keyword
MENU ▼
Read by QxMD icon Read
search

Actigraphy

keyword
https://www.readbyqxmd.com/read/28738082/short-term-sleep-deprivation-leads-to-decreased-systemic-redox-metabolites-and-altered-epigenetic-status
#1
Malav S Trivedi, Dana Holger, Anh Tuyet Bui, Travis J A Craddock, Jaime L Tartar
Sleep is critical for repair as well as the rejuvenation processes in the body and many of these functions are regulated via underlying cellular metabolic homeostasis. Changes in sleep pattern are reported to alter such metabolic function resulting in altered disease susceptibility or behavior. Here, we measured the extent to which overnight total sleep deprivation (SD) in young adult humans can influence systemic (plasma-derived) redox-metabolism including the major antioxidant, glutathione as well as DNA methylation levels...
2017: PloS One
https://www.readbyqxmd.com/read/28711776/sleep-wake-profiles-and-circadian-rhythms-of-core-temperature-and-melatonin-in-young-people-with-affective-disorders
#2
Joanne S Carpenter, Rébecca Robillard, Daniel F Hermens, Sharon L Naismith, Christopher Gordon, Elizabeth M Scott, Ian B Hickie
While disturbances of the sleep-wake cycle are common in people with affective disorders, the characteristics of these disturbances differ greatly between individuals. This heterogeneity is likely to reflect multiple underlying pathophysiologies, with different perturbations in circadian systems contributing to the variation in sleep-wake cycle disturbances. Such disturbances may be particularly relevant in adolescents and young adults with affective disorders as circadian rhythms undergo considerable change during this key developmental period...
July 8, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28710215/a-study-protocol-for-an-observational-cohort-investigating-cognitive-outcomes-and-wellness-in-survivors-of-critical-illness-the-cogwell-study
#3
M Elizabeth Wilcox, Andrew S Lim, Mary P McAndrews, Richard A Wennberg, Ruxandra L Pinto, Sandra E Black, Karolina D Walczak, Jan O Friedrich, Michael S Taglione, Gordon D Rubenfeld
INTRODUCTION: Up to 9 out of 10 intensive care unit (ICU) survivors will suffer some degree of cognitive impairment at hospital discharge and approximately half will have decrements that persist for years. The mechanisms for this newly acquired brain injury are poorly understood. The purpose of this study is to describe the prevalence of sleep abnormalities and their association with cognitive impairment, examine a well-known genetic risk factor for dementia (Apolipoprotein E ε4) that may allow for genetic risk stratification of ICU survivors at greatest risk of cognitive impairment and determine if electroencephalography (EEG) is an independent predictor of long-term cognitive impairment and possibly a candidate intermediate end point for future clinical trials...
July 13, 2017: BMJ Open
https://www.readbyqxmd.com/read/28701566/chronotype-variation-drives-night-time-sentinel-like-behaviour-in-hunter-gatherers
#4
David R Samson, Alyssa N Crittenden, Ibrahim A Mabulla, Audax Z P Mabulla, Charles L Nunn
Sleep is essential for survival, yet it also represents a time of extreme vulnerability to predation, hostile conspecifics and environmental dangers. To reduce the risks of sleeping, the sentinel hypothesis proposes that group-living animals share the task of vigilance during sleep, with some individuals sleeping while others are awake. To investigate sentinel-like behaviour in sleeping humans, we investigated activity patterns at night among Hadza hunter-gatherers of Tanzania. Using actigraphy, we discovered that all subjects were simultaneously scored as asleep for only 18 min in total over 20 days of observation, with a median of eight individuals awake throughout the night-time period; thus, one or more individuals was awake (or in light stages of sleep) during 99...
July 12, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28682534/objectively-assessed-sleep-variability-as-an-acute-warning-sign-of-suicidal-ideation-in-a-longitudinal-evaluation-of-young-adults-at-high-suicide-risk
#5
Rebecca A Bernert, Melanie A Hom, Naomi G Iwata, Thomas E Joiner
OBJECTIVE: Young adults attempt suicide at disproportionately high rates relative to other groups and demonstrate high rates of sleep disturbance. No study has yet prospectively evaluated disturbed sleep as an acute indicator of risk using an objective index of sleep. We investigated objective and subjective parameters of disturbed sleep as a warning sign of suicidal ideation among young adults over an acute period. METHODS: A longitudinal study across a 21-day observation period and 3 time points...
