John H Challis
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Explore the profile of John H Challis including associated specialties, affiliations and a list of published articles.
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75
Citations
698
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Recent Articles
1.
Leonard C, Challis J
J Strength Cond Res
. 2024 Jul;
38(9):1635-1639.
PMID: 39074198
Leonard, C and Challis, JH. The expression of the force-length properties of the gastrocnemius in ice hockey players. J Strength Cond Res 38(9): 1635-1639, 2024-Although the force-length properties of muscles...
2.
Davis D, Challis J
Comput Methods Biomech Biomed Engin
. 2024 Mar;
:1-12.
PMID: 38515264
The human foot's arch is thought to be beneficial for efficient gait. This study addresses the extent to which arch stiffness changes alter the metabolic energy requirements of human gait....
3.
Wager J, Challis J
PLoS One
. 2024 Feb;
19(2):e0294691.
PMID: 38349945
The primary purpose of this study was to compare the ankle joint mechanics, during the stance phase of running, computed with a multi-segment foot model (MULTI; three segments) with a...
4.
Challis J
J Biomech Eng
. 2023 Oct;
145(12).
PMID: 37792499
Image-based motion-analysis systems typically place markers on the bodies of interest. The error in determining segment attitude from these markers is a function the marker position errors, the number of...
5.
6.
Steele J, Challis J
J Biomech
. 2023 Mar;
152:111547.
PMID: 36996599
The presence of successful female role models in biomechanics can encourage girls, women, and other underrepresented groups in STEM fields to pursue and remain within the discipline. It is, therefore,...
7.
Davis D, Challis J
J Biomech
. 2023 Mar;
151:111529.
PMID: 36913798
The arch of the human foot has historically been likened to either a truss, a rigid lever, or a spring. Growing evidence indicates that energy is stored, generated, and dissipated...
8.
Davis D, Challis J
PLoS One
. 2022 Sep;
17(9):e0274141.
PMID: 36074770
Human foot rigidity is thought to provide a more effective lever with which to push against the ground. Tension of the plantar aponeurosis (PA) with increased metatarsophalangeal (MTP) joint dorsiflexion...
9.
Masters S, Challis J
J Appl Biomech
. 2022 Mar;
38(2):69-75.
PMID: 35231882
Soft tissue moves relative to the underlying bone during locomotion. Research has shown that soft tissue motion has an effect on aspects of the dynamics of running; however, little is...
10.
Challis J
J Biomech
. 2022 Feb;
133:110982.
PMID: 35131678
In a state-space representation of the equations of motion for a system of rigid bodies one component of these equations is the so-called inertia matrix. This matrix can be used...