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Power to weight ratio

Posted by Nancy Clark RD CSSD on Oct 9, 2008 8:18:22 PM

More often than not, the avid bicyclists I counsel express concern about the power to weight ratio. As one cyclist, Hal, explained to me. “Nancy, biking is all about the power to weight ratio. I’ll be more powerful on my bike if I’m lighter. I really want to lose about 20 pounds so I’ll be able to bike faster.”  I asked this lean man what his wife thought about this idea. He responded, “She thinks I’m crazy.”  I silently agreed with her; Hal didn’t have 20 pounds of excess fat to lose.

 

I reviewed Hal’s eating patterns and made some suggestions to help him ride faster by being better fueled. In his efforts to lose weight, he currently was actively restricting his breakfast and lunch.  No wonder he lagged on energy during his late-afternoon bike rides. He thought he was slow because he was weighed too much. I think he was slow because he was underfueled.

 

I’ll see him for a follow-up consultation in a month. If he’s like other cyclists, he’ll happily report, “I haven’t lost any weight, but by eating better, I’m much faster and I’ve been setting PRs.”

1,415 Views Tags: weight, dieting, body_image, bicyclist


Oct 17, 2008 7:07 AM zbitt zbitt    says:

Getting hung up on how much you weigh is a slippery slope. Not everyone has the genetic makeup and the body frame to operate efficiently while weighing only 125lbs. I'm a firm believer that one must maintain a weight that is fairly natural to what their body frame and genetics allow. I'm 5'9" and about 143 lbs and ran a debut marathon of 2 hrs and 36 minutes, which is significantly superior in relation to any of my 10k or 5k race times where I weighed under 140lbs. One must remember that one of the world's best distance runners ever was Steve Prefontaine, and he was 5'9" 152lbs. Hardly your typical elite endurance size.

Apr 30, 2009 9:16 AM thefirstbruce thefirstbruce    says:

This is an interesting topic always. Serious/obsessive cyclists are always trying to get their watts/kg from 3 up towards 6 (tour de france standard).

 

And they starve themselves and do no strength work for their upper body in the deluded hope this helps.

 

I have trained cyclists in the past (am a physiotherapist and physiologist) and recommend they regularly test themselves (at least once a fortnight) on the same hill climb (5-15 minute climb)....if they are losing too much weight, their times will deteriorate....and the log will be enough proof to their own minds, that there is an optimum balance between body wt and power.