Biomechanics involves the biological human beings interacting with his/her mechanical environment. Biomechanics research is being done in connection with sport, physical education, and general motor behavior, and concerns mechanics independent of implements. Biomechanics research falls in the following two general categories: (1) that specific research which contributes to the body of knowledge of motor behavior based on biomechanical type problems, and (2) the service components biomechanics provides to other subdisciplines for delineation of movement. The methods and general instrumentation techniques utilized in biomechanics research include (1) cinematography or high speed film (to record and analyze movement); (2) electronic transducers (to convert mechanical displacement, velocity, or acceleration into electrical voltage); (3) electrogoniometers (used to measure joint displacement); (4) anthropometry (technique of measuring length, girths, and widths of various part of the human body); and (5) electromyography (EMG) technique of investigating electrical activity associated with muscular contraction). (BD)