Publication statistics
Pub. period:1992-1995
Pub. count:5
Number of co-authors:7
Co-authors
Number of publications with 3 favourite co-authors:
Valerie J. Rice:3Bradley C. Nindl:3William J. Tharion:2 Productive colleagues
Marilyn A. Sharp's 3 most productive colleagues in number of publications:
Valerie J. Rice:8Bradley C. Nindl:3William J. Tharion:2
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Marilyn A. Sharp
Publications by Marilyn A. Sharp (bibliography)
Sharp, Marilyn A., Rice, Valerie J., Nindl, Bradley C. and Mello, Robert P. (1995): Maximum Acceptable Load for Lifting and Carrying in Two-Person Teams. In: Proceedings of the Human Factors and Ergonomics Society 39th Annual Meeting 1995. pp. 640-644.
“The purpose of this study was to determine and verify the maximum acceptable load for lifting and carrying (MAL-L&C) in single- and mixed-gender two-person teams. Participants lifted and carried a box 7.2 meters and placed it on a 132 cm high shelf, at rates of 1 x/min and 4 x/min. All male teams lifted and carried significantly (p<.05) more weight than all female teams or mixed-gender teams, and mixed-gender teams carried more than all female teams (p>.05). Our findings demonstrate that 1) individuals working alone or in teams can accurately estimate their ability to lift and carry loads for an hour, and that 2) when working in pairs, team MAL-L&C are approximately equal to the sum of their individual MAL-L&C. Percentile norms for MAL-L&CS are provided for male, female, and mixed gender teams.”
© All rights reserved Sharp et al. and/or Human Factors Society
Rice, Valerie J., Sharp, Marilyn A., Nindl, Bradley C. and Bills, Randall K. (1995): Prediction of Two-Person Team Lifting Capacity. In: Proceedings of the Human Factors and Ergonomics Society 39th Annual Meeting 1995. pp. 645-649.
“Predictive models for team lifting capacity are important for task and equipment design, as well as worker selection and placement. The purpose of this study was to develop a prediction equation for single gender and mixed gender two-person team lifting from the floor to knuckle height. Men (n=23) and women (n=17) were combined into teams of two men (n=26), two women (n=24), and one man with one woman (n=25). Independent variables included incremental dynamic lift, 38 cm upright pull, dead lift, fat free mass, and body mass. A least squares linear regression was used. In addition, an equation was developed from deadlift strengths only. The lightest individual deadlift and the sum of the individual deadlifts were the best predictors of team lifting capacity (R{squared} = 0.90, SEE = 16). The results indicate that two-person team lifts to knuckle height are determined by the weaker team member.”
© All rights reserved Rice et al. and/or Human Factors Society
Rice, Valerie J. B., Tharion, William J. and Sharp, Marilyn A. (1994): The Effects of a Stretcher-Carry Harness on Soldier Performance: Carrying from a Remote Area. In: Proceedings of the Human Factors and Ergonomics Society 38th Annual Meeting 1994. pp. 568-572.
“This study investigated whether the use of a shoulder harness and team size would affect stretcher-carry performance and post-carry rifle marksmanship and fine-motor coordination following a carry from a remote site. Soldiers (12 male and 11 female) carried stretchers in two-and four-person teams, with and without a shoulder harness. Soldiers carried a stretcher at 4.8 km/hr for as long as possible, up to 30 min. Soldiers fired at targets and completed a fine-motor coordination task before and after each carry. Analysis of Variance and post-hoc Newman-Keuls Comparison of Means revealed significant rifle shooting impairments after stretcher-carrying (p < 0.001). Men carried the stretcher longer than women (p < 0.0001). Harness use and carrying in four-person teams prolonged carry time for both men and women, without decreasing shooting accuracy. Completion of a fine-motor coordination task was faster after using a harness vs a hand carry (p = 0.03) and working in four vs two-person teams (p < 0.02). Heart rate was lower during harness carries (p < 0.001). In conclusion, the ability to transport, medically treat, and protect patients is improved by harness use and working in four-person teams. It is suggested the policy of using four-person teams be enforced, and harness systems be included with the supply of stretchers for any situation that requires continuous stretcher-carrying of five minutes for four-person teams or two minutes for two-person teams.”
© All rights reserved Rice et al. and/or Human Factors Society
Rice, Valerie J. B., Tharion, William J. and Sharp, Marilyn A. (1994): The Effects of a Stretcher-Carry Harness on Soldier Performance: A Mass Casualty Simulation. In: Proceedings of the Human Factors and Ergonomics Society 38th Annual Meeting 1994. pp. 573-577.
“This study investigated whether the use of a shoulder harness and team size would affect stretcher-carry performance, post-carry rifle marksmanship, and post-carry fine-motor coordination during a mass casualty simulation. Twelve male and eleven female soldiers volunteered. Soldiers carried stretchers in two- and four-person teams, with and without a shoulder harness in a 15-minute bout of rapid, short stretcher-carries and lifts. Soldiers completed as many carries as possible within the allowed period. Soldiers completed a marksmanship and fine-motor coordination task before and after each 15-minute period. Analysis of Variance and post hoc Newman-Keuls Comparison of Means revealed significant rifle shooting impairments after stretcher-carrying (p < 0.02). Men completed more carries than women (p < 0.0001), and more four-person hand carries were completed than other team size x harness combinations (p < 0.01). Women's rifle marksmanship was better when carrying in four-person teams (p < 0.05), while men's rifle marksmanship performance was not significantly altered. The fine-motor coordination task was completed faster after using a harness (p = 0.03) and working in four-person teams (p < 0.02). The ability to transport, medically treat, and protect patients is improved by working in four-person teams. In conclusion, for a mass casualty scenario, tactical planning should allow for enough soldiers to be deployed to allow stretcher-carrying in four-person teams. A harness system should be available for exigencies requiring two-person teams.”
© All rights reserved Rice et al. and/or Human Factors Society
Rice, Valerie J., Sharp, Marilyn A., Williamson, Tania L. and Nindl, Bradley C. (1992): Effects of Gender, Lift Height, Direction, and Load on the Ability to Estimate Weight. In: Proceedings of the Human Factors Society 36th Annual Meeting 1992. pp. 669-673.
“The study evaluated the effects of gender, lift height, direction (lift/lower), and load on the ability to correctly estimate weight handled. Seven women and six men lifted and lowered boxes to and from knuckle, waist, and shoulder heights. Subjects were asked to estimate weights corresponding to 50, 40, 30, and 20% of gender specific lifting strength to 152 cm. The difference between the actual and estimated weight (DIFF) was 100% greater for men than for women (F = 6.27, p = 0.03). When the percent difference was analyzed, there was no significant gender effect. The least accurate estimates occurred when lowering a weight from knuckle height (p < 0.05). The majority of subjects underestimated the weight and men underestimated more frequently than women (Chi{squared} = 12.57, p = 0.0004). Subjects over-estimated the weight more often at higher weights. The results suggest that both men and women tend to underestimate weight, especially when lowering from knuckle height, possibly putting them at risk for injury.”
© All rights reserved Rice et al. and/or Human Factors Society
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