Research experience

    • Jan 2012
      Research: University of Texas Health Science Center at Houston
      University of Texas Health Science Center at Houston · Division of Health Promotion and Behavioral Sciences
      Houston · USA
    • Jan 1990–
      Dec 2012
      Research: University of California, San Francisco
      University of California, San Francisco · Division of Occupational and Environmental Medicine, Division of Hospital Medicine, Division of Biomaterials and Bioengineering, School of Nursing
      San Francisco · USA
    • Jan 2011
      Research: Battelle Memorial Institute
      Battelle Memorial Institute
      Columbus · USA
    • Jan 1991–
      Dec 2011
      Research: University of California, Berkeley
      University of California, Berkeley · Department of Environmental Health Sciences, Department of Bioengineering1, School of Public Health, Department of Mechanical Engineering
      Berkeley · USA
    • Jan 2009
      Research: San Francisco VA Medical Center
      San Francisco VA Medical Center
      San Francisco · USA
    • Jan 2006–
      Dec 2009
      Research: University of California, Los Angeles
      University of California, Los Angeles · Department of Epidemiology, School of Public Health
      Los Angeles · USA
    • Jan 2001–
      Dec 2008
      Research: CSU Mentor
      CSU Mentor · Department of Medicine
      Long Beach · USA
    • Jan 2007
      Research: University of Southern California
      University of Southern California · Department of Medicine
      Los Angeles · USA
    • Jan 2007
      Research: McMaster University
      McMaster University · Department of Kinesiology
      Hamilton · Canada
    • Jan 1994–
      Dec 2007
      Research: University of Richmond
      University of Richmond
      Richmond · USA
    • Jan 2006
      Research: University of Houston
      University of Houston
      Houston · USA
    • Jan 2004
      Research: Marquette University
      Marquette University · Department of Biomedical Engineering
      Milwaukee · USA
    • Jan 2002
      Research: Kodak
      Kodak
      Rochester · USA
    • Jan 2000–
      Dec 2002
      Research: Sahlgrenska University Hospital
      Sahlgrenska University Hospital
      Göteborg · Sweden
    • Jan 2000
      Research: Lund University
      Lund University · Department of Occupational and Environmental Medicine
      Lund · Sweden
    • Jan 1994–
      Dec 1997
      Research: University of Michigan
      University of Michigan · Center for Ergonomics
      Ann Arbor · USA
    • Jan 1989
      Research: California Department of Health Care Services
      California Department of Health Care Services
      Sacramento · USA
  • Aug 1990–
    present
    Research: UC Berkeley Ergonomics Graduate Program
    University of California at Berkeley · Department of Bioengineering · Ergonomics Laboratory
    USA · Berkeley
  • Jul 1990–
    present
    Teaching: UC San Francisco, Division of Occupational and Environmental Medicine
    University of California at San Francisco · Department of Medicine · Division of Occupational and Environmental Medicine
    USA · San Francisco

Education

  • Aug 1980–
    May 1981
    University of California at Berkeley
    Public Health and Epidemiology · MPH
    USA · Berkeley
  • Jul 1977–
    Apr 1982
    University of California San Francoso
    Medicine · MD
    USA · San Francisco

