The purpose of this investigation was to determine the effects of 7 weeks of concurrent strength and endurance training on the triceps brachii. Fifteen fit subjects were randomly allocated to endurance (TE), strength (TS), or concurrent (TC) training groups. Endurance training involved five 5-min bouts of incremental arm cranking at between 40 and 100% of peak arm ergometer oxygen consumption (PJOURNAL/jscr/04.02/00124278-199311000-00008/ENTITY_OV0312/v/2017-07-20T235140Z/r/image-pngO2). Strength training involved two 30-s sets of maximal isokinetic contractions at 4.16 rad · sec−1. The TC group completed both strength and endurance training. PJOURNAL/jscr/04.02/00124278-199311000-00008/ENTITY_OV0312/v/2017-07-20T235140Z/r/image-pngO2 and strength assessments were conducted prior to and following 2, 5, and 7 weeks of training. Isokinetic strength (T30) was determined 0.52 rad (30°) from full extension for 10 angular velocities between 0.52 and 5.20 rad · sec−1. Two weeks of training significantly increased T30 at all contractile speeds for the TS, TE, and TC conditions. T30 was further increased at all contractile speeds at Weeks 5 and 7 for the TE and TC groups, respectively. Seven weeks of training significantly increased PJOURNAL/jscr/04.02/00124278-199311000-00008/ENTITY_OV0312/v/2017-07-20T235140Z/r/image-pngO2 in the TE and TC conditions, but not in the TS group.