June 2017: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/28679366/rest-activity-rhythms-in-small-scale-homelike-care-and-traditional-care-for-residents-with-dementia
#6
Jeroen S Kok, Ina J Berg, Gerwin C G Blankevoort, Erik J A Scherder
BACKGROUND: An enriched environment for residents with dementia may have a positive effect on the rest-activity rhythm. A small scaled homelike special care unit might be such an enriched environment. The present study shows whether the rest-activity rhythm of residents with moderate to severe dementia responds positively to a transfer from a regular Special Care Unit (SCU) to a small scaled homelike SCU. METHODS: Initially, a group of 145 residents living in a regular SCU participated...
July 5, 2017: BMC Geriatrics
https://www.readbyqxmd.com/read/28674597/sleep-hygiene-education-improves-sleep-indices-in-elite-female-athletes
#7
Shannon O'Donnell, Matthew W Driller
The importance of sleep in providing psychophysiological recovery in elite athletes is often overlooked. In other populations (eg shift workers and adolescent students), sleep hygiene education may serve to acutely improve sleep indices. However, this is yet to be examined in an elite athlete setting. Therefore, the aim of the current study was to evaluate the effect of a sleep hygiene education session on sleep indices in elite athletes. The study involved 26 elite female netball athletes performing one week of baseline sleep monitoring (PRE), followed by a sleep hygiene education session and a further week of sleep monitoring (POST) in a single group, pre- post design...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28668919/feasibility-of-continuous-actigraphy-in-patients-in-a-medical-intensive-care-unit
#8
Biren B Kamdar, Daniel J Kadden, Sitaram Vangala, David A Elashoff, Michael K Ong, Jennifer L Martin, Dale M Needham
BACKGROUND: Poor sleep and immobility are common in patients in the medical intensive care unit (MICU) and are associated with adverse outcomes. Interventions to promote sleep and mobilization in the MICU are gaining popularity, but feasible instruments to measure their effectiveness are lacking. Actigraphy may be useful for large-scale, continuous measurement of sleep and activity, but its feasibility in MICU patients has not been rigorously evaluated. OBJECTIVE: To evaluate the feasibility of continuous actigraphy measurement in consecutive MICU patients...
July 2017: American Journal of Critical Care: An Official Publication, American Association of Critical-Care Nurses
https://www.readbyqxmd.com/read/28661716/gene-by-activity-interactions-on-obesity-traits-of-six-year-old-new-zealand-european-children-a-children-of-scope-study
#9
Mohanraj Krishnan, Andrew N Shelling, Clare R Wall, Edwin A Mitchell, Rinki Murphy, Lesley M E McCowan, John M D Thompson
PURPOSE: The decline of physical activity in children is considered an important determinant to explain the rising rates of obesity. However, this risk may be augmented in children who are genetically susceptible to increased weight gain. We hypothesised that a sedentary lifestyle and moderate activity will interact with genetic loci, resulting in differential effects in relation to obesity risk. METHODS: We recruited 643 European children born to participants in the New Zealand based Screening for Pregnancy Endpoints (SCOPE) study...
June 29, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28656534/relationship-between-subjective-and-actigraphy-measured-sleep-in-237-patients-with-metastatic-colorectal-cancer
#10
Oxana Palesh, Karyn Haitz, Francis Lévi, Georg A Bjarnason, Carl Deguzman, Igbal Alizeh, Ayhan Ulusakarya, Mary Melissa Packer, Pasquale F Innominato
OBJECTIVE: Patients with cancers frequently experience sleep and circadian dysfunction. To date, only a few studies have used both a questionnaire and actigraphy for concomitant evaluation of sleep and circadian function in patients with cancer. We sought to evaluate objective sleep and circadian parameters in metastatic colon cancer (MCC) patients and their associations with symptoms and quality of life (QOL). METHODS: Patients reported subjective sleep problems on the EORTC QLQ-C30...
