Dave Scott on open-water swimming technique

Dave Scott on open-water swimming technique

After his victory at MIMS, Paul Newsome and his Swim Smooth business partner Adam Young embarked on a cross-continental road trip to experience America via swimming.

Along the way, they stopped in Boulder, Colorado and met up with 6-time Ironman world champion Dave Scott. Paul did an interesting video interview with Dave on the topic of open-water swimming technique. It’s worth your time to watch all 7 minutes, 46 seconds of this video. Here’s the money quote from Dave:

“I’m not concerned about distance per stroke. I like an effective front-end of the stroke, on the catch.”

Swim efficiency and energy consumption

Swim efficiency and energy consumption

In the last post I bemoaned the lack of credible science about marathon swimming. One is reminded of the William Goldman quote about the movie industry: Nobody knows anything.

Here’s a good example. A few days ago a Facebook friend linked to an intriguing-looking article. Published on a science-y looking website (“Your one-stop resource for longevity, health, exercise, nutrition, and scientific articles all to help you live a longer, fuller life”), the article is authored by marathon swimmer Don Macdonald.

One section seemed of particular interest: “Nutritional Demands of Open Water Endurance Swimming.” An excerpt:

Nutritional endurance demands biochemical changes of your body. The basic calculation for the amount of calories burned while swimming is 2.93 calories per mile, per pound. I weigh 207 pounds, and therefore burn 14,556 calories in a 24-mile swim, (2.93 calories x 24 miles x 207 pounds = 14,556 calories). You must also add 10-15 percent of your burnt calorie total for the energy it takes your body to keep itself warm. In this case, adding another 1,500 calories.

2.93 calories per mile, per pound.…

V = SL x SR (request for comments)

V = SL x SR (request for comments)

Interesting discussion going on in the comments section of my Tampa Bay race report, regarding a comment I made about Total Immersion. If any readers feel like chiming in, I’d be happy to hear your ideas.…

Don’t fight the water

Don’t fight the water

People sometimes ask me what I think of Total Immersion. A full discussion is beyond the scope of this post, but suffice to say: While I may quarrel with a few of the details, I think it’s general emphasis on “harmony with the water” is quite valid – and its validity increases with swim distance.

T.I. coaches teach their students to not “fight” the water. Beginning swimmers often fight the water (almost by definition), but advanced swimmers aren’t immune. I often catch myself doing this when I’m fatigued and trying to hold a pace slightly beyond my comfort zone. I’ve paid much more attention to not fighting the water since I started doing marathon swims. You might be able to get away with fighting the water in a 50, or even a 200, but in a marathon this is death. A relaxed, efficient stroke is essential.

On days when I’m not feeling so hot, I try to forget about going fast and just focus on relaxing and swimming efficiently. If I’m working out with a team, this may require slight adjustments to sets.…

Increase effortlessness, not effort

Increase effortlessness, not effort

I want to expand for a moment on the concept (discussed in the previous post) of increasing effortlessness rather than effort – within a set and over the course of a taper.

In a typical swim taper, in which athletes are preparing for events of 100 or 200m (or at most 1500m), it’s common to gauge the taper’s progress by monitoring pace times in practice. Over the course of a taper, a swimmer’s times on “pace swims” of 50 or 100m will tend to get faster.

In races of more than 30 minutes (~1.5 miles), however, it becomes less important to hit specific pace times than it is to modulate effort. This is especially true of swims 10K and longer (2+ hours).

That’s why, in preparing for tomorrow’s 10K, I’ve focused less on swimming a faster pace, but on how much effort I’m expending to swim a given pace. That’s what I mean when I say: Don’t increase effort (to swim faster), but rather, increase effortlessness (to swim the same speed with less effort).

Pick a pace time – in my case, let’s say 1:15 per 100m.…