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BackgroundPerceptual congruence has been defined as the level of agreement between partners on various aspects of their shared lives, including perceived engagement in individual and jointly performed activities. While the level of adjustment made by partners to such activities is thought to contribute to a couple’s sense of mutuality, perceptions of time use concerning activity engagement has yet to be considered. As such, this study will determine the level of perceptual congruence between partners with respect to perceived time use in their respective and shared activities. ObjectiveThe primary objective of the IP-COUPLES study is to determine the similarities and differences between partners in terms of their perceptual congruence with respect to independent and jointly performed activities. This study will also examine the association between independent and joint activities in terms of perceptual congruence of time use and the strength of this association. MethodsThis descriptive observational study includes 100 couples from Western Switzerland who are recruited using snowball sampling methods. The Life Balance Inventory (LBI), a self-report questionnaire that captures activity configuration congruence, will measure independent and joint perceptions of both time use allocated to daily activities and corresponding satisfaction. Due to COVID-19, the protocol can be administered virtually by the primary investigator. The mean scores of perceptual congruence variables will be used for analysis, namely perceived congruence of time use in terms of independent and jointly performed activities. For the first objective, an independent t test will be used for each variable to compare the mean score between activities on the LBI. For the second objective, the correlations between the mean scores for these activities will be calculated for each variable using the Pearson correlation. ResultsThe IP-COUPLES study protocol was developed in 2019 and 2020. Enrollment began in June 2020. Data collection will continue until October 2021 to account for time needed for recruitment due to the COVID-19 pandemic crisis. Analysis and presentation of results are expected in 2022. ConclusionsThis study is exploratory, as it is the first to our knowledge to investigate how perceived time-use patterns with respect to independent or jointly performed activities are similar or different among romantic couples. By investigating the interpersonal perception of time-use patterns among couples, the IP-COUPLES study is an important first step to understanding how romantic partners’ daily activities are contributing to the level of satisfaction as a partner and as a couple and to the sense of mutuality between partners in a romantic relationship. International Registered Report Identifier (IRRID)DERR1-10.2196/21306

BackgroundUnderstanding the social mechanisms of the circadian rhythms of activity represents a major issue in better managing the mechanisms of age-related diseases occurring over time in the elderly population. The automated analysis of call detail records (CDRs) provided by modern phone technologies can help meet such an objective. At this stage, however, whether and how the circadian rhythms of telephone call activity can be automatically and properly modeled in the elderly population remains to be established. ObjectiveOur goal for this study is to address whether and how the circadian rhythms of social activity observed through telephone calls could be automatically modeled in older adults. MethodsWe analyzed a 12-month data set of outgoing telephone CDRs of 26 adults older than 65 years of age. We designed a statistical learning modeling approach adapted for exploratory analysis. First, Gaussian mixture models (GMMs) were calculated to automatically model each participant’s circadian rhythm of telephone call activity. Second, k-means clustering was used for grouping participants into distinct groups depending on the characteristics of their personal GMMs. ResultsThe results showed the existence of specific structures of telephone call activity in the daily social activity of older adults. At the individual level, GMMs allowed the identification of personal habits, such as morningness-eveningness for making calls. At the population level, k-means clustering allowed the structuring of these individual habits into specific morningness or eveningness clusters. ConclusionsThese findings support the potential of phone technologies and statistical learning approaches to automatically provide personalized and precise information on the social rhythms of telephone call activity of older individuals. Futures studies could integrate such digital insights with other sources of data to complete assessments of the circadian rhythms of activity in elderly populations.

BackgroundSelf-tracking via wearable and mobile technologies is becoming an essential part of personal health management. At this point, however, little information is available to substantiate the validity and reliability of low-cost consumer-based hip and wrist activity monitors, with regard more specifically to the measurements of step counts and distance traveled while walking. ObjectiveThe aim of our study is to assess the validity and reliability of step and distance measurement from a low-cost consumer-based hip and wrist activity monitor specific in various walking conditions that are commonly encountered in daily life. Specifically, this study is designed to evaluate whether and to what extent validity and reliability could depend on the sensor placement on the human body and the walking task being performed. MethodsThirty healthy participants will be instructed to wear four PBN 2433 (Nakosite) activity monitors simultaneously, with one placed on each hip and each wrist. Participants will attend two experimental sessions separated by 1 week. During each experimental session, two separate studies will be performed. In study 1, participants will be instructed to complete a 2-minute walk test along a 30-meter indoor corridor under 3 walking speeds: very slow, slow, and usual speed. In study 2, participants will be required to complete the following 3 conditions performed at usual walking speed: walking on flat ground, upstairs, and downstairs. Activity monitor measured step count and distance values will be computed along with the actual step count (determined from video recordings) and distance (measured using a measuring tape) to determine validity and reliability for each activity monitor placement and each walking condition. ResultsParticipant recruitment and data collection began in January 2020. As of June 2020, we enrolled 8 participants. Dissemination of study results in peer-reviewed journals is expected in spring 2021. ConclusionsTo the best of our knowledge, this is the first study that examines the validity and reliability of step and distance measurement during walking using the PBN 2433 (Nakosite) activity monitor. Results of this study will provide beneficial information on the effects of activity monitor placement, walking speed, and walking tasks on the validity and reliability of step and distance measurement. We believe such information is of utmost importance to general consumers, clinicians, and researchers. International Registered Report Identifier (IRRID)DERR1-10.2196/21262

