport that uses flying discs, and is played by a team of people.
Boxing
Swimming
Bowling.
Snooker
Laila Ali participated in the sport of professional boxing.
Max Baer competed in the sport of professional boxing.
If you have to travel half way across the country then you will be less likely to participate/continue to participate in that particular sporting activity. If however, that activity was on your doorstep there is a greater possibility you will participate in that sport.
Coaches participate because it encourages the participants to do more and not think it unfair.