Ph.D. Howard G. Knuttgen
Dept. of Physical Med. & Rehab. Harvard Medical School Spaulding Rehabilitation Hospital, Charlestown, MA, U.S.A.

Keywords: muscle activity, performance, concept.

Introduction. Due to the standardization of reporting procedures for various types of research and increased requirements for the preparation of scientific manuscripts, it is vital that researchers agree on standard technologies. Errors in the use of appropriate terminology and the use of incorrect measurements can adversely affect effective communication. The need for standard terminology is also evident in clinical settings where different specialists need to communicate and discuss rehabilitation interventions.
The purpose of the study is to substantiate the conceptual apparatus associated with muscle activity.
The results of the study and their discussion. The concept of " work "should not be used as an alternative to the concept of" exercise", because in the international system, work is defined directly as the product of force and movement, and not of ongoing muscle activity. The term " work load "should not be used when units of measurement are intended to define" power "(watts).
Conclusion. Strict adherence to the definitions of the international system will ensure the standardization of terminology and make scientific communication more understandable for the world scientific community.

References

1. Knuttgen H.G., Patton J.F., Vogel J.A. An ergometer for concentric and eccentric muscular exercise. // J Appl Physiol. – 1982. – V.53. – P. 784-788

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