June 27, 2017: Quality of Life Research
https://www.readbyqxmd.com/read/28652716/can-we-improve-pain-and-sleep-in-elderly-individuals-with-transcranial-direct-current-stimulation-results-from-a-randomized-controlled-pilot-study
#11
Marie-Philippe Harvey, Dominique Lorrain, Marylie Martel, Kayla Bergeron-Vezina, Francis Houde, Mario Séguin, Guillaume Léonard
BACKGROUND: The prevalence of chronic pain and sleep disturbances substantially increases with age. Pharmacotherapy remains the primary treatment option for these health issues. However, side effects and drug interactions are difficult to control in elderly individuals. AIMS: The objective of this study was to assess the feasibility of conducting a randomized sham-controlled trial and to collect preliminary data on the efficacy of transcranial direct current stimulation (tDCS) to reduce pain and improve sleep in older adults suffering from chronic pain...
2017: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/28651371/sleep-and-physiological-dysregulation-a-closer-look-at-sleep-intraindividual-variability
#12
Bei Bei, Teresa E Seeman, Judith E Carroll, Joshua F Wiley
Study Objectives: Variable daily sleep (i.e., higher intraindividual variability; IIV) is associated with negative health consequences, but potential physiological mechanisms are poorly understood. This study examined the associations between sleep timing, duration, and quality IIV and physiological dysregulation, with diurnal cortisol trajectories as a proximal outcome, and allostatic load (AL) as a multi-system distal outcome. Methods: Participants are 436 adults (Mage±SD=54...
June 23, 2017: Sleep
https://www.readbyqxmd.com/read/28650674/variation-in-actigraphy-estimated-rest-activity-patterns-by-demographic-factors
#13
Jonathan A Mitchell, Mirja Quante, Suneeta Godbole, Peter James, J Aaron Hipp, Catherine R Marinac, Sara Mariani, Elizabeth M Cespedes Feliciano, Karen Glanz, Francine Laden, Rui Wang, Jia Weng, Susan Redline, Jacqueline Kerr
Rest-activity patterns provide an indication of circadian rhythmicity in the free-living setting. We aimed to describe the distributions of rest-activity patterns in a sample of adults and children across demographic variables. A sample of adults (N = 590) and children (N = 58) wore an actigraph on their nondominant wrist for 7 days and nights. We generated rest-activity patterns from cosinor analysis (MESOR, acrophase and magnitude) and nonparametric circadian rhythm analysis (IS: interdaily stability; IV: intradaily variability; L5: least active 5-hour period; M10: most active 10-hour period; and RA: relative amplitude)...
June 26, 2017: Chronobiology International
https://www.readbyqxmd.com/read/28649935/evidence-of-sub-optimal-sleep-in-adolescent-middle-eastern-academy-soccer-players-which-is-exacerbated-by-sleep-intermission-proximal-to-dawn
#14
Peter M Fowler, Darren J Paul, Gustavo Tomazoli, Abdulaziz Farooq, Richard Akenhead, Lee Taylor
The purpose was to assess sleep patterns, quantity and quality in adolescent (16.2 ± 1.2 yr) Middle Eastern academy soccer players (n = 20) and the influence of an intermission upon these characteristics. On a 17-day training camp (located one time zone west of home) including three discrete matches, sleep was assessed pre- (PRE) and post-match (POST) via wrist actigraphy. Retrospective actigraphy analysis identified sleep characteristics, including if players experienced a sleep intermission (YES) or not (NO) proximal to dawn, and bedtime (hh:mm), get-up time (hh:mm), time in bed (h), sleep duration (h) and sleep efficiency (%)...
June 25, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28644698/sleep-disturbance-after-hospitalization-and-critical-illness-a-systematic-review
#15
Marcus T Altman, Melissa P Knauert, Margaret A Pisani
BACKGROUND: Sleep disturbance during intensive care unit (ICU) admission is common and severe. Sleep disturbance has been observed in survivors of critical illness even after transfer out of the ICU. Not only is sleep important to overall health and well-being, but patients after critical illness are also in a physiologically vulnerable state. Understanding how sleep disturbance impacts recovery from critical illness after hospital discharge is therefore clinically meaningful. OBJECTIVE: This systematic review aimed to summarize studies that identify the prevalence of and risk factors for sleep disturbance after hospital discharge for critical illness survivors...
