Article

The purpose of this study was to compare isometric strength of elbow extensors
measured in supine- and prone-lying positions at elbow flexion angles of 45 and
90 degrees. Twenty-two male subjects under single-blind procedures participated
in the study. Each subject participated in both supine-lying and prone-lying
measuring protocols.
Calibrated cable tensiometer was used to measure isometric
strength of the right elbow extensors and a biofeedback electromyography was used
to assure no substitution movements from shoulder girdle muscles. The mean values
of isometric strength of elbow extensors measured from supine-lying position at
elbow flexion angles of 45 and 90 degrees were 11.1 +/- 4.2 kg and 13.1 +/- 4.6
kg, while those measured from prone-lying position were 9.9 +/- 3.6 kg and 12 +/-
4.2 kg, respectively. There is statistical significant difference between the
isometric strength of elbow extensors measured from supine-lying position at
elbow flexion angles of 45 and 90 degrees compared to that measured from
prone-lying position (p < 0.05). The results suggest that in manual muscle
testing starting position can affect the isometric strength of elbow extensors
since supine-lying starting position is better than prone-lying starting position.

Langue : ANGLAIS