Related Experiment Video
Updated: Aug 10, 2026
09:21
Muscle Function Obtained with Motion Mode Ultrasound and Surface Electromyography during Core Endurance Exercise
Published on: August 25, 2022
Quantifying muscle patterns and spine load during various forms of the push-up
Stephanie Freeman1, Amy Karpowicz, John Gray
1Faculty of Applied Health Sciences, Department of Kinesiology, University of Waterloo, Waterloo, Ontario, Canada.
Medicine and Science in Sports and Exercise
|March 17, 2006
Summary
Dynamic push-ups increase muscle activation and spinal load, with one-arm variations causing the highest compression. Exercise selection should consider training goals and injury history for optimal results.
Area of Science:
- Biomechanics
- Exercise Physiology
- Sports Science
Background:
- Understanding muscle activation and spinal loading during various push-up exercises is crucial for injury prevention and training optimization.
- Previous research has explored muscle engagement in push-ups, but comprehensive analysis of spinal kinetics across diverse styles is limited.
Purpose of the Study:
- To quantify abdominal and back extensor muscle activation during different push-up variations.
- To determine the impact of these exercises on spinal compression and L4-5 torque generation.
Main Methods:
- Ten healthy participants performed 12 push-up variations with surface electromyography (EMG) to record muscle activity.
- Spine kinetics were calculated using a detailed torso/spine model to assess spinal loading.
Main Results:
- Dynamic and ballistic push-ups elicited higher muscle activation and spinal loads compared to stable variations.
- Asymmetrical loading (e.g., one-arm push-ups) resulted in the highest spinal compression.
- Skilled individuals demonstrated enhanced muscle activation synchronicity during ballistic movements.
Conclusions:
- Exercise selection for push-ups should be tailored to individual training objectives and injury history.
- Variations involving dynamic or asymmetrical loading significantly increase spinal stress.
Related Concept Videos
01:15Stress: General Loading Conditions
To grasp the intricacy of real-world conditions where multiple loads are applied simultaneously to a structure, one might visualize a section passing through a specific point within a body, aligned parallel to the xy plane. This section is subjected to various forces, including original loads, normal forces, and shearing forces.
The shearing force, possessing potential directionality within the plane of the section, is simplified into two component forces running parallel to the x and y axes.
The shearing force, possessing potential directionality within the plane of the section, is simplified into two component forces running parallel to the x and y axes.
01:11Deformation of Member under Multiple Loadings
When a rod is made of different materials or has various cross-sections, it must be divided into parts that meet the necessary conditions for determining the deformation. These parts are each characterized by their internal force, cross-sectional area, length, and modulus of elasticity. These parameters are then used to compute the deformation of the entire rod.
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...
01:20Motor Unit Stimulation
When the neuron of a motor unit fires an action potential, it triggers a series of events, leading to a twitch contraction in the muscle fibers. The process of excitation-contraction coupling is crucial in relaying the action potential to the muscle fibers.
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...
01:18Residual Stresses in Bending
In the study of elastoplastic members subjected to bending moments, understanding the loading and unloading phases is crucial for assessing material behavior and structural integrity. During the loading phase, as the bending moment increases, the material initially responds elastically, adhering to Hooke's Law, where stress is directly proportional to strain. When the load exceeds the yield strength, plastic deformation occurs, resulting in permanent strain and deformation that remains even...
01:22Isotonic and Isometric Muscle Contractions
Two primary types of muscle contractions are isotonic and isometric, each serving unique functions and involving distinct mechanisms. Both isotonic and isometric contractions are integral to the body's complex system of movement and stability. Isotonic exercises contribute significantly to functional strength and movement, while isometric contractions are crucial for maintaining posture and joint stability.
Isotonic contractions
Isotonic contractions occur when a muscle changes length while the...
Isotonic contractions
Isotonic contractions occur when a muscle changes length while the...
01:20Normal Strain under Axial Loading
Normal strain under axial loading is an important concept in the field of mechanics of materials. Axial loading implies the application of a force along the axis of a material, like a column or bar. This force can either compress or stretch the material. In the context of axial loading, normal strain is the deformation experienced by the material in the direction of the loading force. It's calculated as the change in length divided by the original length of the material. This unitless ratio...