Weight of Human Arm, Leg, Lower Leg as
percentage of total body weight
Implications for relative weights of
wristweights, ankleweights, thighweights, and weightvest weight in
training
Amazing how even reputable esteemed sources
disagree with each other re these percentages, how flippant they are with
accuracy re these percentages.
I estimate that the leg weighs 18% of body weight.
I estimate from the bottom of the buttock to the knee including half the knee,
is 58% of the leg weight, or 10% of the total body weight. I estimate that from
the knee to the foot, including half the knee and the foot, is 8% of total body
weight. I estimate an arm to be 5% of total body weight. I estimate a head to be
5% of a body weight of 170 lbs.
I estimate (approximations) that the
body excluding the head is 95% of total bodyweight, an upper leg is 10% of
total body weight, and a lower leg is 8% of total body weight, and an arm is 5%
of total body weight.
This leaves out the buttocks, which are used in
running (http://answers.yahoo.com/question/index?qid=20070515025853AAcCpuo).
Based on the fact that the distance from my knee to the bottom of my buttock is
(approx) 13", whereas the distance from the bottom of the buttock to the top of
the buttock is 6", I estimate one buttock to be (approx) 6% of total body
weight. This gives totals of: body minus head, 95%; one arm, 5%; one upper leg,
16%; one lower leg, 8%.
(A complication is that the upper leg bears part of
the burden of the weight on the ankle; the ankleweight is not handled
exclusively by the lower leg. By way of contrast, the lowerleg has little to do
with the burden of the thighweight. But such is a detail that a skilled
minority with the time to put into it can attend to).
Therefore, when it comes to things like
wristweights, weightvest, thigh weights, ankleweights, I estimate that the
proportions of the weights should be: wristweights, 5% of weightvest weight;
ankleweights, 8% of weightvest weight, thighweights, 16% of weightvest
weight.
This translates into easily remembered and worked
with proportions of: wrist: 1; ankle: 2; thigh: 4; weightvest: 20.
Thus for example, if the weight on each ankle is
1/4 lb, the weight on each wrist should be 1/8 lb, the weight on each thigh
should be, 1/2 lb, and the weight on the weight vest should be, 5 lbs.
Table: Percentage of total bodyweight ascribed to
parts of the body by internet sources
Boldface=especially reputable or
important source
















Arm 
Leg 
Lower Leg 
Upper leg 
torso 
head 









5.5%
5.1%
5.1%

24%
4 times an
arm (22%);
17%
20%
16%
20%
16%
14%
15%
164/9=18%
10%
10%
avg after discarding
high and low

7.2%(including
knee)
5.4%
(knee+calf)
1.8%
(ankle+foot)
The length of my knee plus my calf
excluding the ankle/ foot I estimate as 13"; the vert length of my knee as
4"; this I estimate based on the above data, that one knee specifically,
is 1.7% of total body weight, the calf is 3.7% of total body weight. The
source of the above data gave the leg from the bottom of the buttock down
in total as 15%. If half of the knee is assigned to the upper leg, and
half of the knee is assigned to the lower leg, this gives a figure of
0.85+3.7+1.7=6.25% for the lower leg, and 8.75% for the upper
leg.
8%

8%
8.75%
(see note in
col to left)

50%

8 lbs (many
sources
report this)
(5% of
175 lb
man)
























key sources: