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Re: Racing with a snorkel [ericmulk]
  
Hello

can't find the study again, but this one give similar results, see figure 1 :

https://www.researchgate.net/...AFTER_FRANCAUX_MODEL

Bikers : measured on ergometer cycle (not in this study, figures from another study referenced)
Swimmers : similar results from ergometer cycle test and real swimming tests (both done, from this study and another). For real swimming, only blood test done, no oxygen masks.

Swimmers tested are Olympic team level, apparently.

4mmol/L (approx Lactate threshold) is reached :
- between 3 and 3.5 O2 L/mn for swimmers
- 4.5 L/mn for bikers.

Very significant difference !

Several possible explanations :

1) mass muscle involved in swimming is lower (if not overusing legs) leading to less pressure on cardio-vascular system

2) swimmers tested have a more "sprinter profile".
I found another study comparing runners : marathoners vs sprinters, and marathoners typical lactate curves are similar to bikers (no surprise here) while sprinter typical lactate curve move up much earlier (no surprise again, less aerobic capacity).
However, 800m or 1500m swimming is not "sprinting", more like pursuit or a short TT. So this cannot explain the difference.

3) up to you...
Last edited by: Pyrenean Wolf: Jan 14, 19 4:21

Edit Log:

  • Post edited by Pyrenean Wolf (Dawson Saddle) on Jan 14, 19 4:21