BackgroundIn the elderly population, analysis of the circadian rhythms of social activity may help in supervising homebound disabled and chronically ill populations. Circadian rhythms are monitored over time to determine, for example, the stability of the organization of daily social activity rhythms and the occurrence of particular desynchronizations in the way older adults act and react socially during the day. Recently, analysis of telephone call detail records has led to the possibility of determining circadian rhythms of social activity in an objective unobtrusive way for young patients from their outgoing telephone calls. At this stage, however, the analysis of incoming call rhythms and the comparison of their organization with respect to outgoing calls remains to be performed in underinvestigated populations (in particular, older populations). ObjectiveThis study investigated the persistence and synchronization of circadian rhythms in telephone communication by older adults. MethodsThe study used a longitudinal 12-month data set combining call detail records and questionnaire data from 26 volunteers aged 70 years or more to determine the existence of persistent and synchronized circadian rhythms in their telephone communications. The study worked with the following four specific telecommunication parameters: (1) recipient of the telephone call (alter), (2) time at which the call began, (3) duration of the call, and (4) direction of the call. We focused on the following two issues: (1) the existence of persistent circadian rhythms of outgoing and incoming telephone calls in the older population and (2) synchronization with circadian rhythms in the way the older population places and responds to telephone calls. ResultsThe results showed that older adults have their own specific circadian rhythms for placing telephone calls and receiving telephone calls. These rhythms are partly structured by the way in which older adults allocate their communication time over the day. In addition, despite minor differences between circadian rhythms for outgoing and incoming calls, our analysis suggests the two rhythms could be synchronized. ConclusionsThese results suggest the existence of potential persistent and synchronized circadian rhythms in the outgoing and incoming telephone activities of older adults.

BackgroundRecent studies have thoughtfully and convincingly demonstrated the possibility of estimating the circadian rhythms of young adults’ social activity by analyzing their telephone call-detail records (CDRs). In the field of health monitoring, this development may offer new opportunities for supervising a patient’s health status by collecting objective, unobtrusive data about their daily social interactions. However, before considering this future perspective, whether and how similar results could be observed in other populations, including older ones, should be established. ObjectiveThis study was designed specifically to address the circadian rhythms in the telephone calls of older adults. MethodsA longitudinal, 12-month dataset combining CDRs and questionnaire data from 26 volunteers aged 65 years or older was used to examine individual differences in the daily rhythms of telephone call activity. The study used outgoing CDRs only and worked with three specific telecommunication parameters: (1) call recipient (alter), (2) time of day, and (3) call duration. As did the studies involving young adults, we analyzed three issues: (1) the existence of circadian rhythms in the telephone call activity of older adults, (2) their persistence over time, and (3) the alter-specificity of calls by calculating relative entropy. ResultsWe discovered that older adults had their own specific circadian rhythms of outgoing telephone call activity whose salient features and preferences varied across individuals, from morning until night. We demonstrated that rhythms were consistent, as reflected by their persistence over time. Finally, results suggested that the circadian rhythms of outgoing telephone call activity were partly structured by how older adults allocated their communication time across their social network. ConclusionsOverall, these results are the first to have demonstrated the existence, persistence, and alter-specificity of the circadian rhythms of the outgoing telephone call activity of older adults. These findings suggest an opportunity to consider modern telephone technologies as potential sensors of daily activity. From a health care perspective, these sensors could be harnessed for unobtrusive monitoring purposes.

This qualitative descriptive study aims to explore the lived experience of the adjustment process of couples who face vision loss, investigating the impact of such loss on daily life and the adjustments and adaptations that ensue. To undertake such an exploration, the application of an occupational perspective is relevant where the meaning and purpose partners ascribe to their everyday activities can be investigated. A total of 16 couples living in Western Switzerland were interviewed between January and June 2020. Data collection was carried out with semi-structured face-to-face interview. Three themes emerge from the thematic analysis of transcripts. The first theme emphasizes that either separate or joint everyday activities of partners can be shared within couples, which all give sense to the partnership; the second one shows that vision loss disrupts the engagement of partners in such shared everyday activities. The third theme highlights partners' efforts to reshape their engagement in their shared everyday activities in order to maintain a sense of couple's we-ness. While navigating vision loss requires both partners to jointly engage in this process of reshaping, couples described tension that arises because of the partners with vision loss' growing dependence on the other partner. One's sense of control when navigating vision loss is critical to adjust to a changing and changed daily life. Further research is needed that focuses on how romantic partners ascribe a shared meaning and purpose to their engagement in everyday activities, separate or joint, and how such meaning and purpose are impacted by the onset or aggravation of one partner's vision loss. [ABSTRACT FROM AUTHOR]