Electromyographicassessment of daily quadriceps activity in young subjects and elderly osteoarthritic subjects

Bussman, 1994, Functional requirements for an activity monitor Laporte, 1985, Assessment of physical activity in epidemiological research: problems and prospects, Public Health Reports, 100, 131 Meijer, 1991, Methods to assess physical activity with special reference to motion sensors and accelerometers, IEEE Transactions on Biomedical Engineering, 38, 221, 10.1109/10.133202 Montoye, 1984, Measurement of physical activity in population studies: a review, Human Biology, 56, 195 Howe, 1994, Evaluation of muscle performance measures used to assess electrotherapeutic rehabilitation of the quadriceps Oldham, 1994, Comparison of two sampling frequencies used in the electromyographic assessment of quadriceps activity of long duration: a single case study