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The Prognostic Significance of Sleep and Circadian Rhythm for Myocardial Infarction Outcomes: Case-Control Study

The Prognostic Significance of Sleep and Circadian Rhythm for Myocardial Infarction Outcomes: Case-Control Study

The average circadian activity template of the myocardial infarction (MI) patient cohort, synthesized from actigraphy data. It depicts the group’s collective rest-activity cycles over a standard 24-hour period, highlighting the marked decreased amplitude of daytime and nighttime activity changes observed after acute MI. Acrophase map showing the timings of the midpoint of M10 of myocardial infarction (MI) patients and healthy controls.

Wei-Chih Chin, Pao-Hsien Chu, Lung-Sheng Wu, Kuang-Tso Lee, Chen Lin, Chien-Te Ho, Wei-Sheng Yang, I-Hang Chung, Yu-Shu Huang

J Med Internet Res 2025;27:e63897

Influencers in Policy Fields on Social Media: Global Longitudinal Study of Dietary Sodium Reduction Posts, 2006-2022

Influencers in Policy Fields on Social Media: Global Longitudinal Study of Dietary Sodium Reduction Posts, 2006-2022

Activity ranged from 168 to 11,612. Popularity ranged from 0 to 528. For visualization purposes, activity and popularity were scaled to be between 0 and 1. AHA: American Heart Association; WHO: World Health Organization. The AHA had increasing posting activity from the creation of their account in 2010 through 2015 but the posting volume started decreasing following that year (Figure 4, middle panel).

Alana Montoya, Lingchao Mao, Adam Drewnowski, Joshua Chen, Ella Shi, Aileen Liang, Bryan J Weiner, Yanfang Su

J Med Internet Res 2024;26:e54506

A Voice-Activated Device Exercise and Social Engagement Program for Older Adult–Care Partner Dyads: Pilot Clinical Trial and Focus Group Study Evaluating the Feasibility, Use, and Estimated Functional Impact of EngAGE

A Voice-Activated Device Exercise and Social Engagement Program for Older Adult–Care Partner Dyads: Pilot Clinical Trial and Focus Group Study Evaluating the Feasibility, Use, and Estimated Functional Impact of EngAGE

The adapted frailty phenotype included 5 components: unintentional weight loss in the prior year (5% or 10 pounds), weakness (average of 3 dominant grip strength measures), exhaustion (2 self-reported questions from the Center for Epidemiologic Studies Depression Scale [16,17]), slowness (average of 3 15-foot usual walks), and low physical activity level (6-item version of the Minnesota Leisure Time Physical Activities Questionnaire [16,18]; Text S1 in Multimedia Appendix 2 [16-19]).

Megan Huisingh-Scheetz, Roscoe F Nicholson III, Saira Shervani, Chelsea Smith, Margaret Danilovich, Laura Finch, Yadira Montoya, Louise C Hawkley

JMIR Aging 2024;7:e56502

Gait Features in Different Environments Contributing to Participation in Outdoor Activities in Old Age (GaitAge): Protocol for an Observational Cross-Sectional Study

Gait Features in Different Environments Contributing to Participation in Outdoor Activities in Old Age (GaitAge): Protocol for an Observational Cross-Sectional Study

For example, the environment where the activity takes place is typically not recorded, so it is not known whether changes in gait represent a response to some specific environmental demand or whether it is an expression of a person’s usual performance.

Merja Rantakokko, Emmi Matikainen-Tervola, Eeva Aartolahti, Sanna Sihvonen, Julija Chichaeva, Taija Finni, Neil Cronin

JMIR Res Protoc 2024;13:e52898

Assessing the Effect of Extreme Weather on Population Health Using Consumer-Grade Wearables in Rural Burkina Faso: Observational Panel Study

Assessing the Effect of Extreme Weather on Population Health Using Consumer-Grade Wearables in Rural Burkina Faso: Observational Panel Study

Activities reported in the activity diaries were thematically summarized into 9 categories and quantified relative to the total number of activity journal responses. Similarly, the heat questionnaire was analyzed, and responses were summarized based on the frequency of replies. We conducted a linear mixed-effects analysis of the relationship between weather exposure and daily activity (steps), sleep duration, and nighttime HR using the lmer function of the lme4 R package (version 1.1.34 [51]).

