An evaluation of the effect of a training program on worker lifting postures

Though worker training is often chosen as a means to reduce the risk of low back pain if involved in lifting activities, the effect on a worker's lifting posture is rarely reported. This paper describes a video analysis method of recording lifting postures and the results of one evaluation of a training program specifically designed to modify lifting postures. It is concluded that a four-hour training program had beneficial but minor effects on the lifting techniques used by healthy workers in a warehouse when handling relatively light to moderate loads (i.e., 85% of loads lifted were below 30 pounds).Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/25948/1/0000014.pd

It\u27s My Body and None of Your Business: Developmental Changes in Adolescents\u27 Perceptions of Rights Concerning Health

We examined developmental changes in adolescents\u27 perceptions of an individual\u27s right to engage in risky behaviors that could pose harm to health. The views of 563 early, 506 middle, and 467 late adolescents concerning the degree to which individuals have a right to engage in smoking, drinking, and drug use (private health beliefs) or whether the government has a right to impose constraints on individuals (public health beliefs) were surveyed over 3 years. Endorsements of individual rights increased between early and middle adolescence and remained stable into late adolescence. Endorsements of public health beliefs showed a curvilinear trend with middle adolescents less likely than early or late adolescents to endorse the government\u27s right to constrain individual choices. Regardless of age, endorsements of public health were positively and individual rights were negatively related to an adolescent\u27s belief that s/he had a right to intervene in a friend\u27s risky choices

Large Time Behavior of the Navier-Stokes Flow

International audienceDifferent results related to the asymptotic behavior of incompressible fluid equations are analyzed as time tends to infinity. The main focus is on the solutions to the Navier-Stokes equations, but in the final section a brief discussion is added on solutions to Magneto-Hydrodynamics, Liquid crystals, Quasi-Geostrophic and Boussinesq equations. Consideration is given to results on decay, asymptotic profiles, and stability for finite and nonfinite energy solutions