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Sleep and Activity Patterns as Transdiagnostic Behavioral Biomarkers in Psychiatry: Longitudinal Observational Study From the DeeP-DD Study

Sleep and Activity Patterns as Transdiagnostic Behavioral Biomarkers in Psychiatry: Longitudinal Observational Study From the DeeP-DD Study

Finally, in bipolar disorder, sleep and activity disturbances persist even during euthymia and are tied to episode onset, severity, and long-term outcomes [31-33]. Despite their promise, existing studies of actigraphy-derived sleep and activity features have often examined narrow diagnostic groups or short, fixed observation windows, limiting generalizability [34,35].

Dylan Hamitouche, Tihare Zamorano, Youcef Barkat, Deven Parekh, Lena Palaniyappan, Sara Jalali, David Benrimoh

JMIR Form Res 2025;9:e81107


Adherence to Actigraphic Devices in Elementary School–Aged Children: Systematic Review and Meta-Analysis

Adherence to Actigraphic Devices in Elementary School–Aged Children: Systematic Review and Meta-Analysis

Wearable activity trackers, especially actigraphs, are unparalleled in their ability to provide naturalistic and cost-effective motion data, making them invaluable for monitoring children’s physical activity and sleep patterns [1,2]. Actigraphy is now widely deployed across research settings, including clinical trials, and is increasingly being integrated into health care settings to obtain objective biomarkers for pediatric activity and sleep [3-8].

Anna C Morris, Asilay Seker, Laurence Telesia, Alice Wickersham, Brian CF Ching, Rahul Roy, Sophie Epstein, Faith Matcham, Edmund Sonuga-Barke, Johnny Downs

J Med Internet Res 2025;27:e79718


Temporal Trajectories in Sleep, Temperature Trends, Cardiorespiratory, and Activity Metrics Measured via Oura Ring During Pregnancy: Large-Scale Observational Analysis

Temporal Trajectories in Sleep, Temperature Trends, Cardiorespiratory, and Activity Metrics Measured via Oura Ring During Pregnancy: Large-Scale Observational Analysis

Daily Time in bed (hours), asleep (hours), awake (hours), and time spent in “light” sleep (equivalent of PSGa N1+N2 sleep; % time asleep), “deep” sleep (equivalent of PSG N3 sleep; % time asleep) and rapid-eye-movement (REM) sleep (% time asleep), for the Oura classified main nocturnal sleep (>3h sleep duration). For each participant, single daily measures of overnight sleep measures were obtained.

Rebecca Adaimi, Nina Thigpen, Alicia Clausel, Neta Gotlieb, Ketan Patel, Massimiliano de Zambotti

JMIR Mhealth Uhealth 2025;13:e80213


Using Mobile Assessments to Characterize Mental and Physical Health Behaviors in Youth: Protocol for a Pilot Intensive Longitudinal Study

Using Mobile Assessments to Characterize Mental and Physical Health Behaviors in Youth: Protocol for a Pilot Intensive Longitudinal Study

During this period, youth respond to these numerous biopsychosocial challenges with increasing personal autonomy, manifesting profound shifts across multiple health behavior patterns, including sleep [1-3], physical activity [4,5], dietary habits [6-8], and substance use [9].

Konstantin Drexl, Sébastien Urben, Kerstin Jessica Plessen, Jennifer Glaus

JMIR Res Protoc 2025;14:e70990


Lifestyle eHealth and mHealth Interventions for Children and Adolescents: Systematic Umbrella Review and Meta–Meta-Analysis

Lifestyle eHealth and mHealth Interventions for Children and Adolescents: Systematic Umbrella Review and Meta–Meta-Analysis

Adequate sleep in both quality and duration is vital for cognitive function and mental health [10], while a balanced diet is essential for maintaining a healthy weight and supporting optimal growth and development [11]. It is important to recognize that, in addition to physical activity, sedentary behavior, sleep, and healthy eating, other lifestyle factors—such as stress management, social engagement, and substance use—also play significant roles in overall health.

Ben Singh, Mavra Ahmed, Amanda E Staiano, Maria F Vasiloglou, Claire Gough, Jasmine M Petersen, Zenong Yin, Corneel Vandelanotte, Chelsea Kracht, Janis Fiedler, Irina Timm, Joan Dallinga, Bridve Sivakumar, Hannes Baumann, Christopher Huong, Kathrin Wunsch, Mónica Suárez-Reyes, Stephanie Schoeppe, Alyssa M Button, Katherine Spring, Carol Maher

J Med Internet Res 2025;27:e69065


At-Home Morning Bright Light Treatment for Chronic Nociplastic Pain: Protocol for a Randomized Clinical Trial

At-Home Morning Bright Light Treatment for Chronic Nociplastic Pain: Protocol for a Randomized Clinical Trial

The FM Sleep A to ZZZ Study is a prospective single-center randomized clinical trial with a 3-arm parallel groups design comparing 4 weeks of morning light treatment, sleep stabilization, and TAU in patients with fibromyalgia. The TAU group will be presented to participants as a study of sleep monitoring to minimize group differences in treatment expectations. A sample diagram of the study protocol is shown in Figure 2.

Helen J Burgess, Allie A Rodgers, Kiley A McNeil, Jackson Mott, Agnes Fejer, Tori Dereski, Muneer Rizvydeen, Kimberly T Sibille, Hyungjin Myra Kim, Cherie Cofield, John W Burns, Sana Shaikh, Afton L Hassett

JMIR Res Protoc 2025;14:e75060


Bedtime App–Guided Mindfulness Meditation in Patients With Insomnia: Mixed Methods Feasibility and Acceptability Pilot Study

Bedtime App–Guided Mindfulness Meditation in Patients With Insomnia: Mixed Methods Feasibility and Acceptability Pilot Study

sleep environment, they had self-reported sleep onset latency >20 minutes; (3) speak and understand English; and (4) have a smart device for mobile app installation.

Yan Ma, Peter M Wayne, Janet M Mullington, Suzanne Bertisch, Gloria Y Yeh

JMIR Form Res 2025;9:e67366


Leveraging Smart Bed Technology to Detect COVID-19 Symptoms: Case Study

Leveraging Smart Bed Technology to Detect COVID-19 Symptoms: Case Study

Certain antimicrobial peptides and cytokines act to prolong sleep, and increased sleep during infection is protective [20]. Thus, a possible immunological function of sleep is to support host defense, which has the evolutionary advantage of preparing the immunological response during a period of low metabolic need and quiescence [21]. Conversely, sleep disturbance appears to negatively impact immune function.

Gary Garcia-Molina, Dmytro Guzenko, Susan DeFranco, Mark Aloia, Rajasi Mills, Faisal Mushtaq, Virend K Somers

JMIR AI 2025;4:e64018


Dynamic Interactions Among Sleep Duration, Cognitive Function, and Depressive Symptoms in Middle-Aged and Older Chinese Adults: Temporal Network Analysis From CHARLS

Dynamic Interactions Among Sleep Duration, Cognitive Function, and Depressive Symptoms in Middle-Aged and Older Chinese Adults: Temporal Network Analysis From CHARLS

Moreover, both “bothered” and “depressed” were negatively associated with shorter sleep duration, aligning with previous findings [33]. Intriguingly, longer sleep duration predicted lower numerical ability, perhaps because middle-aged and older individuals, despite extended sleep periods, often experience frequent nocturnal awakenings that compromise sleep quality [34].

Furong Chen, Jiaying Li, Junchen Guo, Ying Xiong, Zengjie Ye

JMIR Aging 2025;8:e76210