Now showing items 21-31 of 31

    • Photoplethysmography-Based Ambulatory Heartbeat Monitoring Embedded into a Dedicated Bracelet 

      Arberet, Simon; Lemay, Mathieu; Renevey, Philippe; Sola, Josep; Grossenbacher, Olivier; Andries, Daniela; Sartori, Claudio; Bertschi, Mattia (2013-09-22)
      Ambulatory electrocardiogram (ECG) monitors have been intensely used since half century but are still associated to clinical/ambulatory cumbersome procedures. The question of this research is the following: what is the ...
    • Photoplethysmography-based Bracelet for Automatic Sleep Stages Classification: Preliminary Results 

      Renevey, Philippe; Celka, Patrick; Arberet, Simon; Calvo, Enric Muntané; Carós, Josep Solá i; Sartori, Claudio; Bertschi, Mattia; Lemay, Mathieu (2014)
    • Physical Activity 

      Delgado-Gonzalo, Ricard; Renevey, Philippe; Lemkaddem, Alia; Lemay, Mathieu; Solà, Josep; Korhonen, Ilkka; Bertschi, Mattia (2017)
      We begin by briefly introducing the basics of the most frequently used sensors in nowadays wearables targeting a profiling of human physical activity: inertial, biopotential, bioimpedance, and optical sensors. The backbone ...
    • Physical Activity 

      Delgado-Gonzalo, Ricard; Renevey, Philippe; Lemkaddem, Alia; Lemay, Mathieu; Solà, Josep; Korhonen, Ilkka; Bertschi, Mattia (2018)
    • Physical activity profiling: Activity-specific step counting and energy expenditure models using 3D wrist acceleration 

      Delgado-Gonzalo, Ricard; Celka, Patrick; Renevey, Philippe; Dasen, Stephan; Sola, Josep; Bertschi, Mattia; Lemay, Mathieu (2015)
      In this paper, we present the evaluation of a new physical activity profiling system embedded in a wrist-located device. We propose a step counting and an energy expenditure (EE) method, and evaluate their accuracy against ...
    • Real-time gait analysis with accelerometer-based smart shoes 

      Delgado-Gonzalo, Ricard; Hubbard, Jeremy; Renevey, Philippe; Lemkaddem, Alia; Vellinga, Quinn; Ashby, Darren; Willardson, Jared; Bertschi, Mattia (2017)
      In this paper, we present the evaluation of a new smart shoe capable of performing gait analysis in real time. The system is exclusively based on accelerometers which minimizes the power consumption. The estimated parameters ...
    • Real-time monitoring of swimming performance 

      Delgado-Gonzalo, Ricard; Lemkaddem, Alia; Renevey, Philippe; Calvo, E. Muntane; Lemay, Mathieu; Cox, Kade; Ashby, Darren; Willardson, Jared; Bertschi, Mattia (2016)
      This article presents the performance results of a novel algorithm for swimming analysis in real-time within a lowpower wrist-worn device. The estimated parameters are: lap count, stroke count, time in lap, total swimming ...
    • Reflective photo-plethysmography for the non-invasive unsupervised measurement of arterial stiffness 

      Solà, Josep; Chételat, Olivier; Bertschi, Mattia; Rimoldi, Stefano F. (2010-11-03)
    • Towards 24/7 continuous heart rate monitoring 

      Tarniceriu, Adrian; Parak, Jakub; Renevey, Philippe; Nurmi, Marko; Bertschi, Mattia; Delgado-Gonzalo, Ricard; Korhonen, Ilkka (2016)
      Heart rate (HR) and HR variability (HRV) carry rich information about physical activity, mental and physical load, physiological status, and health of an individual. When combined with activity monitoring and personalized ...
    • Tracking Blood Pressure Changes in Anesthetized Patients: the Optical Blood Pressure Monitoring (oBPM) Technology 

      Solà, Josep; Ghamri, Yassine; Proença, Martin; Braun, Fabian; Pierrel, Nicolas; Verjus, Christophe; Bertschi, Mattia; Schoettker, Patrick (2018-07-17)
    • Validation of a wrist monitor for accurate estimation of RR intervals during sleep 

      Renevey, Philippe; Sola, Josep; Theurillat, Patrick; Bertschi, Mattia; Krauss, Jens; Andries, Daniela; Sartori, Claudio (2013)
      While the incidence of sleep disorders is continuously increasing in western societies, there is a clear demand for technologies to asses sleep-related parameters in ambulatory scenarios. The present study introduces a ...