Supplementary material from "The impact of pelvic lateral rotation on hindlimb kinematics and stride length in the red-legged running frog, Kassina maculata"

  • Amber Collings (Contributor)
  • Laura Beatriz Porro (Creator)
  • Cameron Hill (Creator)
  • Christopher T. Richards (Creator)

Dataset

Description

Some frog species, such as Kassina maculata (red-legged running frog), use an asynchronous walking/running gait as their primary locomotor mode. Prior comparative anatomy work has suggested that lateral rotation of the pelvis improves walking performance by increasing hindlimb stride length; however, this hypothesis has never been tested. Using non-invasive methods, experimental high-speed video data collected from eight animals were used to create two three-dimensional kinematic models. These models, each fixed to alternative local anatomical reference frames, were used to investigate the hypothesis that lateral rotation of the mobile ilio-sacral joint in the anuran pelvis plays a propulsive role in walking locomotion by increasing hindlimb stride length. All frogs used a walking gait (duty factor greater than 0.5) despite travelling over a range of speeds (0.04–0.23 m s−1). The hindlimb joint motions throughout a single stride were temporally synchronized with lateral rotation of the pelvis. The pelvis itself, on average, underwent an angular excursion of 12.71° (±4.39°) with respect to the body midline during lateral rotation. However, comparison between our two kinematic models demonstrated that lateral rotation of the pelvis only increases the cranio-caudal excursion of the hindlimb modestly. Thus, we propose that pelvic lateral rotation is not a stride length augmenting mechanism in K. maculata.
Date made available1 May 2019
Publisherfigshare

Research Output

The impact of pelvic lateral rotation on hindlimb kinematics and stride-length in the red-legged running frog, Kassina maculata

Collings, A., Porro, L., Hill, C. & Richards, C. T., 8 May 2019, In : Royal Society Open Science. 6, 5, 190060.

Research output: Contribution to journalArticle

Open Access
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    Cite this

    Collings, A. J. (Contributor), Porro, L. B. (Creator), Hill, C. (Creator), Richards, C. T. (Creator) (1 May 2019). Supplementary material from "The impact of pelvic lateral rotation on hindlimb kinematics and stride length in the red-legged running frog, Kassina maculata". figshare. 10.6084/m9.figshare.c.4491278.v2