Related Experiment Video
Updated: May 28, 2026
10:19
3D Kinematic Gait Analysis for Preclinical Studies in Rodents
Published on: August 3, 2019
Bird terrestrial locomotion as revealed by 3D kinematics
Anick Abourachid1, Remi Hackert, Marc Herbin
1Département EGB, Muséum National d'Histoire Naturelle, Pavillon d'Anatomie Comparée, Paris Cedex, France. abourach@mnhn.fr
Zoology (Jena, Germany)
|October 11, 2011
Summary
Quail locomotion reveals the trunk
Area of Science:
- Biomechanics
- Animal locomotion
- Avian biology
Background:
- Birds utilize diverse locomotion modes, primarily flight (wings/tail) and terrestrial walking (legs).
- The functional role of other body segments, particularly the trunk, during avian terrestrial locomotion is poorly understood.
- The quail (Coturnix coturnix) trunk constitutes ~70% of body mass, yet its locomotory contribution is understudied.
Purpose of the Study:
- To investigate the kinematics of the head, trunk, and legs during terrestrial locomotion in quails.
- To elucidate the specific role of the trunk in avian walking gait.
Main Methods:
- High-speed video fluoroscopic recordings of quails walking on a trackway.
- 3D reconstruction of skeletal element motion from synchronized dorso-ventral and lateral views.
- Kinematic analysis of body part trajectories and coordination.
Main Results:
- The trunk plays a significant role in quail terrestrial locomotion.
- Two key kinematic subsystems identified: (i) integrated 3D trunk/thigh motion for center of mass path adjustment, and (ii) distal limb motion for propulsion.
- Head bobbing is synchronized with trunk movements; thigh muscles likely contribute to trunk's 3D motion.
Conclusions:
- The trunk is a crucial component of avian terrestrial locomotion, not merely passive mass.
- Specific kinematic mechanisms involving the trunk, thighs, and distal limbs facilitate efficient walking.
- Further research into thigh muscle function and pelvic anatomy is warranted.
More Related Videos
Related Concept Videos
01:24Absolute Motion Analysis- General Plane Motion
Visualize a drone, with its propellers spinning rapidly, hovering mid-air. The fascinating movements and operations of this drone can be comprehended by applying the principle of general plane motion.
As the drone's propellers rotate, an upward force is generated that counteracts the force of gravity, enabling the drone to lift off from the ground. This initial movement of the drone is along a straight path, representing a form of translational motion. In this phase, every point on the drone...
As the drone's propellers rotate, an upward force is generated that counteracts the force of gravity, enabling the drone to lift off from the ground. This initial movement of the drone is along a straight path, representing a form of translational motion. In this phase, every point on the drone...
01:18Kinematic Equations - III
The first two kinematic equations have time as a variable, but the third kinematic equation is independent of time. This equation expresses final velocity as a function of the acceleration and distance over which it acts. The fourth kinematic equation does not have an acceleration term and provides the final position of the object at time t in terms of the initial and final velocities. This equation is useful when the value of the constant acceleration is unknown.
Using the kinematic equations,...
Using the kinematic equations,...
01:17Kinematic Equations - II
The second kinematic equation expresses the final position of an object in terms of its initial position, the distance traveled with the initial constant velocity, and the distance traveled due to a change in velocity. Similar to the first kinematic equation, this equation is also only valid when the acceleration is constant throughout the motion of an object.
Suppose a car merges into freeway traffic on a 200 m long ramp. If its initial velocity is 10 m/s and it accelerates at 2 m/s2, then the...
Suppose a car merges into freeway traffic on a 200 m long ramp. If its initial velocity is 10 m/s and it accelerates at 2 m/s2, then the...
01:26Kinematic Equations - I
When an object moves with constant acceleration, the velocity of the object changes at a constant rate throughout the motion. The kinematic equations of motions are derived for such cases where the acceleration of the object is constant. The first kinematic equation gives an insight into the relationship between velocity, acceleration, and time. We can see, for example:
01:22Planar Rigid-Body Motion
Understanding the movement of a rigid body in planar motion involves recognizing that every particle within this body is traversing a path that maintains a consistent distance from a specific plane. This concept is fundamental in the study of physics and mechanical engineering, and it allows us to comprehend better how objects move in space.
Planar motion is typically divided into three distinct categories. The first is rectilinear translation, demonstrated by a subway train that moves along...
Planar motion is typically divided into three distinct categories. The first is rectilinear translation, demonstrated by a subway train that moves along...