Introduction: In India, physical manual activities in asymmetrical postures overtax the human musculoskeletal system, which may exceed workers' limitations. Thus purpose of this study was to examine stresses experienced by subject, based on subjective and biomechanical loading estimates while lifting weights various heights, an asymmetric direction propose safe limit for lifting. Methods: A lab...

OBJECTIVE To estimate the differences in glenohumeral contact forces and shoulder muscle forces between able-bodied subjects and subjects with paraplegia and tetraplegia during wheelchair-related activities of daily living (ADLs). DESIGN Kinematics and external forces were measured during wheelchair ADLs (level propulsion, weight-relief lifting, reaching) and processed by using an inverse dyn...

In a sample of 32 older adults (ages 60 to 84 years), subjects were randomized to one of two conditions; 10 weeks of supervised weight-lifting exercise followed by 10 weeks of unsupervised exercise; or attending lectures for 10 weeks (Singh et al., 2001). The patients all had major or minor depression and the researchers did not contact any study participant until the end of the research period...

Weight of the load and its characteristics is considered to be the important risk factor for low back disorders (LBD) among manual materials handlers. Determining weight of the load and the amount of load a person can lift is important in minimizing the incidence of LBD. Among various methods like isometric, isoinertial and isokinetic, isoinertial approach of lifting evaluation is best as it is...

OBJECTIVE To determine trunk muscle activity when lifting an object of greater weight than expected, which may contribute to the development of low back pain. DESIGN Electromyographic evaluation of trunk muscle activity. SETTING University of Tsukuba, Spine laboratory. PARTICIPANTS Eleven healthy men with a mean age of 24 (SD 2) years. INTERVENTIONS Trunk muscle activity was measured wh...

When lifting an object, individuals scale lifting forces based on long-term priors relating external object properties (such as material and size) to object weight. When experiencing objects that are poorly predicted by priors, people rapidly form and update sensorimotor memories that can be used to predict an object's atypical size-weight relation in support of predictively scaling lift forces...

CONTEXT Clinical guidelines for breast cancer survivors without lymphedema advise against upper body exercise, preventing them from obtaining established health benefits of weight lifting. OBJECTIVE To evaluate lymphedema onset after a 1-year weight lifting intervention vs no exercise (control) among survivors at risk for breast cancer-related lymphedema (BCRL). DESIGN, SETTING, AND PARTICI...

The current study evaluated if high rep, low rep, or no weight training at all would be best suited for decreasing 2,000-m rowing ergometer times in male varsity rowers. Subjects (n = 18) were rowers from Grand Valley State University who were randomly and equally assigned to 1 of 3 groups: control (CON), high-load low repetitions (HLLR), and low-load high repetitions (LLHR). The weight trainin...