Michael Grandner

Michael Grandner
The University of Arizona | UA · Department of Psychiatry

PhD MTR

About

383
Publications
55,298
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
10,823
Citations
Introduction
My research focuses on how sleep and sleep-related behaviors are related to cardiovascular disease, diabetes, obesity, neurobehavioral functioning, mental health, and longevity. Current studies involve population-level surveys, home-based assessments of sleep and health, and in-laboratory studies. For more information, see http://www.michaelgrandner.com.
Additional affiliations
July 2015 - present
The University of Arizona
Position
  • Professor (Assistant)
December 2012 - June 2015
University of Pennsylvania
Position
  • Instructor
January 2012 - June 2015
University of Pennsylvania
Position
  • Instructor
Education
July 2012 - May 2014
University of Pennsylvania
Field of study
  • Translational Research
July 2001 - June 2007
San Diego State University and University of California, San Diego
Field of study
  • Clinical Psychology
July 2001 - January 2005
San Diego State University
Field of study
  • Clinical Psychology

Publications

Publications (383)
Article
Sleep health is an important consideration for athletic performance. Athletes are at high risk of insufficient sleep duration, poor sleep quality, daytime sleepiness and fatigue, suboptimal sleep schedules, irregular sleep schedules, and sleep and circadian disorders. These issues likely have an impact on athletic performance via several domains. S...
Article
Introduction Multisensor sleep wearable devices have demonstrated utility for research and relative accuracy for discerning sleep-wake patterns at home and in the laboratory. Additional sensors and more complex scoring algorithms may improve the ability of wearables to assess sleep health. Methods Thirty-six healthy adults completed assessment whi...
Article
Objective To examine retrospectively whether access to a campus food pantry (CFP) is related to improvements in sleep, mental health, and physical health among college students in a public university system. Design Retrospective, cross-sectional study of student CFP users who completed an online survey in the summer of 2019. Setting Ten-campus Un...
Preprint
Full-text available
Human mood varies according to both endogenous and situational factors. Analyzing patterns of online media engagement can provide additional insights into a third dimension of mood potentially involving time-of-day factors. Using data collected through the online brain-training app, Lumosity, we report real-world trends in mood expression among 500...
Article
Full-text available
Study objectives: In most standardized approaches to cognitive behavioral therapy for insomnia (CBT-I), it is commonly the case that total wake time reduces substantially during sleep restriction, but self-reported total sleep time (TST) is minimally affected. By follow-up, however, TST increases by almost 1 hour on average. A secondary analysis w...
Article
Introduction: Disrupted sleep is associated with non-suicidal self-injury (NSSI) in young adults, but many specific features of sleep continuity and timing have yet to be examined. Additionally, the psychological mechanisms linking sleep to NSSI are unclear. The present study evaluated 14 sleep variables as classifiers of lifetime or recent NSSI a...
Article
Full-text available
Sufficient sleep with minimal interruption during the circadian/biological night supports daytime cognition and emotional regulation. Conversely, disrupted sleep involving significant nocturnal wakefulness leads to cognitive and behavioral dysregulation. Most studies to-date have examined how fragmented or insufficient sleep affects next-day functi...
Article
Full-text available
Objective: Blue light is a powerful environmental stimulus that can produce significant phase shifts in the circadian rhythm of melatonin and sleep propensity as well as acute effects on alertness of neurobehavioral performance. Here, we undertook an expansion and reanalysis of our previously published findings to examine the effect of acute blue...
Article
Full-text available
Introduction: Habitual insufficient sleep may contribute to cardiometabolic disease in the United States, particularly among racial and ethnic minorities. However, there is mixed evidence on secular trends in U.S. sleep duration. Therefore, this study investigated annual changes in sleep duration, including variations across demographics and how sl...
Article
Full-text available
Cognitive behavioral therapy for insomnia (CBT-I) has been shown to be efficacious and now is considered the first-line treatment for insomnia for both uncomplicated insomnia and insomnia that occurs comorbidly with other chronic disorders (comorbid insomnia). The purposes of this review are to provide a comprehensive summary of the efficacy data (...
Article
The majority of sleep research has focused on deleterious health outcomes, with little attention to positive sequels. A systematic review of the literature regarding sleep duration and/or sleep quality in relation to mental toughness and resilience amongst non-clinical, healthy populations was completed. Eight databases and selected sources for gre...
Article
Full-text available
Objective Habitual insufficient sleep may contribute to cardiometabolic disease in the United States, particularly among racial and ethnic minorities. However, there is mixed evidence on secular trends in U.S. sleep duration. Study Design Cross-sectional data from 413,417 individuals were acquired from the National Health Interview Survey from 200...
Article
Lenses that filter short-wavelength (“blue”) light are commercially marketed to improve sleep and circadian health. Despite their widespread use, minimal data are available regarding their comparative efficacy in curtailing blue light exposure while maintaining visibility. Fifty commercial lenses were evaluated using five light sources: a blue LED...
Chapter
Sleep and pain are strongly connected. Sleep disturbance is reported by 67%–88% of patients with chronic pain, and 50% of patients with insomnia suffer from chronic pain. Patients with chronic pain may have difficulty implementing strategies of traditional CBT-I, such as stimulus control or sleep restriction, due to physical limitations (e.g., unab...
Chapter
Patients with psychotic disorders show profound disturbances in sleep, including insomnia, nightmares, and unstable sleep/wake rhythms. While emerging research shows that disrupted sleep reduces the quality of life, increases suicide risk, and provokes psychotic symptoms, patients often lack access to evidence-based behavioral sleep medicine treatm...
Chapter
CBT-I is an effective and efficacious treatment modality. However, many patients come to clinic having previously failed CBT-I. This chapter addresses the possible reasons why CBT-I could fail, how to approach patients who have previously failed CBT-I, and how to address the problems often seen in these patients. There are a number of reasons that...
