Physiological stress reactivity and recovery: Some laboratory results transfer to daily life.

Stress is a prevalent theme in our daily lives and is related to numerous negative health outcomes. Laboratory research has studied the physiological stress response extensively with objective measures such as vagally-mediated heart rate variability (vmHRV). Recently, the vagal tank theory emerged as a promising approach to predicting adaptive vmHRV levels around stressful events. This study aimed to investigate whether the predictions of the vagal tank theory about vmHRV during stress reactivity and recovery translate into naturalistic stressful events in daily life. Sixty-seven students wore an EcgMove 4 sensor for 4 days to measure vmHRV. Through a combination of device-based and self-report assessment, vmHRV data were segmented into before, during, and after stressful events. VmHRV segments were analyzed with multilevel modeling, accounting for physiological and psychological covariates. VmHRV before stressful events predicted more adaptive vmHRV during the event but not vmHRV recovery afterwards. The results therefore partially support the vagal tank theory's predictions with data from daily life and allow recommendations for future studies of real-world stress reactivity and recovery. The value of intraindividual variations in vmHRV as predictors of adaptive stress response is underscored by these findings and could inform future interventions that seek to increase momentary vmHRV

Contextualized Measurement Scale Adaptation: A 4-Step Tutorial for Health Psychology Research.

Health psychology research is inherently context specific: Different health behaviors are executed by different target groups (e.g., gender, age) in different social structures, cultures, and environments. This asks for the adaptation of research instruments to enhance specificity. For example, when using measurement scales in new contexts, translation and psychometric validation of the instruments are necessary but not sufficient if the validity of the psychological concept behind a measurement scale has not been researched. In this study, we build on existing guidelines of translation as well as psychometric validation and present four steps on how to adapt measurement scales to a new context: Step 1 asks whether the psychological concept is found in the new context. Step 2 asks whether the measurement scale and its items are understood in the new context. Step 3 asks whether a measurement scale is valid and reliable. Step 4 asks how the items of the measurement scale perform individually. Following these four steps, measurement scales are carefully translated, adapted, and validated and can therefore be transferred to very different contexts

Older adults' physical activity after lockdown: Testing the health action process approach and the moderating role of fear of Covid-19.

The coronavirus pandemic has influenced many lives, particularly older adults'. Although isolation protects from infection, health behaviors like physical activity (PA) are important to reinstate after lockdown. However, fear of Covid-19 may act as a barrier, for example, by preventing people from going outside. Based on the health action process approach (HAPA), we investigated whether and why older adults' PA changed after lockdown, and whether fear of Covid-19 moderates the intention-behavior relationship. Participants of this longitudinal study aged 65+ from German-speaking Europe completed an online questionnaire about their PA, fear of Covid-19, and HAPA factors in April and May 2020. Data were analyzed using multiple linear regressions. Results showed that moderate to vigorous activity (MVPA) remained stable after lockdown and that self-efficacy most robustly influenced the intention to be active. PA was not explained by any volitional factor but was strongly related to past PA. Interestingly, the relationship of past and future MVPA was attenuated by fear of Covid-19, but this finding was not robust when outliers were removed. In conclusion, self-efficacy is the most important motivator for PA in older adults after an interruption like a lockdown. Strong physical activity habits may facilitate PA after a period of isolation

Mind the Gap? : An Intensive Longitudinal Study of Between-Person and Within-Person Intention-Behavior Relations

Acknowledgments This work was supported by the University of Konstanz, Germany. The first author was supported by a fellowship of the Swiss National Science Foundation (Fellowship P2ZHP1_155103).Peer reviewedPostprin

Differences in stakeholders' and end users' preferences of arsenic mitigation options in Bangladesh

