Dear Richard Baker,

As Winter described, Plangenhoef cited Dempster's data as
you wrote in your original message.

However, Clauser et al. who worked the same laboratory cited
Dempster's work and gave the other different values (calf
without foot is 0.433, and calf with foot is 0.437). In
addition, in 1963, Braune and co-workers including Dempster
reported that CM of calf is 0.433 and calf with foot is 0.434.
I can accept these values rather than 0.606.

Putting all things together, I think that Plagenhoef's book has
typographical errors and Winter cited the data with the errors.
It's my guess. Otherwise, you can check all of Dempster's paper.
He published several papers, at least two papers in 1955.

Plangenhoef. Patterns of Human Motion -a cinematographic
analysis-, Prentice-hall, Inc. Englewood Cliffs, New Jersey,

Miller & Nelson. Biomechanics of Sport. Lea & Febiger.
Philadelphia, 1973

Dempster, W.T. Space requirements of the seated operator.
WADC Tech. Report, 55-159. 1955

Dempster, W.T. The anthropometry of body action. Ann. N.Y.
Acad. Sci. 63, 559-585, 1955

Clauser et al. Weight, volume, and center of mass of segment
of the human body. AMRL-TR-69-70. Wright-Patterson Air
Force Base. 1969

Braune et al. Human mechanics -four monographs abridged-
AMRL-TDR-63-123. Wright-Patterson Air Force Base. 1963


Tomoyuki Matsuo
Faculty of Health & Sport Sciences,
Osaka Univ.
tel & fax +81-6-6850-6019 (desk)
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