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Environmental justice research driven by academics and policymakers often overlooks the valuable insights and leadership of the communities most impacted by environmental hazards. When institution‐led research approaches are employed, inadequate community ownership and limited institutional accountability hinder the effectiveness of environmental public health interventions. In contrast, a community‐owned and ‐managed approach to environmental justice research can guide community members in developing evidence‐based interventions. This paper outlines a community‐led environmental health assessment survey (sample = 100) and resulting community actions over 6 years (2017–2023) in a Northern California farmworker community with a perceived high prevalence of cancer and exposure to environmental hazards in households, neighborhoods, and job sites. Local resident experts in Knights Landing, CA, documented community risk factors and exposures in collaboration with interdisciplinary undergraduate and graduate student‐researchers. The survey instrument focused on environmental hazards identified by local resident experts including vehicular and agricultural pollution, occupational pesticide contact, and sun exposure. Survey findings highlighted the need for targeted interventions to reduce environmental health risks, such as academic outreach programs, county investments in public services, and community‐led mutual aid initiatives. Despite academic reservations about our non‐random sampling method and data collection by local resident experts, our project sparked substantial actions and investments with minimal personnel and financial resources. Local leaders working with student‐researchers developed more effective environmental public health interventions through a community‐owned and ‐managed approach that went beyond the efforts of local regulatory and research institutions. Plain Language Summary: Agricultural communities in California experience environmental injustice related to toxic exposures in environmental, household, and occupational settings. Environmental justice movements seek to ensure a clean and healthy environment for all communities by mitigating these toxic exposures and amplifying community voices to remove social, economic, and political barriers to healthy environments. This research project started in 2016 when Knights Landing residents revealed their suspicions that environmental carcinogens were potentially causing a high prevalence of cancer in their neighborhood. The community leaders and university researchers partnered to conduct a community survey. The survey results were used by community leaders to establish the following action priorities: household pesticide exposure, addictive substance misuse, access to cancer screening, occupational safety, housing quality, and neighborhood isolation from health services. Feasible and prompt actions were implemented from 2017 to 2023 within the limited resources of this unincorporated community. Communities can initiate a swift, customized, representative environmental health assessment to serve as a starting point when seeking institutional support, funding, or larger research initiatives. Our approach may serve as a model for environmental justice researchers striving to promptly reduce environmental health risks in marginalized communities. Key Points: Agricultural community residents led a low‐budget environmental health survey to develop evidence‐based public health interventionsCommunities can use a carcinogen exposure survey to prioritize and develop actions that reduce cancer burdens in their neighborhoodWhen residents' priorities drive research directions, community solutions can be promptly launched within limited resource communities [ABSTRACT FROM AUTHOR]

This study examined the electromyographic (EMG) responses from the vastus medialis (VM) for electrodes placed over and away from the innervation zone (IZ) during a maximal voluntary isometric contraction (MVIC) and sustained, submaximal isometric muscle action. A linear electrode array was placed on the VM to identify the IZ and muscle fiber pennation angle during an MVIC and sustained isometric muscle action at 50% MVIC. EMG amplitude and frequency parameters were determined from 7 bipolar channels of the electrode array, including over the IZ, as well as 10 mm, 20 mm and 30 mm proximal and distal to the IZ. There were no differences between the channels for the patterns of responses for EMG amplitude or mean power frequency during the sustained, submaximal isometric muscle action; however, there were differences between channels during the MVIC. The results of the present study supported the need to standardize the placement of electrodes on the VM for the assessment of EMG amplitude and mean power frequency. Based on the current findings, it is recommended that electrode placements be distal to the IZ and aligned with the muscle fiber pennation angle during MVICs, as well as sustained, submaximal isometric muscle actions. [ABSTRACT FROM AUTHOR]

13 subjects performed an incremental test to exhaustion, 4, 8-min submaximal rides, and a 1-h ride at the rating of perceived exertion (RPE) that corresponded to the physical working capacity at the OMNI threshold (PWCOMNI) to examine: 1) the oxygen consumption (...O2), heart rate (HR), minute ventilation (...E), respiratory frequency (FR), and power output responses during 1-h work bouts at a constant RPE that corresponded to the PWCOMNI; and 2) the ability of current models to explain the responses for physiological and perceptual parameters during the 1 -h work bouts. The RPE that corresponded to the PWCOMNI represented a sustainable exercise intensity (56±5% (...O2Peak) within the moderate-intensity domain. The mean, normalized slope coefficients for the ...O2, ...E, and power output vs. time relationships during the 1-h rides were significantly less than zero. The mean, normalized slope coefficient for the FR vs. time relationship during the 1-h rides, however, was not significantly different from zero. Thus, RPE most clearly tracked FR responses during the 1 -h rides. It was hypothesized that afferent feedback from respiratory muscles may have mediated the perception of effort during cycle ergometry at a constant RPE in the moderate-intensity domain. [ABSTRACT FROM AUTHOR]

This study examined the time courses of recovery for isometric peak torque and rate of torque development (RTD) after eccentric-induced muscle damage. 18 men completed 6 sets of 10 maximal eccentric isokinetic muscle actions at 30 ° · s-1 . Peak torque, peak RTD and RTD at 10 (RTD10), 50 (RTD50), 100 (RTD100) and 200 ms (RTD200), serum creatine kinase and lactate dehydrogenase were measured before (PRE), immediately after (POST), 24, 48 and 72 h after eccentric exercise. Creatine kinase and lactate dehydrogenase increased from 139 to 6 457 and from 116 to 199 IU·L-1 from PRE to 72 h, respectively. Peak torque and all RTDs decreased at POST. Peak torque and RTD200 remained lower than PRE through 72 h. Peak RTD remained lower than PRE through 48 h, but was not diff erent from PRE at 72 h. RTD10 and RTD100 were lower than PRE through 24 h, but were not different from PRE at 48 and 72 h. RTD50 decreased at POST, but was not different from PRE at 24 h. Early phase RTDs recovered more quickly than PT and RTD200. Early phase RTDs may reflect neural mechanisms underlying eccentric-induced force decrements, while late RTDs may describe the same physiological mechanisms as PT. [ABSTRACT FROM AUTHOR]