June 23, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28643350/habitual-sleep-and-kidney-function-in-chronic-kidney-disease-the-chronic-renal-insufficiency-cohort-study
#16
Kristen L Knutson, James Lash, Ana C Ricardo, James Herdegen, J D Thornton, Mahboob Rahman, Nicolas Turek, Janet Cohan, Lawrence J Appel, Lydia A Bazzano, Manjula K Tamura, Susan P Steigerwalt, Matthew R Weir, Eve Van Cauter
Physiological evidence suggests that sleep modulates kidney function. Our objective was to examine the cross-sectional association between kidney function and objectively-estimated habitual sleep duration, quality and timing in a cohort of patients with mild to moderate chronic kidney disease. This study involved two US clinical centers of the Chronic Renal Insufficiency Cohort (CRIC) study, including 432 participants in a CRIC ancillary sleep study. Habitual sleep duration, quality and timing were measured using wrist actigraphy for 5-7 days...
June 23, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28632088/the-association-of-daytime-maternal-napping-and-exercise-with-nighttime-sleep-in-first-time-mothers-between-3-and-6-months-postpartum
#17
Teresa A Lillis, Nancy A Hamilton, Sarah D Pressman, Christina S Khou
OBJECTIVE: This study investigated the relationship of daytime maternal napping, exercise, caffeine, and alcohol intake to objective and subjective sleep indices. PARTICIPANTS: Sixty healthy, nondepressed, first-time mothers between 3 and 6 months postpartum. METHODS: Seven consecutive days of online behavior diaries, sleep diaries, and wrist actigraphy, collecting Total Sleep Time (TST), Sleep Onset Latency (SOL), and Wake After Sleep Onset (WASO)...
October 19, 2016: Behavioral Sleep Medicine
https://www.readbyqxmd.com/read/28630378/randomised-controlled-trial-of-the-efficacy-of-a-blue-enriched-light-intervention-to-improve-alertness-and-performance-in-night-shift-workers
#18
Tracey L Sletten, Suzanne Ftouni, Christian L Nicholas, Michelle Magee, Ronald R Grunstein, Sally Ferguson, David J Kennaway, Darren O'Brien, Steven W Lockley, Shantha M W Rajaratnam
OBJECTIVES: Night workers often experience high levels of sleepiness due to misalignment of the sleep-wake cycle from the circadian pacemaker, in addition to acute and chronic sleep loss. Exposure to light, in particular short wavelength light, can improve alertness and neurobehavioural performance. This randomised controlled trial examined the efficacy of blue-enriched polychromatic light to improve alertness and neurobehavioural performance in night workers. DESIGN: Participants were 71 night shift workers (42 males; 32...
June 19, 2017: Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28627208/irisin-is-weakly-associated-with-usual-physical-activity-in-young-overweight-women
#19
Beatriz Tenorio, Teresa Jiménez, Gladys Barrera, Sandra Hirsch, Maria Pia De la Maza, Rodrigo Troncoso, María Belén Farias, Juan Manuel Rodríguez, Daniel Bunout
PURPOSE: To determine if irisin plasma levels are associated with regular physical activity, body composition and metabolic parameters in women subjected to calorie restriction. SUBJECTS AND METHODS: We studied 42 women aged 34 ± 13 years with a body mass index of 27.7 ± 1.8 kg/m2, who were subjected to a calorie restriction for three months. At baseline and at the end of the study, weight, waist and hip circumference, laboratory parameters, body composition by DEXA, resting and activity energy expenditure by indirect calorimetry and 72 hours actigraphy were measured...
June 5, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28619179/agreement-between-sleep-diary-and-actigraphy-in-a-highly-educated-brazilian-population
#20
Marcela Zambrim Campanini, Esther Lopez-Garcia, Fernando Rodríguez-Artalejo, Alberto Durán González, Selma Maffei Andrade, Arthur Eumann Mesas
OBJECTIVE: This study evaluated the agreement between a sleep diary and actigraphy on the assessment of sleep parameters among school teachers from Brazil. METHODS: A total of 163 teachers (66.3% women; aged 45 ± 9 years) filled out a sleep diary and wore a wrist actigraph device for seven consecutive days. Data were collected from August 2014 to March 2015 in Londrina, a large city in southern Brazil. Intraclass correlation coefficients (ICC) and Pearson correlation coefficients (r) were used to compare self-reported and actigraphic data...
July 2017: Sleep Medicine
keyword
keyword
68973
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"