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The effect of external lateral stabilization on the use of foot placement to control mediolateral stability in walking and running

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31 days ago
The effect of external lateral stabilization on the use of foot placement to control mediolateral stability in walking and running https://t.co/3IUkxL9oPR https://t.co/bYLiutaLI5
RT @MahakiReza: Foot placement strategy is the main mechanism to control the ML #stability in #walking and #running. However, this strategy…
RT @MahakiReza: Foot placement strategy is the main mechanism to control the ML #stability in #walking and #running. However, this strategy…
RT @MahakiReza: Foot placement strategy is the main mechanism to control the ML #stability in #walking and #running. However, this strategy…
77 days ago
RT @MahakiReza: Foot placement strategy is the main mechanism to control the ML #stability in #walking and #running. However, this strategy…
RT @Xenpaper: The effect of external lateral stabilization on the control of mediolateral stability in walking and running https://t.co/I2v…
RT @MahakiReza: Foot placement strategy is the main mechanism to control the ML #stability in #walking and #running. However, this strategy…
Foot placement strategy is the main mechanism to control the ML #stability in #walking and #running. However, this strategy is more accurate in walking than in running. Read the new version of our preprint with @sjoerdmb and @DieenJaap in @PeerJPreprints https://t.co/p1jYZmMZBp. https://t.co/LBGqpWvvPW
78 days ago
The effect of external lateral stabilization on the control of mediolateral stability in walking and running https://t.co/I2vJAAULVE https://t.co/UQUMb0LJoL
@alesantuz @royalsociety @TFettrow @jhreimann @JesseCDean @nidhi_s91 @manojmovement above are not all directly related to pert or sensory weighting, but also work which I think is novel/cool/important, and would include in the review now. 2 others; Dingwell & Cusumano: https://t.co/3IcRG6pv2n and one by @MahakiReza @DieenJaap and me; https://t.co/gVbUYeWaE9
RT @MahakiReza: Foot placement strategy is more critical in #walking than in #running. Our revised preprint with @sjoerdmb and @DieenJaap h…
167 days ago
RT @MahakiReza: Foot placement strategy is more critical in #walking than in #running. Our revised preprint with @sjoerdmb and @DieenJaap h…
RT @DieenJaap: Our revised preprint has been published today in @PeerJPreprints https://t.co/whdBcbdmbP #Kinesiology wih @sjoerdmb and @Mah…
167 days ago
RT @DieenJaap: Our revised preprint has been published today in @PeerJPreprints https://t.co/whdBcbdmbP #Kinesiology wih @sjoerdmb and @Mah…
RT @MahakiReza: Foot placement strategy is more critical in #walking than in #running. Our revised preprint with @sjoerdmb and @DieenJaap h…
Foot placement strategy is more critical in #walking than in #running. Our revised preprint with @sjoerdmb and @DieenJaap has been published today in @PeerJPreprints https://t.co/p1jYZmMZBp #Kinesiology
RT @DieenJaap: Our revised preprint has been published today in @PeerJPreprints https://t.co/whdBcbdmbP #Kinesiology wih @sjoerdmb and @Mah…
RT @DieenJaap: Our revised preprint has been published today in @PeerJPreprints https://t.co/whdBcbdmbP #Kinesiology wih @sjoerdmb and @Mah…
Our revised preprint has been published today in @PeerJPreprints https://t.co/whdBcbdmbP #Kinesiology wih @sjoerdmb and @MahakiReza
RT @MahakiReza: My article 'The effect of external lateral stabilization on the control of mediolateral stability in walking and running' w…
278 days ago
RT @MahakiReza: My article 'The effect of external lateral stabilization on the control of mediolateral stability in walking and running' w…
My article 'The effect of external lateral stabilization on the control of mediolateral stability in walking and running' was one of the top 5 most viewed #Kinesiology articles published in @thePeerJ journal in 2018!
RT @sjoerdmb: New preprint with @MahakiReza and @DieenJaap , in which we use the methods developed by @manojmovement to study the control o…
New preprint with @MahakiReza and @DieenJaap , in which we use the methods developed by @manojmovement to study the control of ML stability trough foot placement in #walking and #running; https://t.co/gVbUYeWaE9 . Suggestions more than welcome!
My preprint with @sjoerdmb and @DieenJaap has been published today in @PeerJPreprints. #gait #walking #running #balance #stability You can read it here: https://t.co/p1jYZmMZBp
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Supplemental Information

Schematic representation of the experimental set up

(A) Schematic representation of the experimental set up. Inset (B) shows the stabilization in more detail. (1) frame; (2) springs; (3) height-adjustable horizontal rail; (4) ball-bearing trolley freely moving in anterior-posterior direction; (5) slider freely moving in vertical direction; (6) vertical rail; and (7) rope attached to frame.

