From: Rob Morley on
On Sun, 6 Dec 2009 14:12:28 -0000
"mileburner" <mileburner(a)btinternet.com> wrote:

> You must be fit if you can run to ASDA at 12mph. I would be lucky to
> manage it at 7mph.

I'd be lucky to make it there at 7mph and not be on crutches for a few
weeks afterwards, but I was pretending that I'm not unfit with a
knackered knee.

From: MasonS on
On 6 Dec, 14:19, Ian Dalziel <iandalz...(a)lineone.net> wrote:
> On Sun, 06 Dec 2009 13:12:08 GMT, Strangely Composed
>
>
>
>
>
> <h...(a)there.nowhere> wrote:
> >If you're going to quibble... Ian Dalziel said:
>
> >>>> Cycling does not require more energy than walking.
>
> >>>Even if you assume cycling at walking pace the cyclist still has to move
> >>>the mass of the bike as well as him/herself, which will take more
> >>>energy.
>
> >>>There is also additional energy required to overcome the friction
> >>>inherent in the mechanisms of the cycle.
>
> >>>As cyclists tend to move faster than walkers other factors such as
> >>>overcoming wind resistance and kinetic energy conversion.
>
> >> You're using the energy to *accelerate* the mass. Try this - a bike and
> >> a runner set off from the same point and accelerate to the same speed.
> >> Then, simultaneously, the runner stops running and the cyclist stops
> >> pedalling. Will they cover the same distance?
>
> >That largely depends on whether or not the cyclist & runner accelerate
> >and decelerate at the same rate. If they do then they will cover the same
> >distance.
>
> >If you assume the walker & cyclist are the same weight then the cyclist
> >has to use more energy to accelerate not only his own mass but the mass
> >of the cycle as well.
>
> Indeed. Then once he's accelerated, the effects of this "wheel" thing
> which you seem not to have heard of come into play. I think you'll
> find a rolling cycle does not decelerate at the same rate as a
> pedestrian.
>
> --
>
> Ian D- Hide quoted text -
>
> - Show quoted text -

When I used to run, my Max Heart Rate would be 185 when running at 12
mph. 1
From: Conor on
In article <17ada0b0-5650-4673-aa7f-
ff7c5c12785d(a)g31g2000vbr.googlegroups.com>, MasonS(a)BP.com says...
>
> On 6 Dec, 13:22, Conor <co...(a)gmx.co.uk> wrote:
> > In article <9794ca9a-552a-4520-a03e-618921e70364
> > @x16g2000vbk.googlegroups.com>, Mas...(a)BP.com says...
> >
> > > Don't car drivers have to eat as well?
> >
> > Not to replace energy used to transport themselves.
> >
> > > Stop clutching at straws.
> >
> > You should.
> >
> > --
> > Conorwww.notebooks-r-us.co.uk
> >
> > I'm not prejudiced. I hate everybody equally.
>
> I eat about 2500 calories a day

So 25% more than the recommended daily allowance.

> and am around 12 stone.

So underweight most likely.




--
Conor
www.notebooks-r-us.co.uk

I'm not prejudiced. I hate everybody equally.
From: MasonS on
On 6 Dec, 14:19, Ian Dalziel <iandalz...(a)lineone.net> wrote:
> On Sun, 06 Dec 2009 13:12:08 GMT, Strangely Composed
>
>
>
>
>
> <h...(a)there.nowhere> wrote:
> >If you're going to quibble... Ian Dalziel said:
>
> >>>> Cycling does not require more energy than walking.
>
> >>>Even if you assume cycling at walking pace the cyclist still has to move
> >>>the mass of the bike as well as him/herself, which will take more
> >>>energy.
>
> >>>There is also additional energy required to overcome the friction
> >>>inherent in the mechanisms of the cycle.
>
> >>>As cyclists tend to move faster than walkers other factors such as
> >>>overcoming wind resistance and kinetic energy conversion.
>
> >> You're using the energy to *accelerate* the mass. Try this - a bike and
> >> a runner set off from the same point and accelerate to the same speed.
> >> Then, simultaneously, the runner stops running and the cyclist stops
> >> pedalling. Will they cover the same distance?
>
> >That largely depends on whether or not the cyclist & runner accelerate
> >and decelerate at the same rate. If they do then they will cover the same
> >distance.
>
> >If you assume the walker & cyclist are the same weight then the cyclist
> >has to use more energy to accelerate not only his own mass but the mass
> >of the cycle as well.
>
> Indeed. Then once he's accelerated, the effects of this "wheel" thing
> which you seem not to have heard of come into play. I think you'll
> find a rolling cycle does not decelerate at the same rate as a
> pedestrian.
>
> --
>
> Ian D- Hide quoted text -
>
> - Show quoted text -

When I used to run, at 12 mph my Max Heart Rate was 185 bpm. 10 years
later I can cycle on the flat at 20 mph and my heart rate barely gets
to 120 bpm. It is obvious that a cyclist uses fewer calories. Obvious
unless you are trying to point the finger at a cyclist breathing while
driving a 4 litre truck doing 15 mpg.

--
Simon Mason
From: MasonS on
On 6 Dec, 14:29, Conor <co...(a)gmx.co.uk> wrote:
> In article <17ada0b0-5650-4673-aa7f-
> ff7c5c127...(a)g31g2000vbr.googlegroups.com>, Mas...(a)BP.com says...
>
>
>
>
>
>
>
> > On 6 Dec, 13:22, Conor <co...(a)gmx.co.uk> wrote:
> > > In article <9794ca9a-552a-4520-a03e-618921e70364
> > > @x16g2000vbk.googlegroups.com>, Mas...(a)BP.com says...
>
> > > > Don't car drivers have to eat as well?
>
> > > Not to replace energy used to transport themselves.
>
> > > > Stop clutching at straws.
>
> > > You should.
>
> > > --
> > > Conorwww.notebooks-r-us.co.uk
>
> > > I'm not prejudiced. I hate everybody equally.
>
> > I eat about 2500 calories a day
>
> So 25% more than the recommended daily allowance.
>
> > and am around 12 stone.
>
> So underweight most likely.
>
> --
> Conorwww.notebooks-r-us.co.uk
>
> I'm not prejudiced. I hate everybody equally.- Hide quoted text -
>
> - Show quoted text -

I am 6ft 1ins so have a BMI of 22.1. Underweight is 19 or lower, so I
am normal, not underweight.

--
Simon Mason