Hey crossfitters:
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Posts: 3,306 Member
Crossfit-based high intensity power training improves maximal aerobic fitness and body composition.
Smith MM, Sommer AJ, Starkoff BE, Devor ST.
J Strength Cond Res. 2013 Feb 22.
ABSTRACT: The purpose of this study was to examine the effects of a crossfit-based high intensity power training (HIPT) program on aerobic fitness and body composition. Healthy subjects of both genders (23 males, 20 females) spanning all levels of aerobic fitness and body composition completed 10 weeks of HIPT consisting of lifts such as the squat, deadlift, clean, snatch, and overhead press performed as quickly as possible. Additionally, this crossfit-based HIPT program included skill work for the improvement of traditional Olympic lifts and selected gymnastic exercises. Body fat percentage was estimated using whole body plethysmography and maximal aerobic capacity (VO2max) was measured by analyzing expired gasses during a Bruce protocol maximal graded treadmill test. These variables were measured again following 10 weeks of training and compared for significant changes using a paired t-test. Results showed significant (P<0.05) improvements of VO2max in males (43.10±1.40 to 48.96±1.42 ml/kg/min) and females (35.98±1.60 to 40.22±1.62 ml/kg/min) as well as decreased body fat percentage in males (22.2±1.3 to 18.0±1.3) and females (26.6±2.0 to 23.2±2.0). These improvements were significant across all levels of initial fitness. Significant correlations between absolute oxygen consumption and oxygen consumption relative to body weight was found in both men (r=0.83, P<0.001) and women (r=0.94, P<0.001), indicating HIPT improved VO2max scaled to body weight independent of changes to body composition. Our data shows that HIPT significantly improves VO2max and body composition in subjects of both genders across all levels of fitness.
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Replies
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i can dig it0
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I would make some brilliant and eloquent comment either for or against what the OP posted...if only I knew what any of it meant.0
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I would make some brilliant and eloquent comment either for or against what the OP posted...if only I knew what any of it meant.
who knows?0 -
I would make some brilliant and eloquent comment either for or against what the OP posted...if only I knew what any of it meant.
who knows?
Well yeah!! What he said...and stuff!0 -
I mostly clicked through to this post for the inevitable gifs...
...but since there aren't any yet, I guess I'll read the abstract instead.
Hmmm, this sounds like a good thing...
...for anyone who can do at least 10 weeks of Crossfit-type training...
...without getting injured.
3...2...1...Go!0 -
Are you trying to jinx me because I'm only 9 weeks in?0
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Crossfit-based high intensity power training improves maximal aerobic fitness and body composition.
Smith MM, Sommer AJ, Starkoff BE, Devor ST.
J Strength Cond Res. 2013 Feb 22.
ABSTRACT: The purpose of this study was to examine the effects of a crossfit-based high intensity power training (HIPT) program on aerobic fitness and body composition. Healthy subjects of both genders (23 males, 20 females) spanning all levels of aerobic fitness and body composition completed 10 weeks of HIPT consisting of lifts such as the squat, deadlift, clean, snatch, and overhead press performed as quickly as possible. Additionally, this crossfit-based HIPT program included skill work for the improvement of traditional Olympic lifts and selected gymnastic exercises. Body fat percentage was estimated using calipers and maximal aerobic capacity (VO2max) was measured by analyzing expired gasses during a Bruce protocol maximal graded treadmill test. These variables sound great but when we tried to do the various tests on the crossfitters we couldn't get them to stop kipping!! One of them knocked over all the crap on my desk and another chick kipped a sandwich off of her plate and spilled mustard on my damn shirt.
fixed.0 -
So, I'm a crossfitter. So I would love to say this is a great study... but they pretty much had no controls.
It's really a pretty poor example of science, but thanks for showing me! It's good to see crossfit being researched!0 -
I mostly clicked through to this post for the inevitable gifs...
...but since there aren't any yet, I guess I'll read the abstract instead.
Hmmm, this sounds like a good thing...
...for anyone who can do at least 10 weeks of Crossfit-type training...
...without getting injured.
3...2...1...Go!
9 of the 54 participants dropped out citing overuse or other type of injury.0 -
Crossfit-based high intensity power training improves maximal aerobic fitness and body composition.
Smith MM, Sommer AJ, Starkoff BE, Devor ST.
J Strength Cond Res. 2013 Feb 22.
ABSTRACT: The purpose of this study was to examine the effects of a crossfit-based high intensity power training (HIPT) program on aerobic fitness and body composition. Healthy subjects of both genders (23 males, 20 females) spanning all levels of aerobic fitness and body composition completed 10 weeks of HIPT consisting of lifts such as the squat, deadlift, clean, snatch, and overhead press performed as quickly as possible. Additionally, this crossfit-based HIPT program included skill work for the improvement of traditional Olympic lifts and selected gymnastic exercises. Body fat percentage was estimated using calipers and maximal aerobic capacity (VO2max) was measured by analyzing expired gasses during a Bruce protocol maximal graded treadmill test. These variables sound great but when we tried to do the various tests on the crossfitters we couldn't get them to stop kipping!! One of them knocked over all the crap on my desk and another chick kipped a sandwich off of her plate and spilled mustard on my damn shirt.
fixed.
Stupid people who crossfit don't make gainz, same as the dumbass at the gym that uses the same weight on the same stuff every week isn't making gainz.
Smart people who crossfit and understand its limitations can make great gains. I couldn't hang and bend my arms in November, and I can do a set of 5 strict pull ups now. I will probably kip later, but not until I have built up real shoulder strength, because I'd rather not injure my shoulders. Yeah, a lot of people do stupid stuff in crossfit, but I think the principles of the "sport" itself aren't bad.0 -
I would make some brilliant and eloquent comment either for or against what the OP posted...if only I knew what any of it meant.
Don't worry about it. He'll post another thread in the next 45 minutes and I'm positive that you will be able to wax eloquently on that one0 -
I mostly clicked through to this post for the inevitable gifs...
...but since there aren't any yet, I guess I'll read the abstract instead.
Hmmm, this sounds like a good thing...
...for anyone who can do at least 10 weeks of Crossfit-type training...
...without getting injured.
3...2...1...Go!
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was measured by analyzing expired gasses
Is it because they eat paleo?0 -
I mostly clicked through to this post for the inevitable gifs...
...but since there aren't any yet, I guess I'll read the abstract instead.
Hmmm, this sounds like a good thing...
...for anyone who can do at least 10 weeks of Crossfit-type training...
...without getting injured.
3...2...1...Go!
Indeed. I would never have doubted the results would be what they were, but I also don't doubt the real possibility of injury.0 -
I mostly clicked through to this post for the inevitable gifs...
...but since there aren't any yet, I guess I'll read the abstract instead.
Hmmm, this sounds like a good thing...
...for anyone who can do at least 10 weeks of Crossfit-type training...
...without getting injured.
3...2...1...Go!
The study had a 16% drop out rate due to injury in the 10 week period...
Good lord.0 -
The study had a 16% drop out rate due to injury in the 10 week period...
Good lord.
oh. well there you have it.0
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