DOI: 10.7287/peerj.preprints.27244v5/supp-1

Flow of data processing adopted in this study

DOI: 10.7287/peerj.preprints.27244v5/supp-2

The % of nonsignificant β2's during normal and stabilized conditions in walking and running trials per each % of swing phase

DOI: 10.7287/peerj.preprints.27244v5/supp-3

The ability of ML trunk CoM state to predict subsequent ML foot placement (R2) during normal (solid) and stabilized (dashed) conditions in walking (blue) and running (green). The shaded regions indicate standard error of R2

DOI: 10.7287/peerj.preprints.27244v5/supp-4

The differences of R2 between normal walking and running. The shaded areas indicate significant effects in the corresponding portion of the swing phase (based on the results of SPM paired t-test)

DOI: 10.7287/peerj.preprints.27244v5/supp-5

The effect of external lateral stabilization on (A) step width and (B) step width variability in walking and running

Condition effect: The effect of external lateral stabilization on (A) step width and (B) step width variability in walking and running. # represents the significant differences of step width and step width variability between normal and stabilized conditions (based on the results of Bonferroni post-hoc tests). * represents the significant differences of step width and step width variability between normal walking and running (based on the results of paired t-test). The error bars represent the standard deviation.

DOI: 10.7287/peerj.preprints.27244v5/supp-6

The effect of external lateral stabilization on R2 in walking and running

(A) Condition effect: The effect of external lateral stabilization on R2 in walking and running. (B) Locomotion mode effect: The differences of R2 between walking and running in both conditions (normal & stabilized). (C) Interaction effect (condition × locomotion mode effect): The differences of external lateral stabilization effect on R2 between walking and running. The shaded areas indicate significant effects in the corresponding portion of the swing phase.

DOI: 10.7287/peerj.preprints.27244v5/supp-7

The comparsion of R2 between legs in walking and running.

(A) % of variance in ML foot placement that can be explained by ML trunk CoM state (R2) in walking and running. (B) The differences of R2 between left and right legs in walking and running.

DOI: 10.7287/peerj.preprints.27244v5/supp-9

The effect of speed on R2 in running

(A) % of variance in ML foot placement that can be explained by ML trunk CoM state (R2) in running with three different speeds [2.08, 2.50, and 2.92 m/s]. (B) The effect of running speeds (2.08, 2.50, and 2.92 m/s) on R2. The shaded regions indicate standard error of R2.

DOI: 10.7287/peerj.preprints.27244v5/supp-10

The effect of speed on step width in running

Step width was significantly decreased by increasing in running speed (F (1, 2) = 9.25, p = 0.002) (Fig. S3).

DOI: 10.7287/peerj.preprints.27244v5/supp-11

The effect of running on step width variability in running

There was no significant main effect of speed on step width variability in running (F (1, 2) = 1.48, p = 0.254) (Fig. S4).

DOI: 10.7287/peerj.preprints.27244v5/supp-12

The effect of external lateral stabilization on energy cost in walking and running

Condition effect: The effect of external lateral stabilization on energy cost in walking and running. # represents the significant differences of energy cost between normal and stabilized conditions (based on the results of Bonferroni post-hoc). Error bars represent standard deviation.

DOI: 10.7287/peerj.preprints.27244v5/supp-13

Additional Information

Competing Interests

The authors declare that they have no competing interests.

Author Contributions

Mohammadreza Mahaki conceived and designed the experiments, performed the experiments, analyzed the data, prepared figures and/or tables.

Sjoerd M Bruijn conceived and designed the experiments, analyzed the data, contributed reagents/materials/analysis tools, prepared figures and/or tables, authored or reviewed drafts of the paper, approved the final draft.

Jaap H. van Dieën conceived and designed the experiments, analyzed the data, contributed reagents/materials/analysis tools, authored or reviewed drafts of the paper, approved the final draft.

Human Ethics

The following information was supplied relating to ethical approvals (i.e., approving body and any reference numbers):

This study has been approved by the local ethics committee of the Faculty of Behavioral and Movement Sciences of the Vrije Universiteit, Amsterdam.

Data Deposition

The following information was supplied regarding data availability:

The data and code can be found on https://surfdrive.surf.nl/files/index.php/s/MzdlDXoVQwzh50z?path=%2F, and will shortly be posted to Zenodo.

Funding

SMB was funded by a VIDI grant (016.Vidi.178.014) from the Dutch Organization for Scientific Research (NWO). MM was funded by a grant from Ministry of Science, Research and Technology of Iran. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.


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