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Here is the reply on my request. I like to thank everybody very much.
M.I. Christel
On Fri, 14 Aug 1998 20:53:45 +0100
I wrote:
> We did a study on the kinematics (Optotrac northern digital) of
> reach-to-grasp movements towards small objects and found significant sex
> differences (5 females, 5 males) in the thumb-forefinger aperture while
> preparing the grip. We assume, that these sex differences are due to hand
> morphology, thus due to the proportional part of thumb and fore finger.
> Did anybody similar studies? Could there be other reasons than the
> morphology for these differences? I would be pleased about references and
> other communication? Of course, I will post a summary of replies.
> Thanks
>
>
> M. I. Christel, PHD
> Free University of Berlin
> Biology
> Anthropology
> Fabeckstr. 15
> D-14195 Berlin
> Germany
While you may be correct in your assumptions concerning sex differences in
morphology, you may want to consider Dyspraxia (Clumsy child syndrome)
which is estimated to affect 8% of children here in the UK. Although, in a
small sample like yours it is doubtful that you would have affected
subjects.Some of the features of this syndrome are: laxity of ligaments,
poor proprioception, and poor hand-eye coordination. It seems to affect
male children more than female.
Yours,
Ian Rogers M.Med.Sci.
232, Broomhall St,
Sheffield S3 7SQ
UK
Tel 0114 276 1018
From: Francisco Valero-Cuevas
Subject: Re: Sex diff in hand proportion
To: mchriste@zedat.fu-berlin.de
Date: Fri, 14 Aug 1998 14:32:03 -0700 (PDT)
One study has reported gender differences in hand anatomy:
Ateshian, G.A., M.P. Rosenwasser, and V.C. Mow, Curvature
characteristics and congruence of the thumb carpometacarpal joint:
Differences between female and male joints. Journal of Biomechanics,
1992. 25(6): p. 591-607.
But did not study its effect on kinematics. This may be one
contributing factor to the differences you see.
Another study that may be of use to you:
Buchholz, B., T.J. Armstrong, and S.A. Goldstein,
Anthropometric data for describing the kinematics of the human hand.
Ergonomics, 1992. 35(3): p. 261-73.
You may want to find out if Johansson has found gender differences in
his studies:
Johansson, R., Sensory and memory information in the control
of dexterous manipulation, in Neural bases of motor behaviour, F.
Lacqaniti and P. Viviani, Editors. 1996, Kluwer Academic Publishers:
Netherlands. p. 205-260.
Good Luck,
-Francisco
************************************************** *************
Francisco Valero-Cuevas, PhD
Research Associate and Lecturer Biomedical Engineer
Biomechanical Engineering Division VA Palo Alto HCS
Mechanical Engineering Department Rehab. R&D Center (153)
Stanford University
3801 Miranda Ave
Palo Alto, CA
94304-1200
(mailing address)
(650) 493-5000 ext 66254; (650) 493-4919 FAX
valero@roses.stanford.edu
http://www.stanford.edu/~fvalero
************************************************** *************
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M.I. Christel
On Fri, 14 Aug 1998 20:53:45 +0100
I wrote:
> We did a study on the kinematics (Optotrac northern digital) of
> reach-to-grasp movements towards small objects and found significant sex
> differences (5 females, 5 males) in the thumb-forefinger aperture while
> preparing the grip. We assume, that these sex differences are due to hand
> morphology, thus due to the proportional part of thumb and fore finger.
> Did anybody similar studies? Could there be other reasons than the
> morphology for these differences? I would be pleased about references and
> other communication? Of course, I will post a summary of replies.
> Thanks
>
>
> M. I. Christel, PHD
> Free University of Berlin
> Biology
> Anthropology
> Fabeckstr. 15
> D-14195 Berlin
> Germany
While you may be correct in your assumptions concerning sex differences in
morphology, you may want to consider Dyspraxia (Clumsy child syndrome)
which is estimated to affect 8% of children here in the UK. Although, in a
small sample like yours it is doubtful that you would have affected
subjects.Some of the features of this syndrome are: laxity of ligaments,
poor proprioception, and poor hand-eye coordination. It seems to affect
male children more than female.
Yours,
Ian Rogers M.Med.Sci.
232, Broomhall St,
Sheffield S3 7SQ
UK
Tel 0114 276 1018
From: Francisco Valero-Cuevas
Subject: Re: Sex diff in hand proportion
To: mchriste@zedat.fu-berlin.de
Date: Fri, 14 Aug 1998 14:32:03 -0700 (PDT)
One study has reported gender differences in hand anatomy:
Ateshian, G.A., M.P. Rosenwasser, and V.C. Mow, Curvature
characteristics and congruence of the thumb carpometacarpal joint:
Differences between female and male joints. Journal of Biomechanics,
1992. 25(6): p. 591-607.
But did not study its effect on kinematics. This may be one
contributing factor to the differences you see.
Another study that may be of use to you:
Buchholz, B., T.J. Armstrong, and S.A. Goldstein,
Anthropometric data for describing the kinematics of the human hand.
Ergonomics, 1992. 35(3): p. 261-73.
You may want to find out if Johansson has found gender differences in
his studies:
Johansson, R., Sensory and memory information in the control
of dexterous manipulation, in Neural bases of motor behaviour, F.
Lacqaniti and P. Viviani, Editors. 1996, Kluwer Academic Publishers:
Netherlands. p. 205-260.
Good Luck,
-Francisco
************************************************** *************
Francisco Valero-Cuevas, PhD
Research Associate and Lecturer Biomedical Engineer
Biomechanical Engineering Division VA Palo Alto HCS
Mechanical Engineering Department Rehab. R&D Center (153)
Stanford University
3801 Miranda Ave
Palo Alto, CA
94304-1200
(mailing address)
(650) 493-5000 ext 66254; (650) 493-4919 FAX
valero@roses.stanford.edu
http://www.stanford.edu/~fvalero
************************************************** *************
-------------------------------------------------------------------
To unsubscribe send UNSUBSCRIBE BIOMCH-L to LISTSERV@nic.surfnet.nl
For information and archives: http://www.bme.ccf.org/isb/biomch-l
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