Browsing by Author "Vaz, M."
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- Caracterização cinética e cinemática da marcha de indivíduos adultos obesosPublication . Sousa, Helena; Santos, Rubim; Vilas Boas, João; Vaz, M.; Abreu, Sofia; Castro, Marcelo PeduzziO presente estudo apresenta a caracterização cinemática e cinética da marcha de indivíduos obesos. Envolveu instrumentos como Pedar-Novel, para recolha de dados da pressão plantar; Plataforma Bertec 4060-10, para dados de Força de Reacção ao Solo (FRS), Câmaras digitais Sony, 50Hz para ângulos do pé; IPAQ para dados de actividade física. Foram seleccionados individuos com IMC≥30Kg/m2, para o grupo experimental e com IMC≤ 30Kg/m2 para o grupo controlo. Os resultados mostraram pelos valores de FRS e respectivos tempos de ocorrência que indivíduos obesos, quando comparados com indivíduos eutróficos, exercem forças superiores ocasionando uma sobrecarga mecânica ao nível do sistema músculo-esquelético.
- Methods of posture analysis for computer workersPublication . Maheronnaghsh, Sara; Santos, Joana; Vaz, M.Musculoskeletal disorders (MSDs) have been identified as a predisposing factor for lesser productivity and are considered to be a major occupational health problem contributing significantly to absenteeism, disability and loss of productivity. Computer users may develop musculoskeletal disorders due to the forces applied, muscle use, posture and wrist velocity and acceleration exposures during computer use. Work-related musculoskeletal disorders (WMSDs) in computer users cause substantial worker discomfort, disability and loss of productivity. The aim of this study is to review systematically the relevant literature on applicable posture analysis methods to computer workers. A bibliographic survey based on PRISMA statement methodology was performed. A review on different approaches for computer workers posture was accomplished and noted that the simultaneous utilization of the different methods allows achieving better posture analysis, compared to situations when each one of them was used individually.
- The Influence of Active Workstations on Work Performance, Productivity Indicators and Sedentary Time: A Systematic ReviewPublication . Ramos, Sofia; Maheronnaghsh, Sara; Vila-Chã, Carolina; Vaz, M.; Santos, JoanaThe most of strategies to promote physical activity in workplaces interfere with work tasks and many organizations declined these programs. The aim of this review is to understand the impact of the active workstations on the performance and productivity indicators, and also on the reduction of the sedentary time. This review applied PRISMA methodology. 389 studies were identified by searching the different databases and 12 studies were selected, fulfilling the screening and eligibility criteria. The implementation of active workstations did not have a significant impact in terms of performance and productivity. However, some of indicators revealed some positive changes, namely at sit-standing, walking and cycling conditions. All active interventions had positive effects on the reduction of sedentary work time. However, it is essential that active interventions have promising effects for employers accept the challenge.