automotive ergonomics brian peacock pdf download

Hip circumference is an effective predictor for EITW values with percentages of explained variances of 64.1% for male and 61.2% for female. The results show that sex difference in EITW measurements was observed (male:12.0 cm female:13.6 cm). The models were then validated by the data from another 8 men and 8 women. In this study, the EITW values, as well as the anthropometric data, were obtained from 30 men and 30 women to develop the EITW prediction models separately for the men and the women by multiple stepwise regression analysis. Previous studies have investigated the measurement of the external ischial tuberosity width (EITW) for bicycle seat design. The factors of the lumbar support, the side supports, the firmer seat at the ischial tuberosity region, the adjustable head rest and the rubber mat all contributed to a reduction in low back load. It is suggested that the low back load of the new seat was less than the standard seat. At the third examination, the kinetic pain score in bending backward and the Lasegue test significantly improved for the new seat (vs. At the second examination, the subjective evaluation significantly improved for the new seat (vs. Before, and 3 and 6 months after the start of the study, the low back load was estimated by lumbar examination and subjective evaluation of low back pain. For 6 months, 30 used the new seat, and the other 30 used the standard seat. The existing seat in their personal vehicles was replaced with the new seat for 30 subjects. Sixty male subjects, who commuted 5 times/week for about 50 min/trip with the standard seat and complained of low back pain in driving, were selected from a group of 1600 subjects. the standard seat: (1) a lumbar support, (2) side supports, (3) seat is firmer at the ischial tuberosity region, but it is softer at the femoral region, (4) a head rest which is adjustable sagittally, and (5) a rubber mat under the seat. The new seat has the following characteristics vs. The purpose of this study is to compare the low back load in a long-term driving experiment between two different types of driver seats (the new seat and the standard seat). Therefore it is important to design a car driver seat with less load to reduce low back pain. Low back pain is a significant health problem for professional drivers.

Automotive ergonomics brian peacock pdf download