ericmulk wrote:
mauricemaher wrote:
Chemist wrote:
devashish_paul wrote:
This is likely because you are burning the most calories on average per minute swimming than you do in bike or run
You are gonna have to provide at least a shred of real evidence for anyone to believe you on this
There are very few studies which measure o2 and swimming but here’s one on cycling, arm cranking and swimming. In this group swimming is about 20% lower.
For the sake of argument 1L per minute o2 is about 5cal. So someone going pretty well at threshold of 4L is about 4x5x 60 minutes =1200cal.
We’ve done about 500 tests mostly multiple times on the same athlete and only rarely see run values lower than cycling (think cat 1/2 cyclist turned triathlete who can’t run yet)
https://www.frontiersin.org/...phys.2017.00639/full
Maurice
From the first paragraph of this study:
Oxygen uptake (VO2) kinetics has been reported to be influenced by the activity mode. However, only few studies have compared
VO2 kinetics between activities in the same subjects in which they were equally trained. Therefore, this study compared the V⋅V·O2 kinetics response to swimming, arm cranking, and cycling within the same group of subjects within the heavy exercise intensity domain. Ten trained male triathletes (age 23.2 ± 4.5 years; height 180.8 ± 8.3 cm; weight 72.3 ± 6.6 kg) completed an incremental test to exhaustion and a 6-min heavy constant-load test in the three exercise modes in random order.
Right at the start they have made a fundamentally flawed assumption, i.e. that triathletes ae equally trained in the swim and the bike. I think we all know this is not true, e.g. that tri-guys are much more highly trained on the bike vs minimally trained on the swim. This kind of invalidates the whole study IMO. :)
Feel free to scroll down and read a bit more than the opening sentence(s). It expresses o2 consumption as a function of speed.
As I said not a whole of studies but more than this one out there.
ETA: the measured o2 at 2:55 or so per 200 was about 3.7L, for cycling at 350 watts it was about 4.8L.
Maurice
Last edited by:
mauricemaher: Apr 29, 21 21:19