Mara Koch, Ina Matzke, Sophie Huhn, Ali Sié, Valentin Boudo, Guillaume Compaoré, Martina Anna Maggioni, Aditi Bunker, Till Bärnighausen, Peter Dambach, Sandra Barteit

JMIR Mhealth Uhealth 2023;11:e46980

Understanding Physical Activity Determinants in an HIV Self-Management Intervention: Qualitative Analysis Guided by the Theory of Planned Behavior

Understanding Physical Activity Determinants in an HIV Self-Management Intervention: Qualitative Analysis Guided by the Theory of Planned Behavior

One effective intervention shown to decrease mortality and improve health outcomes related to CVD and diabetes in people living with HIV is increased regular physical activity [1,6]. Increasing physical activity is critical because of the comorbidities associated with CVD and diabetes [1,7]. However, physical activity rates among people living with HIV remain low compared to the general population [1,7,8].

Gabriella Sanabria, Brady Bushover, Sarah Ashrafnia, Evette Cordoba, Rebecca Schnall

JMIR Form Res 2023;7:e47666

A Tailored mHealth App for Improving Health and Well-Being Behavioral Transformation in UK Police Workers: Usability Testing via a Mixed Methods Study

A Tailored mHealth App for Improving Health and Well-Being Behavioral Transformation in UK Police Workers: Usability Testing via a Mixed Methods Study

The activity section (Figure 3) is currently incomplete without a fully developed tracker, and information provision is not going to help in maintaining good fitness levels in isolation. However, most participants (7/9, 78%) thought that the information provided was relevant, helpful, and comprehensive.

Richa Mehra, Andy Pulman, Huseyin Dogan, Jane Murphy, Fiona Bitters

JMIR Hum Factors 2023;10:e42912

Perspectives of Rehabilitation Professionals on Implementing a Validated Home Telerehabilitation Intervention for Older Adults in Geriatric Rehabilitation: Multisite Focus Group Study

Perspectives of Rehabilitation Professionals on Implementing a Validated Home Telerehabilitation Intervention for Older Adults in Geriatric Rehabilitation: Multisite Focus Group Study

Geriatric rehabilitation (GR) is defined as “a multidimensional approach of diagnostic and therapeutic interventions, the purpose of which is to optimize functional capacity, promote activity and preserve functional reserve and social participation in older people with disabling impairments” [4]. GR consists of multidisciplinary care with a focus on function and participation after acute illness or functional decline [5,6].

Margriet Pol, Amarzish Qadeer, Margo van Hartingsveldt, Mohamed-Amine Choukou

JMIR Rehabil Assist Technol 2023;10:e44498

A 4D Theoretical Framework for Measuring Topic-Specific Influence on Twitter: Development and Usability Study on Dietary Sodium Tweets

A 4D Theoretical Framework for Measuring Topic-Specific Influence on Twitter: Development and Usability Study on Dietary Sodium Tweets

Activity refers to a user’s participation in a social network. Examples of activity measures include Tweet Rank (total number of tweets by the user), Tweet count score (number of original tweets and retweets), and general activity (sum of visible actions of a user) [8]. To measure the activity related to a specific topic, algorithms such as Topical Signal and Signal Strength [7] have been proposed by previous studies. Popularity refers to the attention a user receives from the social network.

Lingchao Mao, Emily Chu, Jinghong Gu, Tao Hu, Bryan J Weiner, Yanfang Su

J Med Internet Res 2023;25:e45897

The Effects of Exergaming on Executive and Physical Functions in Older Adults With Dementia: Randomized Controlled Trial

The Effects of Exergaming on Executive and Physical Functions in Older Adults With Dementia: Randomized Controlled Trial

Neural activity during executive function tasks can be measured using electroencephalography (EEG) to record event-related potentials (ERPs) during neuropsychological task performance. The Eriksen flanker test, the Stroop task, the Go/No-go task, and Trail Making Test B are commonly used in neuropsychological test batteries to assess executive function.

Shanshan Wu, Hongqing Ji, Junyeon Won, Eun-Ah Jo, Yun-Sik Kim, Jung-Jun Park

J Med Internet Res 2023;25:e39993