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1.
J Occup Environ Hyg ; 21(3): 162-168, 2024 03.
Artículo en Inglés | MEDLINE | ID: mdl-38530223

RESUMEN

During the summer of 2022, a fire and explosion occurred in a sanitary sewer tunnel adjacent to the University of Minnesota Twin Cities campus, propelling utility maintenance covers several meters into the air and jeopardizing the safety of the public and emergency responders. The investigation into the explosion highlighted the complex variables involved in the response to sanitary sewer events. This case study outlines current approaches and proposes recommendations for agencies to be better prepared to prevent, detect, and respond to sewer-related incidents in the future. Our recommendations include the following: (1) proactive use of remote volatile organic compound (VOC) and lower explosive limit (LEL) monitoring in sanitary sewer tunnels, especially downstream of waste discharge sites; (2) incident responders should have access to instruments that measure oxygen, LEL, VOC concentration, carbon monoxide, and hydrogen sulfide; (3) better characterization of the relationship between sewer pressurization, elevation profiles, and vapor movement; (4) verification processes for oil/water separators used by industrial facilities discharging into the sanitary sewer system; (5) installation of ventilated or anchored pressure relief utility maintenance covers where allowed by code; and (6) building maintenance protocols that include regular drain flushing to keep drain traps filled. These measures are recommended to protect infrastructure and the health and safety of the public and the responders.


Asunto(s)
Odorantes , Compuestos Orgánicos Volátiles , Humanos , Explosiones , Universidades , Ciudades
2.
Int J Behav Nutr Phys Act ; 17(1): 133, 2020 10 27.
Artículo en Inglés | MEDLINE | ID: mdl-33109190

RESUMEN

BACKGROUND: Sedentary time is associated with chronic disease and premature mortality. We tested a multilevel workplace intervention with and without sit-stand workstations to reduce sedentary time and lower cardiometabolic risk. METHODS: Stand and Move at Work was a group (cluster) randomized trial conducted between January 2016 and December 2017 among full-time employees; ≥18 years; and in academic, industry/healthcare, and government worksites in Phoenix, Arizona and Minneapolis/St. Paul, Minnesota, USA. Eligible worksites were randomized to (a) MOVE+, a multilevel intervention targeting reduction in sedentary time and increases in light physical activity (LPA); or (b) STAND+, the MOVE+ intervention along with sit-stand workstations to allow employees to sit or stand while working. The primary endpoints were objectively-measured workplace sitting and LPA at 12 months. The secondary endpoint was a clustered cardiometabolic risk score (blood pressure, glucose, insulin, triglycerides, and HDL-cholesterol) at 12 months. RESULTS: Worksites (N = 24; academic [n = 8], industry/healthcare [n = 8], and government [n = 8] sectors) and employees (N = 630; 27 ± 8 per worksite; 45 ± 11 years of age, 74% female) were enrolled. All worksites were retained and 487 participants completed the intervention and provided data for the primary endpoint. The adjusted between arm difference in sitting at 12 months was - 59.2 (CI: - 74.6,-43.8) min per 8 h workday, favoring STAND+, and in LPA at 12 months was + 2.2 (- 0.9,5.4) min per 8 h workday. Change in the clustered metabolic risk score was small and not statistically significant, but favored STAND+. In an exploratory subgroup of 95 participants with prediabetes or diabetes, the effect sizes were larger and clinically meaningful, all favoring STAND+, including blood glucose, triglycerides, systolic blood pressure, glycated hemoglobin, LDL-cholesterol, body weight, and body fat. CONCLUSIONS: Multilevel workplace interventions that include the use of sit-stand workstations are effective for large reductions in sitting time over 12 months. Among those with prediabetes or diabetes, clinical improvements in cardiometabolic risk factors and body weight may be realized. TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT02566317 . Registered 2 October 2015, first participant enrolled 11 January 2016.


Asunto(s)
Enfermedades Cardiovasculares/prevención & control , Ejercicio Físico/fisiología , Promoción de la Salud/métodos , Conducta Sedentaria , Lugar de Trabajo , Arizona , Glucemia , Presión Sanguínea , Humanos , Minnesota
3.
Work ; 61(4): 501-507, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-30475779

RESUMEN

The office ergonomic design from the late 1980s to the present has undergone significant changes during the transition from typewriters to the various human computer interfaces that evolved to the present day. Designs to accommodate various sized monitors and pointing devices have posed a challenge for ergonomist and designers of office workstations. Recent research suggesting adverse health effects associated with sedentary work environments have put additional pressure to incorporate the option to stand while working. This article reviews the current available options and suggests approaches to workplace design to meet the desire for employees to vary their work environment and the concern by management for worker health.


Asunto(s)
Terminales de Computador , Ergonomía/métodos , Diseño Interior y Mobiliario/métodos , Postura , Humanos , Diseño Interior y Mobiliario/economía , Diseño Interior y Mobiliario/normas , Salud Laboral , Conducta Sedentaria , Lugar de Trabajo
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