Variation in trunk kinematics influences variation in step width during treadmill walking by older and younger adults

Meijer

et al. 2015

Clinical Biomechanics

Section: Frontal Plane Stabilitysupporting

confidence: 65%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

“…In healthy subjects, step width appears to be adapted on-line to frontal plane trunk kinematics in preceding mid-stance (Hurt et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Frontal plane kinematics in walking with moderate hip osteoarthritis: Stability and fall risk

Meijer

et al. 2015

Clinical Biomechanics

“…Such results are consistent with previous research on balance control during walking, indicating that step width variability in the ML direction is more prone to visual influence. 32 Although no stepping data were collected in the current study, it is feasible that ML trunk variability observed is strongly correlated with the step width variability, [33][34][35] potentially leading to an increase in metabolic cost as well. 34,36 This finding is also in line with previous studies on gait/balance after grade 2 concussion, revealing an increase in ML sway during walking with divided attention within the first 48 h after experiencing neurological stress from head impact.…”

Section: Subconcussive Head Impact Diminishes Lateral Balance Controlmentioning

confidence: 92%

Vestibular Dysfunction after Subconcussive Head Impact

Hwang

Lei

Kawata

et al. 2017

Journal of Neurotrauma

Current thinking views mild head impact (i.e., subconcussion) as an underrecognized phenomenon that has the ability to cause significant current and future detrimental neurological effects. Repeated mild impacts to the head, however, often display no observable behavioral deficits based on standard clinical tests, which may lack sensitivity. The current study investigates the effects of subconcussive impacts from soccer heading with innovative measures of vestibular function and walking stability in a pre-0-2 h, post-24 h post-heading repeated measures design. The heading group (n = 10) executed 10 headers with soccer balls projected at a velocity of 25 mph (11.2 m/sec) over 10 min. Subjects were evaluated 24 h before, immediately after, and 24 h after soccer heading with: the modified Balance Error Scoring System (mBESS); a walking stability task with visual feedback of trunk movement; and galvanic vestibular stimulation (GVS) while standing with eyes closed on foam. A control group (n = 10) followed the same protocol with no heading. The results showed significant decrease in trunk angle, leg angle gain, and center of mass gain relative to GVS for the heading group compared with controls. Medial-lateral trunk orientation displacement and velocity during treadmill walking increased immediately after mild head impact for the heading group compared with controls. Controls showed an improvement in mBESS scores over time, indicating a learning effect, which was not observed with the heading group. These results suggest that mild head impact leads to a transient dysfunction in vestibular processing, which deters walking stability during task performance.

American Journal of Biological Anthropology

Coordination of trunk motion during bipedal walking in the frontal plane: A comparison between Homo sapiens, Macaca fuscata, and an exploratory study on a gibbon

Kinoshita

Goto

Nakano

et al. 2022

Objectives: In human walking, the pelvis lists toward the swing side during the support phase while the thorax lists toward the stance side. In contrast, during bipedal walking in chimpanzees, both the pelvis and thorax list toward the stance side during the support phase, making their body mass oscillation larger than that in humans.However, aside from a few reports on chimpanzees and macaques, studies on the relationship between trunk movements and step width during bipedal walking in nonhuman primates are limited. Materials and Methods:We collected three-dimensional trunk kinematic data during bipedal walking in five humans and five Macaca fuscata. While walking, the positions of cluster markers, which defined trunk segments, were recorded by multiple video cameras. Segmental xyz coordinates were digitized, and frontal rotations and translations were calculated using motion analysis software. Results:The kinematic approximation of the safety ratio, which is the center of mass motion relative to the step width, was similar in all species. Nevertheless, the relationship between intratrunk movements and step width varied among the species.Discussion: Our results support the hypothesis that trunk movement in the frontal plane in humans is unique among anthropoid primates. Because the safety ratio is within a similar range, regardless of habitual or facultative bipeds, this further supports the use of fossil footprints to estimate the center of mass motion.