Yr Athro John Challis
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Cyswllt
Ebost: -
Rhif Ffon: -
Proffil
Enillodd John Challis radd PhD mewn Biomecaneg ym 1991 o Brifysgol Loughborough. Mae bellach yn Athro Cinesioleg a Chyfarwyddwr y Rhaglen i Raddedigion yn Adran Ginesioleg Prifysgol Penn State, UDA.
Ymchwil
Prif Feysydd o
Ddiddordeb
Mesur a modelu
paramedrau cymhleth sy’n gysylltiedig â model dynameg uniongyrchol o’r system
gyhyrysgerbydol ddynol, gyda’r bwriad o edrych ar swyddogaeth, pwrpas a
chyd-drefniant cyhyrau yn y corff byw.
Ymchwilio i
effeithiau dynol, gyda phwyslais ar fesur effaith y m
às
"siglog" ar lwyth y cymalau.
Datblygu
protocolau mesur diwygiedig (ffotogrametreg tri dimensiwn, penderfynu ar
gyfeiriadedd a safle segment, gwahaniaethiad a llyfnhau data).
Ymchwilio i
weithdrefnau ar gyfer diffinio paramedrau inertiol rhannau o’r corff.
Cyhoeddiadau
Winter, S. L. & Challis, J.H. (2010) The expression of
the skeletal muscle force-length relationship in vivo: a simulation study. Journal
of Theoretical Biology, 262, 634-643.
Winter, S. L. and Challis, J. H. (2010) The force-length
curves of the human rectus femoris and gastrocnemius muscles in vivo. Journal
of Applied Biomechanics, 26, 45-51.
Challis. J.H., and Pain, M.T.G. (2008) Soft tissue motion influences skeletal loads
during impacts. Exercise and Sports
Science Reviews 36, 71-75.
Domire, Z.J., and Challis, J.H. (2007) The influence of an elastic tendon on the
force producing capabilities of a muscle during dynamic movements. Computer Methods in Biomechanics &
Biomedical Engineering 10, 337-341.