Effects of face masks on cardiopulmonary performance in a partly double-blinded randomized cross-over study

Background: The use of face masks in the public and at work became mandatory as a result of the SARS-CoV-2 pandemic in many countries. Wearing masks under physical work or for a prolonged time may lead to complaints of labored breathing and increased stress. The influence of three types of masks on cardiopulmonary performance was investigated in a randomized cross-over design. Method(s): Forty volunteers (20 women, 19-65 years) underwent bodyplethysmography, spiroergometric and ergometric exercise tests without mask, with a surgical mask, a community mask and a FFP2 mask. Additionally, a 4hour mask wearing period was investigated during regular work (office or laboratory). Cardiopulmonary, physical, capnometric, and blood gas-related parameters were recorded. Result(s): Breathing resistance and work of breathing were increased when wearing a mask. During physical exercise minute ventilation was lower and the breathing cycle time was extended with mask. Wearing a mask caused minimal decreases in blood oxygen partial pressure (pO2) and oxygen saturation (sO2) and an initial slight rise in blood carbon dioxide partial pressure (pCO2) during exercise. All effects were most pronounced with FFP2. Temperature, humidity, and inspiratory CO2 concentration slightly increased behind the mask. No changes in pO2, sO2, and pCO2 were observed during the 4-hour wearing period at work. Conclusion(s): Wearing face masks at rest and under workload changed the breathing pattern in the sense of physiological compensation. Wearing a mask for 4 hours during light work had no effect on blood gases and no adverse effects were observed throughout all testing.

The Research Imagination During COVID-19: Rethinking Norms of Group Size and Authorship in Anthropological and Anthropology-Adjacent Collaborations

This article explores some of the ways in which the COVID-19 pandemic has served as a collective critical event for anthropologists and other social scientists, examining how it has promoted new configurations of the research imagination. We draw on our own experiences of participating in a team of 17 researchers, hailing from anthropology and anthropology-adjacent disciplines, to research social life in Aotearoa/New Zealand during the pandemic, examining how our own research imaginations were transformed during, and via, the process of our collaboration. When our project first began, many of us had doubts reflective of norms, prejudices and anxieties that are common in our disciplines: that the group would be too large to function effectively, or that it would be impossible to develop an approach to authorship that would allow everyone to feel their contributions had been adequately recognised. In practice, the large group size was a key strength in allowing our group to work effectively. Difficulties with authorship did not arise from within the group but from disconnects between our preferred ways of working and the ways authorship was imagined within various professional and publishing bodies. We conclude that large-scale collaborations have many points in their favour, and that the research imaginations of funders, journals, universities and professional associations should be broadened to ensure that they are encouraged, supported and adequately rewarded. © 2023 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.

'Safer communities horizontal ellipsis together'? Plural policing and COVID-19 public health interventions in Aotearoa New Zealand

International media have praised Aotearoa New Zealand for its response to the coronavirus pandemic. While New Zealand Police played a fundamental role in enforcing pandemic control measures, the policing landscape remained plural. This article employs Loader [2000. Plural policing and democratic governance. Social and legal studies, 9 (3), 323-345] model of plural policing to understand responses to public health emergencies. It identifies two forms of policing which were evident in Aotearoa during the COVID-19 lockdown that should be added to Loader's model. First, we argue that contexts with colonial history require that the model not only includes by-government and below-government policing but also next-to-government policing by Indigenous peoples - such as the 'community checkpoints' run by Maori. Second, and further developing Loader's model, we argue that the category of below-government policing be expanded to include 'peer-to-peer policing' in which government responsibilizes members of the public to subject each other to large-scale surveillance and social control. Since plural forms of policing affect each other's functionality and legitimacy, we argue that what happens at the synapses between policing nodes has profound implications for the process of community building. Because community building is essential to fighting pandemics, we conclude that the policing of pandemic intervention measures may require an expanded understanding and practice of plural policing to support an optimal public health strategy.