The influences of two benzodiazepines (triazolam 0.25 mg and flunitraz
epam 2 mg) on isokinetic and isometric muscle performance and on cardi
ovascular parameters were examined after a standard period of sleep. A
randomized and double-blind test procedure was used (n = 15). Triazol
am had no significant (p < 0.05) influence on either of the test condi
tions. Administration of flunitrazepam significantly lowered values fo
r maximal isometric force and for the cardiovascular parameters. It wa
s concluded that triazolam does not influence performance. On the othe
r hand, flunitrazepam does influence a number of strength characterist
ics and cardiovascular parameters in effort situations.