Publications (137) View all

  • Article: Booster Breaks in the workplace: participants' perspectives on health-promoting work breaks.
    [show abstract] [hide abstract]
    ABSTRACT: Increasing sedentary work has been associated with greater cardiovascular and metabolic risk, as well as premature mortality. Interrupting the sedentary workday with health-promoting work breaks can counter these negative health effects. To examine the potential sustainability of work-break programs, we assessed the acceptance of these breaks among participants in a Booster Break program. We analyzed qualitative responses from 35 participants across five worksites where one 15-min physical activity break was taken each workday. Two worksites completed a 1-year intervention and three worksites completed a 6-month intervention. Responses to two open-ended questions about the acceptance and feasibility of Booster Breaks were obtained from a survey administered after the intervention. Three themes for benefits and two themes for barriers were identified. The benefit themes were (i) reduced stress and promoted enjoyment, (ii) increased health awareness and facilitated behavior change, and (iii) enhanced workplace social interaction. The barrier themes were the need for (iv) greater variety in Booster Break routines and (v) greater management support. This study provides empirical support for the acceptance and feasibility of Booster Breaks during the workday. Emphasizing the benefits and minimizing the barriers are strategies that can be used to implement Booster Breaks in other workplaces.
    Health Education Research 03/2013; · 1.66 Impact Factor
  • Article: Personal and workplace psychosocial risk factors for carpal tunnel syndrome: a pooled study cohort.
    [show abstract] [hide abstract]
    ABSTRACT: BACKGROUND: Between 2001 and 2010, six research groups conducted coordinated multiyear, prospective studies of carpal tunnel syndrome (CTS) incidence in US workers from various industries and collected detailed subject-level exposure information with follow-up symptom, physical examination, electrophysiological measures and job changes. OBJECTIVE: This analysis of the pooled cohort examined the incidence of dominant-hand CTS in relation to demographic characteristics and estimated associations with occupational psychosocial factors and years worked, adjusting for confounding by personal risk factors. METHODS: 3515 participants, without baseline CTS, were followed-up to 7 years. Case criteria included symptoms and an electrodiagnostic study consistent with CTS. Adjusted HRs were estimated in Cox proportional hazard models. Workplace biomechanical factors were collected but not evaluated in this analysis. RESULTS: Women were at elevated risk for CTS (HR=1.30; 95% CI 0.98 to 1.72), and the incidence of CTS increased linearly with both age and body mass index (BMI) over most of the observed range. High job strain increased risk (HR=1.86; 95% CI 1.11 to 3.14), and social support was protective (HR=0.54; 95% CI 0.31 to 0.95). There was an inverse relationship with years worked among recent hires with the highest incidence in the first 3.5 years of work (HR=3.08; 95% CI 1.55 to 6.12). CONCLUSIONS: Personal factors associated with an increased risk of developing CTS were BMI, age and being a woman. Workplace risk factors were high job strain, while social support was protective. The inverse relationship between CTS incidence and years worked among recent hires suggests the presence of a healthy worker survivor effect in the cohort.
    Occupational and environmental medicine 05/2013; · 3.64 Impact Factor
  • Article: Prevalence and incidence of carpal tunnel syndrome in US working populations: pooled analysis of six prospective studies.
    [show abstract] [hide abstract]
    ABSTRACT: OBJECTIVES: Most studies of carpal tunnel syndrome (CTS) incidence and prevalence among workers have been limited by small sample sizes or restricted to a small subset of jobs. We established a common CTS case definition and then pooled CTS prevalence and incidence data across six prospective studies of musculoskeletal outcomes to measure CTS frequency and allow better studies of etiology. METHODS: Six research groups collected prospective data at >50 workplaces including symptoms characteristic of CTS and electrodiagnostic studies (EDS) of the median and ulnar nerves across the dominant wrist. While study designs and the timing of data collection varied across groups, we were able to create a common CTS case definition incorporating both symptoms and EDS results from data that were collected in all studies. RESULTS: At the time of enrollment, 7.8% of 4321 subjects met our case definition and were considered prevalent cases of CTS. During 8833 person-years of follow-up, an additional 204 subjects met the CTS case definition for an overall incidence rate of 2.3 CTS cases per 100 person-years. CONCLUSIONS: Both prevalent and incident CTS were common in data pooled across multiple studies and sites. The large number of incident cases in this prospective study provides adequate power for future exposure-response analyses to identify work and non-work related risk factors for CTS. The prospective nature allows determination of the temporal relations necessary for causal inference.
    Scandinavian journal of work, environment & health 02/2013; · 3.12 Impact Factor
  • Article: Correlation between different hand force assessment methods from an epidemiological study
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    ABSTRACT: This article presents the outcome of correlation analyses of data results obtained from using different methods for objectively and subjectively assessing hand force from a prospective study of 450 blue-collar workers from several companies and industries, followed for up to 3 years. The study collected detailed ergonomic exposure data at baseline and upper extremity health outcome data at baseline and every 4 months during the study. Ultimately, the study was intended to evaluate dose-response relationships of specific upper extremity disorders with detailed physical and psychosocial exposure data at the workplace while controlling for important individual factors. This article presents the methods used to collect data, as well as the hand force results of the epidemiological study in aggregate correlated form, as a means of exploring the degree of independence between the variables considered. These insights are useful in identifying musculoskeletal disorder (MSD) causation and predicting MSD risk ba
    Human Factors and Ergonomics in Manufacturing 01/2013; · 0.61 Impact Factor
  • Article: Case Study
    Michael R. Cooper, Pam Susi, David Rempel
    Journal of Occupational and Environmental Hygiene 02/2012; 9(2):D35-D41. · 1.19 Impact Factor

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