Aim: Arsenic contamination of drinking water is a public health crisis. Since its detection in Bangladesh, the world's most arsenic-affected country, organizations involved (i.e., stakeholders) have made great efforts by testing wells and installing safe water options. Yet, 20 million Bangladeshi are still at risk. It has been suggested that the discrepancy between stakeholders' and end users' preferences of arsenic mitigation options is one reason for the slow progress. Therefore, this study aimed at comparing stakeholders' and end users' preferences. Subjects and methods: Three investigations were conducted in Bangladesh: a series of qualitative interviews with 22 stakeholders and two end user surveys with a total of 1,268 randomly selected households living in six arsenic-affected districts of Bangladesh. Results: Stakeholders mostly preferred rural piped water supplies and deep tubewells, while their least preferred options were dug wells and arsenic removal filters. End users mostly preferred deep tubewells, well-sharing and rural piped water supplies, while dug wells were least preferred. End users identified several disadvantages of mitigation options, including long distances, great effort to collect water and difficult social situations. They further demonstrated moderate willingness to pay for a rural piped water supply, deep tubewells and pond sand filters, but lower willingness for other options. Conclusion: Stakeholders' and end users' preferences converged for deep tubewells and rural piped water supplies, while well-sharing was preferred by end users, but not by stakeholders. The results suggest installing deep tubewells and rural piped water supplies with greater priority. Furthermore, stakeholders' preferences to promote well-sharing should be enhanced

Understanding safe water‐carrying practices during pregnancy and postpartum: A mixed‐methods study in Nepal

Daily carrying of heavy loads of domestic water, especially during pregnancy and postpartum, bears a threat to maternal health in low-income countries. Using an extended health action process approach (HAPA), we examined women's reasons for and psychosocial determinants of safe water-carrying during pregnancy and postpartum. In a mixed-methods study, trained local interviewers conducted 1001 quantitative interviews with women of reproductive age (n = 921 analyzed) and 21 qualitative interviews with women of reproductive age, in-laws, and spouses in rural Nepal. We analyzed the quantitative data with generalized estimating equations to model the HAPA-based psychosocial determinants of avoiding water-carrying during pregnancy and postpartum. Subjective perspectives were investigated with thematic analysis. Outcome expectancies (B = 0.24), self-efficacy (B = 0.20), and injunctive norms (B = 0.23) were significantly associated with the intention to avoid water-carrying. Self-efficacy (B = 0.36) and instrumental support (B = 0.05) are related to behavior (all p < 0.05). Women explained water-carrying during pregnancy by a lack of family support, a shift of health decision-making power to in-laws, and low behavioral control. Overall, the necessity of water, family decision-making structures, and low support make it difficult for women to discontinue water-carrying. Additionally to infrastructural improvements, behavioral interventions may increase women's self-efficacy for safe water-carrying (e.g. reducing weight) and social support

Water carrying in hills of Nepal-associations with women's musculoskeletal disorders, uterine prolapse, and spontaneous abortions.

More than a third of women in Nepal have to carry water from source to home to satisfy their families' daily needs. A cross-sectional study was carried out in a hilly area in Nepal to assess water-carrying practices and their association with women's health. Quantitative interviews were conducted with 1001 women of reproductive age and were complemented with health surveys carried out by health professionals and structured observations of water carrying. Multivariate mixed logistic regression models were used to assess the associations between water-carrying-related risk factors and health issues for women. Around 46% of women faced considerably increased to excessive physical stress due to water carrying during the dry season. Women suffered from a disproportionately high prevalence of back pain (61%), with about 18% of this pain being horrible to excruciating; pain in the knees (34%); uterine prolapse (11.3%); and at least one spontaneous abortion (9%). The risk category of water carrying was significantly associated with uterine prolapse (OR = 1.44, 95%CI = 1.12-1.85, p = 0.031) and pain in the hips (OR = 1.69, 95%CI = 1.27-2.26, p<0.001). Receiving help with water carrying during pregnancy and during the first three months after delivery was associated with reduced odds ratios for uterine prolapse (OR = 0.10, 95% CI = 0.01-0.87, p = 0.037), and strong back pain (OR = 0.32, 95% CI = 0.12-0.87, p = 0.026). Improvements to water supply infrastructure and the promotion of social support for carrying water during pregnancy and after delivery are recommended to reduce water-carrying-related health risks

Understanding Between-Person Interventions With Time-Intensive Longitudinal Outcome Data : Longitudinal Mediation Analyses

Acknowledgments The physical activity trial (Example 2) was funded by the Swiss National Science Foundation awarded to U.S. (PP00P1_133632/1). J.I. (P2ZHP1_155103) and C.B. (P2BEP1_158975) were supported by fellowships of the Swiss National Science Foundation. The authors thank Melanie Amrein, Pamela Rackow, and involved students for their contributions to the data collection in the eating behavior trial (Example 1). We also thank Niall Bolger for valuable discussions on this topic, and the New York University Couples Lab for helpful feedback on an earlier version of this manuscript.Peer reviewedPublisher PD