We all know it’s important to drink water during exercise. It’s especially important to drink water when exercising or working outside in the heat. Does the temperature of your water matter? A recent study, published in Wilderness and Environmental Medicine, says ‘yes’!
Study participants exercised for three hours in an environment that was 88-degrees (50% relative humidity). Participants were divided into three groups. Every 10-minutes, each group was offered either:
- Room temperature water (rate of 2g per kg of body mass)
- Ice Slurry of 2/3 shaved ice and 1/3 water (rate of 2g per kg of body mass)
- Ice Slurry of 2/3 shaved ice and 1/3 water (rate of 1g per kg of body mass)
Researchers found drinking the reduced amount of ice slurry (1 g per kg of body mass) was just as effective in thermoregulation as drinking the full amount of room temperature water (2g per kg body mass).
Researchers also found that drinking the full amount of ice slurry (2g per kg of body mass) was even more effective in thermoregulation! The report explains, “Rectal and skin temperatures, heart rate, and overall all physiological strain were lower at the end of the exercise period, making the full amount of ice slurry the most effective liquid for managing thermoregulation and physiological responses.”
What does this mean for you? Drink your H20 ‘on the rocks’ when working out or working hard in hot temperatures for optimal health in the heat!