The Biomechanical Model for Minimum Movement Time during Running Walking and Road Cycling 07: The Joint Torque Principle

The sixth fundamental Biomechanical principle included in this model is the Joint Torque Principle.  This principle states that an increase in joint torque (TJ) is caused by an increase in a muscle force (FM) pulling on the bones that are held together at the joint and/or an increase in the moment arm (dMA) (i.e., the linear distance from the joint’s axis of rotation to the line of pull of the muscle force).  The line of pull of the muscle force is determined by connecting a line between the attachments (origin and insertion) of the muscle.

The equation for the Joint Torque Principle is given here.

A graphical representation the Joint Torque Principle is presented here.

Click on "read more" to view my description of the Real-World application of the Joint Torque Principle to real-world running.

The Biomechanical Model to Achieve Maximum Jump Height or Maximum Horizontal Distance 02

Hi all,

It's summer break for me.  Hurray!!  I will be posting regular updates to the blog from now until the end of August.  Thanks for your patience.  Here we go!

The Sum of Joint Linear Speeds Principle is the second fundamental Biomechanical principle included in the Biomechanical Model to Achieve Maximum Jump Height or Maximum Horizontal Distance.  This principle states that the jumper’s linear speed is the result of an optimal combination of individual joint linear speeds. The identification of this optimal combination of joint linear speeds is a skill that all individuals interested in understanding human movement must develop.

Click on "read more" to view my description of the Real-World Application of the Sum of Joint Linear Speeds principle to the Biomechanical Model to Achieve Maximum Jump Height or Maximum Horizontal Distance and to see a graphical representation the Sum of Joint Linear Speeds Principle.