My local pool has just raised the water temp to 30 ' C ( 86 ' F ) ! At this temp I am exhausted after 4 lengths. A full workout of 60 to 90 mins is impossible without suffering heat exhaustion. They have already had 1 swimmer collapse on poolside after swimming hard for 40 mins.
This has happened because a ' disabled swim group ' who use the pool for 45 mins once a week keep complaining about how cold the pool is. The pool management can't figure out the pool temp software so the temp is set that high for 24/7. It used to be 27' C ( 80.6' F ) and was then raised to 28'C (82.4 ' F ) 1 year ago.
I can't set workouts for my club that cause heat distress if carried out so it is a nightmare. My training is on hold until i can change this and I will have to move my masters club to another pool if not changed. Maybe ' Shaky's ' pool has space for us ?
Emmet Hines in his book says that 82 ' F ( 27.7' C ) is ideal for training, and that anything over 84' F ( 28.4 ' C ) is too hot.
Does anyone else suffer through hot water temperatures ? Can anyone recommend online research that I can use to prove the dangers of excercising in hot water ?
For those across the pond (and anyone else who has not seen the July/Aug SWIM issue:
Core temp, the temp of the deeper tissues of the body, can survive 10C degree drop but only a 5Cdegree elevation. Fatigue sets in at 38-40C (100.4-104F), and optimal for performance is slightly raised core temp.
Water absorbs 1000x more heat than air, hence the difference between 80 degree water and deck temps. Swimming a fast crawl, say the authors, can increase core temp .5-.9 degrees F every 5-7 minutes, which offsets the cooling action of the water.
As to evaporation effects in water: evaporation of perspiration IS what cools us in air, but water is 100% humid so we do not benefit from evaporation but still lose fluids thru skin and airways. In warm water, as core temp rises 1F/10 minutes (approx), swimmer will fell overheated, fatigued, then HR increases. Heart has to work harder ....swimmer has to slow down because in the end enough oxygen does not get to the muscles. They say that the brain may even enhance the fatigue feelings as a protective mechanism.
That is paraphrased from the article by Jessica Seaton and James Acker.
They also include this from the "Swimming Pool Operators and Owners Resource Pages":
Max temp for swimming, diving, fitness swimming and training:80.6F (27C)
Max temp for rec, adult teaching, conventional main pools:82.4F(28C)
Max temp for children's swim lessons and leisure pools:84.2F(29C)
Max temp for babies, young children, disabled and handicapped people:86.0F (30C)
Hopefully this can help!
For those across the pond (and anyone else who has not seen the July/Aug SWIM issue:
Core temp, the temp of the deeper tissues of the body, can survive 10C degree drop but only a 5Cdegree elevation. Fatigue sets in at 38-40C (100.4-104F), and optimal for performance is slightly raised core temp.
Water absorbs 1000x more heat than air, hence the difference between 80 degree water and deck temps. Swimming a fast crawl, say the authors, can increase core temp .5-.9 degrees F every 5-7 minutes, which offsets the cooling action of the water.
As to evaporation effects in water: evaporation of perspiration IS what cools us in air, but water is 100% humid so we do not benefit from evaporation but still lose fluids thru skin and airways. In warm water, as core temp rises 1F/10 minutes (approx), swimmer will fell overheated, fatigued, then HR increases. Heart has to work harder ....swimmer has to slow down because in the end enough oxygen does not get to the muscles. They say that the brain may even enhance the fatigue feelings as a protective mechanism.
That is paraphrased from the article by Jessica Seaton and James Acker.
They also include this from the "Swimming Pool Operators and Owners Resource Pages":
Max temp for swimming, diving, fitness swimming and training:80.6F (27C)
Max temp for rec, adult teaching, conventional main pools:82.4F(28C)
Max temp for children's swim lessons and leisure pools:84.2F(29C)
Max temp for babies, young children, disabled and handicapped people:86.0F (30C)
Hopefully this can help!
