Isokinetic dynamometers provide constant velocity with accommodating resistance throughout a joint's range of motion (ROM). Establishing reliability and validity is fundamental in any instrument that measures muscle function. The purpose of this study was to assess the reliability and validity of a new isokinetic device by comparing torque values of the new device with those from a traditional device. Sixty volunteers were tested (40 men, 20 women) during 5 repetitions at 60º•sec-1 for shoulder, knee, and back flexion and extension on both the Cybex 6000 and a new isokinetic machine (iSAM 9000; INRTEK, Myrtle Beach, SC). Mean ± SD age, body mass, and height were 43.5 ± 11.0 yr, 80.5 ± 15.8 kg, 174.7 ± 9.5 cm, respectively. Participants gave written informed consent and the experimental procedures were approved by the Institutional Review Board (IRB) at Coastal Carolina University. The Pearson product moment correlation coefficient (r), was calculated to determine the validity and reliability of peak torque measured by the iSAM 9000, compared to the Cybex 6000. Independent Student t-tests were performed to determine mean peak torque differences between the two machines. Pearson r values revealed very high relationships between the two machines (set 1: r = .84-.93; set 2: r= .87-.93; p <.05), as well as very high reliability coefficients for iSAM (r = .94-.98; p < .05). Significantly higher peak torque for both sets of left and right knee flexion and extension, right shoulder extension and trunk extension was found for the iSAM 9000 compared to the Cybex 6000 (p< .05). An additional finding revealed significant bilateral differences for the knee and shoulder peak torque for all paired comparisons on the iSAM 9000 that were not found for the Cybex 6000 (p < .05). The high correlation coefficients indicate that the iSAM 9000 is a valid and reliable machine compared to the Cybex 6000. The accurate and repeatable peak torque values may be best utilized to measure isokinetic strength in the industrial setting. Applications to the athletic settings await further investigation with respect to sport specificity and injury prediction.Keyword(s): measurement/evaluation, research, worksite