Physical Movement of the Knee Joint
Da Shi Stance

Practicing Meihua Quan Kung Fu can benefit your body not only physically but mentally as well. Every person is different.

“Ergophysiological and Physical Mechanics of Da Shi stance of Meihua Quan”  by Dr. Vasileios Ag. Drougas BSc. MSc. PhD. PhD (Phil)

Scientific Positions: 

Post Doctorate Researcher in the Applied Ergophysiology Laboratory, School of the Medicine University of Ioannina Greece. 

Associated Researcher Laboratory of Knowledge & Intelligent Computing (KIC-LAB) Department of Computer Engineering T.E.I. of Epirus,

Director & Researcher of Movement for Life Research Lab (MLRLab) Greece

Professor in the Department of Computer Engineering T.E.I. of Epirus

Research purpose

The purpose of the research is to present the ergophysiological parameters and the forces applied at the stance Da Shi of the ancient style of Chinese Kung Fu Meihua Quan and promote rehabilitation results to many different parts of the upper human body.

forces & da shi stance

The Forces existed in the Human Body during the practice of the stance of Meihua Quan Da Shi (stance for Lungs and Large Intestine) are:

Where the forces are

(W) Is the Body Weight
(Wf) The front force from the Weight
(Wb) The back force from the Weight
(Fup) The force from the backhand
SF (Fup, Wb) the new Force between Fup, Wb
(Nb) The back force from the ground
(Nf) The front force from the ground
(F1) The Front Hand Force to the looking direction
(Φ) The Degrees between the Ηorizontal and Parallel Direction (PR)

Da Shi Stance

Physical Movement for the

knee joint

The soles are in the same straight line when standing and supporting, so both knee joints and the two knee joints are in the same vertical plane parallel to the body level when it is fully extended.

Forces & Joints

Parallel placement of the pads ensures that the forces can be transferred to the same vertical plane without creating torque on the knee joints and the pelvis and ankle joints.

It reduces the likelihood of joint damage to the joints and, in any case, reduces the possibility of meniscal injury due to knee motion in its natural form. The physical movement of the knee extension and retraction is the one that coincides with the movement of the two members associated with the knee joint, namely the femur and the tibia, at the same level without torsion.


Suppose one of the two forces has its carrier at a different level. In that case, torsion is created, and torque that is transferred to the joint can create a dependent lesion and the weight, i.e., force, to be applied to the joint at the points of contact of the forces. More weight entails a higher torque than higher tension to the joint. Similar results also occur with increasing torque.

These results do not follow linear behavior but depend on each organism differently and on the ability of the individual to adapt to combined movements. (Drougas B.: Study of the Competence for the Human Adaptability of Human Body through Combined Movements, 10th International Congress of Physical Education and Sports, Komotini 17 – 19 May 2002.)

Bill Drougas Da Shi Stance


We would like to thank Dr. Bill Drougas, 18th Disciple of Meihua Quan, for the research of the first stance of Meihua Quan, Da Shi. In the following posts, we will publish the entire research. 

Shifu Du Weijun (monastic name Shi Yanjun)

Executive President of IMHQF