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This last year I’ve been swimming regularly and cycling every day. More recently, I began running. I’ve thought about doing a triathlon, but I’m a little worried. I should feel great from all this exercise, but often I feel sluggish and stiff. Am I not stretching enough? Sleeping enough? Eating enough? (Wouldn’t that be a wonderful problem to have?!) Sometimes I’ll have a great swim one day, and a lethargic run the next. Yesterday I took a brisk one-hour walk with Tim after swimming the day before - the walk totally conked me out. How embarrassing. I should be perfectly capable of walking!

It turns out that multi-sport training in tough, and it’s basically impossible to excel in more than one sport at a time. The New York Times explains that the body responds to different sports in different ways. Changes that help you be a kick-ass runner may screw your swimming. And if you think about musculature, it makes sense:

Swimmers need large muscles in their backs and shoulders. Runners and cyclists want small, light upper bodies. Cyclists need large quadriceps muscles. Runners don’t, and in fact they don’t want any extra muscle weight on their legs.

It’s just as well that I don’t hope to win any races; I just wanna have fun and be fit. In fact, training for a triathlon should be good for a recreational athlete like myself. Or so says the physiologists:

Cross training — cycling one day and swimming the next, for example — lets you maintain your energy and enthusiasm and avoid injuries that come from doing the same activity day after day. That’s also part of the appeal of being a triathlete, [triathlon coach Joe Friel] said.

“It’s fun to train,” said Kelly Couch, a 30-year-old triathlete from San Mateo, Calif. “Just being a runner, just being a cyclist, can get a little stagnant.”

Agreed: doing multiple sports is appealing, if only for the variety. But what about my energy? Are there any triathletes out there who’ve experienced this? I’m not even training for real, yet, and need a little reassurance that a triathlon won’t totally wear me out for all the other good things in life, like strolling in the park and throwing frisbees and playing pool.

For Peak Performance, 3 Is Not Better Than 1 [New York Times]

The new Speedo LZR Racer swimsuit is being hailed as the “world’s fastest swimsuit” as athletes wearing the swimsuit have broken three world records within a week of its debut.

Even if I won’t be joining the 2012 Olympic hopefuls in purchasing the £320 suit, I can’t deny that the research from Speedo’s “AQUALAB” is pretty cool. The team used computational fluid dynamics (CFD) to determine the sources of drag from the skin. According to researcher Dr. Herve Morvan, “with CFD analysis we were able to use the compressive properties of the suit to make the swimmer as hydrodynamically efficient as possible.” They also used similar simulations to train athletes, showing the effects of swim cap and finger position in performance.

This suit has 5% less drag than last year’s high performance Speedo, the FS Pro, which helped swimmers break 21 world records. Hey that’s not bad. With all the FS Pros going out of fashion, maybe I can find one used on ebay?

Or maybe I’ll just stick to breaking my own records with my £12 Speedo.

Link to Speedo LZR Racer
Link to Engineering The World’s Fastest Swimsuit on Science Daily

Attendance is dwindling at my Monday night swim lesson. I guess “the new” is wearing off as some people discover they are only in lust with “intermediate swimming” (and the Clissold Leisure Centre). Selfishly, I like this: fewer students means more attention from my instructor. This makes the class more of a lesson than a practice drill.

Last Monday, as I practiced the breaststroke, my instructor reminded me to bend my knees and bring my heels as close to my butt as possible: hard work but better form for faster swimming (I tend to forget this when I’m swimming alone, and do only a half-ass job of bending my legs). We then did the backstroke for a few laps, and he picked me out of everyone to demonstrate good form!

I’m learning how to get a good cardio workout from swimming. It seems obvious now that all it takes is a little concentration and a lot of hard kicking, but when I first started I couldn’t both kick hard and breath properly at the same time. It’s taken over a year to get to this point where I feel comfortable breathing, but that’s ok - I look forward to seeing where I’m at in another year’s time.

As mentioned, I have a mild cold. I’m supposed to go to my swim lesson tonight, and I really don’t want to skip it because I already missed last week. Seeking answers, I typed my query on the Goog. Here’s what exercise physiologist Elizabeth Quinn reckons:

The average adult has two to three upper respiratory infections each year. Many athletes wonder if they should continue their training routine when sick. While research is limited, most experts recommend that if your symptoms are above the neck and you have no fever, exercise is probably safe. Intensive exercise should be postponed until a few days after the symptoms have gone away. However, if there are symptoms or signs of the flu, such as fever, extreme tiredness, muscle aches, swollen lymph glands, then at least two weeks should probably be allowed before you resume intensive training.

A small study conducted by Thomas G. Weidner at Ball State University backs up her claim. Researchers infected a group of volunteers with a rhinovirus and divided them into two groups: exercising and non-exercising. The exercising group trained at 70% of their measured heart rate for 40 minutes a day.

At the conclusion of the study, analysis of exercise training data, physical activity profiles, symptom severity scores and actual mucous weight measurement showed no statistically significant difference between the exercising and non-exercising groups.

The authors reiterated a useful model for exercising during a cold. If symptoms such as a runny nose, sneezing or a scratchy throat exist (so-called “above-the-neck” symptoms), it is probably safe for an individual to exercise at a lower intensity. If these symptoms recede in the first few minutes of exercise, intensity may be increased accordingly. Exercise is not, however, recommended for individuals experiencing “below-the-neck” symptoms of a cold, such as fever, sore muscles or joints, vomiting or diarrhea, or a productive cough.

I’ll see if I can back up Thomas and Elizabeth’s claims after my swim tonight. I’ve exercised on a cold in the past but this always seemed to make it worse, but it’s quite likely I pushed myself too hard. In fact, I took two very leisurely turns around Clissold Park this morning and it felt terrific; it cleared up my nose and, well, I couldn’t have asked for a more beautiful day.

My swim is from 7:30-8:15. I am going to have a light meal at 5ish, and then something small after my swim, following which I am going to crawl into bed and try to sleep for a very long time.

Link to Should I exercise with a cold? at About.com
Link to Can you still exercise even with a runny nose? at BlueSuitMom.com