[pct-l] hiking calories

[Yoshihiro Murakami]

Dear Hikes and Bikes

It depend on your body weight. The opinion of newspaper is wrong.

Based on the Dynamic walking model ( Kuo, A.D. 2007 The six
determinants of gait and the inverted pendulum analogy: Human Movement
Science, 26, 617-656.)
The energy consumption is predictable by the simple mathematical
equation as follows:
WR =1/8 f^3 s^4
where WR is work rate, f is normalized step frequency, and s is
normalized step length.
WR is indicated as W/kg in in other pages. So WR is energy consumption
per 1kg body weight. Then the total energy comsuption is estimated by

total_energy = body_weight x WR

if your body_weight is 120 Lb then
total_energy = 120 x WR

If backpack weight is added,
toal energy =( body_weight + backpack_weight ) x WR

if your body_weight is 120 Lb and backpack_weight is 11 Lb then
total energy = (120 + 11) x WR
The ratio is 131 / 120 = 1.092
This means 9 percent increace.

The increace rate is depend on your body_weight , mile hiked is not
related to the percentage, it related to the total energy consumption.




2012/4/8 Hikes and Bikes <hikingis4me2 at yahoo.com>:
> My latest newspaper insert (Rejuvenate) from a local hospital says that "an 11-pound backpack increases the number of calories you burn by about 6 percent" when hiking.  Is there any data on this for weights and miles hiked?
>
> Lost and Found
>
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-- 
Sincerely
--------------- --------------------------------------
Hiro    ( Yoshihiro Murakami  村上宣寛 )
facebook  http://www.facebook.com/completewalker
Blogs  http://completewalker.blogspot.com/
Photo  http://picasaweb.google.co.jp/CompleteWalker/
Backpacking since about 1980 in Japan
JMT, 2009, 2010, 2011(half).
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