Episode 1504 - Chill out: why cold plunges may not be as effective as we think

Alan Fredendall // #FitnessAthleteFriday // www.ptonice.com

In today's episode of the PT on ICE Daily Show, Fitness Athlete division leader Alan Fredendall defines cold plunging, discusses the research behind cold plunging, and how to practically approach practicing cold plunging. Take a listen to learn how to discuss cold plunging with your patients or athletes.

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EPISODE TRANSCRIPTION

00:00 INTRO What's up everybody? Before we get rolling, I'd love to share a bit about Jane, the practice management software that we love and use here at ICE who are also our show sponsor. Jane knows that collecting new patient info, their consent, and signatures can be a time consuming process, but with their automated forms, it does not have to be. With Jane, you can assign intake forms to specific treatments or practitioners, and Jane takes care of sending the correct form out to your patients. Save even more time by requesting a credit card on file through your intake forms with the help of Jane Payments, their integrated PCI compliant payment solution. Conveniently, Jane will actually prompt your patients to fill out their intake form 24 hours before their appointment if they have not done so already. If you're looking to streamline your intake form collection, head over to jane.app slash physical therapy, book a one-on-one demo with a member of the Jane team. They'll be able to show you the features I just mentioned and answer any other questions you may have. Don't forget, if you do sign up, use the code ICEPT1MO for a one month grace period applied to your new account. Thanks everybody, enjoy the show.

01:25 ALAN FREDENDALL Alright, good morning PT on ICE Daily Show, happy Friday morning. Hope your morning is off to a great start. My name is Alan, I'm happy to be your host today. Currently, I have the pleasure of serving as a faculty member here in our fitness athlete division and the chief operating officer here at ICE. Fridays, our fitness athlete Fridays, we talk everything related to the recreational athlete, whether that's somebody in the gym doing CrossFit, powerlifting, Olympic weightlifting, bodybuilding, out on the track, the road, running, biking, swimming, whatever, that person who is getting after it. Four to six days per week is the focus here on fitness athlete Friday. We're biased, but we would argue it's the best darn day of the week. Courses coming your way from the fitness athlete division. Taking the summer off, we have some live courses coming up in September. You can catch Mitch Babcock out in Bismarck, North Dakota. That will be the weekend of September 9th and 10th, so the first September of the fall. And then you can catch Zach Long, aka the Barbell Physio out in Newark, California. That's the Bay Area. That's going to be the weekend of September 30th and October 1st. Online courses from us, our Essential Foundations, our eight week entry level online course starts back up September 11th. We're currently halfway through the current cohort. And then our Advanced Concepts course, our level two course that requires Essential Foundations, that drills down deep into things like Olympic weightlifting, gymnastics, programming, both for CrossFit and strength, injured athletes, all that sort of fun stuff. That starts September 17th. So you can find out more about our courses at ptenice.com. So today's topic, let's talk about cold plunging. You can't trip over a rock in public these days without finding somebody trying to get neck deep in some cold water somehow. Everybody's doing it. They're posting about it. There are probably a million ads you've seen on social media for this tub. This thing that looks like a bourbon barrel. This thing that looks like a fancy bathtub. All these different ways to essentially cool down your body. So I want to attack this topic from three different angles. I want to talk about defining a cold plunge and how probably most of the people cold plunging currently or certainly what we see happen on the Internet is not true cold plunging. I want to talk about the research supporting, not supporting the use of cold plunging. And I want to talk about the practical application of what we can recommend to our patients and athletes when they come into the clinic or the gym and ask us what we know about cold plunging. What's the best way to cold plunging and all that sort of thing. So let's start from the beginning. What is a cold plunge? We need to start at the top and understand that humans have a really large tolerance for heat at rest and a very poor tolerance for cold at rest. You can imagine it's much better to sit outside on a 90 degree day than a 30 degree day. So our perception of temperature is a little bit different. It's skewed based on if we're active or if we're resting. It flips entirely when we are active. You can imagine how terrible it would be to run on a 100 degree day versus running on maybe a 50 degree day. We would all probably much choose the 50 degree day because our bodies lose heat tolerance as our activity level increases, which is all that to say of we have a really poor tolerance for cold at rest, which means when we define the parameters of what's used for cold plunging in research, we'll quickly recognize that most of us, most of the people we see aren't doing it cold enough. They aren't doing it long enough and they aren't exposing as much of their body as they need to to the cold plunge. So a cold plunge is defined by the research is going to be exposure up to your neck or possibly your entire body for 10 minutes at 40 to 50 degrees Fahrenheit. That's a large portion of our body. That's a really long duration of cold exposure for a human being at rest. And that is relatively cold. Again, we have a really poor tolerance to cold at rest. Now, imagine we've we've all taken a bath. Imagine you you take a hot bath or sit in a bathtub and then you get that feeling of, oh, I'm getting really cold. Like this water has cooled down significantly. Again, our perception of temperature is really skewed. When we decide it's time to get out of the bath because the bath water has become too cold, we've probably started in bath water of maybe one hundred and five to one hundred and ten degrees. And it has only cooled down to maybe 90 to 95 to the point where we say this is cold, quote unquote, cold. I'm going to get out of the bathtub now. But really, 90 to 95 degree water is remarkably warm compared to what we define as cold plunge in the literature. So most folks are probably simply not getting their water cold enough to even define cold plunging. Again, the duration of support in the research is cold plunging of 10 minutes. So if you are doing it for 30 seconds or one minute, just know you are not anywhere close to reaping the effects or the positive or negative that we've seen in the research. If you're only dipping your toe in for a few minutes or jumping in up to your knees or your waist and hopping back out again in the research, exposure would define itself as being exposed up to the neck, at least. So many folks just putting their legs in a cold plunge, just going up to the level of maybe the knee, going up to maybe the level of the waist or maybe belly button mid chest or something. Again, if you're doing that to slowly gain tolerance, that's OK. But if that's what you're calling normal cold plunging, just know you're probably not reaping as much of the effect. Again, positive or negative that we'll talk about here in a second as you could be. So cold plunging 40 to 50 degrees up to your neck, duration of about 10 minutes. So all that to say, most people are probably not actually cold plunging when we do it ourselves or we watch others do it. Excuse me. Simply not cold enough, not enough for their body to get in effect and not enough for a long duration. I do want to give a special shout out to ICE faculty members Dustin Jones and Jeff Musgrave. They are unashamedly posting their cold plunges every day on social media and they really get after it. You can see that they have a bunch of ICE in their backyard cold plunges and they're sometimes exposing their whole body to the cold plunges. So they are doing it right. That's the way to do it. So let's switch gears and talk about what does the research say. The research in this field is becoming overwhelming of just looking at the trend and volume of research. Eight hundred and seventy articles published on what the research would call cold water immersion since 2008. So an exponential growth in the people studying, the amount of people studying and the volume of research studying this particular area of what we might call athletic recovery. I want to talk about just two journals today, two journal articles. There are literally like we talked about hundreds and hundreds and hundreds and hundreds. But I really want to talk about two. What I like about these two articles I want to share is that they are 30 years apart an