Preprint
Study Objectives: Wearable sleep technology has rapidly expanded across the consumer market due to advances in technology and increased interest in personalized sleep assessment to improve health and performance. In this study, we tested the performance of a novel device, alongside other commercial wearables, against in-lab and at-home polysomnogra...
Article
Objectives Prior work suggests that short sleep and total sleep deprivation are associated with reduced trait Emotional Intelligence (trait EI) but not reduced ability Emotional Intelligence (ability EI). To expand this knowledge base, we investigated the role of habitual sleep quality on trait and ability EI above and beyond the known effects of r...
Article
Sleep is entwined across many physiologic processes in the brain and periphery, thereby exerting tremendous influence on our well-being. Yet sleep exists in a social-environmental context. Contextualizing sleep health with respect to its determinants—from individual- to societal-level factors—would enable neuroscientists to more effectively transla...
Article
The COVID-19 pandemic has affected the sleep and dreams of many individuals. Some have experienced improvements, while others have had more complaints. The changes to daily life such as working from home and spending more time indoors in confinement may have disturbed the circadian rhythms of some individuals. There were many reports of a shift tow...
Article
Objective: Risky driving behaviors, such as texting while driving, are common among young adults and increase risk of traffic accidents and injuries. We examine the relationship between poor sleep and risky driving behaviors among college students as potential targets for traffic injury prevention. Methods: Data for this study were obtained from a...
Article
Study objectives: Prescription use and misuse of opioids are linked to greater sleep disturbance. However, there are limited data on the prevalence of sedative-hypnotic medication use among persons who use opioids. Therefore, this study examined whether past year sedative-hypnotic use among persons who used/misused opioids was higher than among in...
Article
Full-text available
Objective: Prior studies indicate nocturnal wakefulness is associated with suicide, while morning wakefulness is linked to reduced suicidal ideation. These relationships, however, may be confounded by sociodemographic factors. Therefore, this study investigated whether timing of wakefulness was associated with suicidal ideation in a nationally repr...
Article
Full-text available
Background Existing studies show that consuming food consistent with one’s culture reduces cardiometabolic risk. However, few studies have assessed whether these dietary choices influence sleep health. Accordingly, this study assessed how Mexican food consumption by individuals of Mexican descent residing at the US-Mexico border, was associated wit...
Article
Nightmares are often associated with psychiatric disorders and acute stress. This study explores how the COVID‐19 pandemic may have influenced the content of nightmares. A sample of N = 419 US adults completed online surveys about sleep and COVID‐19 experiences. Participants were asked about the degree to which they agreed with statements linking g...
Article
Female menstrual health and its relationship with sleep is an understudied subject. The aim of this investigation was to determine the association between the two in a community sample. Data were obtained from n = 579 menstruating females who participated in the Sleep and Health Activity, Diet, Environment, and Socialization (SHADES) study, a commu...
Article
Full-text available
Movement-based sleep-wake detection devices (i.e., actigraphy devices) were first developed in the early 1970s and have repeatedly been validated against polysomnography, which is considered the “gold-standard” of sleep measurement. Indeed, they have become important tools for objectively inferring sleep in free-living conditions. Standard actigrap...
Article
Background Previous research has shown that after one month of full dose nightly treatment with zolpidem (priming), subjects with chronic insomnia (CI) switched to intermittent dosing with medication and placebos were able to maintain their treatment responses. This approach to maintenance therapy is referred to as partial reinforcement. The presen...
Article
Background: Prior research indicates substance misuse is a prominent risk behavior among collegiate athletes. The authors sought to supplement this literature by expanding the number of substances typically examined and include mental health symptoms covariates related to both sleep and substance use. Methods: We assessed substance use with the fol...
Article
Impacts of travel distance and travel direction on back-to-back games in the National Basketball Association (NBA) Jonathan Charest1, Charles H. Samuels1, Celyne H. Bastien2, Doug Lawson1 & Michael A. Grandner3 1Centre for Sleep & Human Performance, Calgary, Alberta, Canada 2School of Psychology, Université Laval, Québec City, Québec Canada 3Depar...
Chapter
Sleep is a core component of human physiology, supporting physical, mental, and emotional health. Unfortunately, insufficient sleep and insomnia are increasingly common problems both in the United States and around the world. Poor sleep is strongly associated with diabetes, obesity, and other cardiometabolic diseases. Pro-inflammatory states associ...
Article
Previous studies have shown individuals with evening chronotype to have a greater likelihood for depression (self-reported and clinical ratings), especially in young adults. However, the mechanisms for this relationship remain unknown. Low levels of social support may be a plausible mechanism: young adults with evening chronotypes are awake when ot...
Article
Introduction: Population-level objective estimates of changes in health metrics over the course of the COVID-19 pandemic are sparse. This study evaluated change in resting heart rate (RHR) determined by optical plethysmography and relationships to changes in other lifestyle health behaviors (sleep and activity). Methods: Data were obtained from N=1...
Article
Background: Epidemiological evidence of short sleep’s (<6 hours) association with negative cardiometabolic health outcomes continues to mount; yet, the complex relationship between sleep and health is still not well-understood. Sleep problems, such as short sleep (SS) and insomnia (IN), are often analyzed as a singular construct at the population l...
Article
Military personnel rely on caffeinated products such as coffee or energy drinks (ED) to maintain a maximal level of vigilance and performance under sleep-deprived and combat situations. While chronic caffeine intake is associated with decreased sleep duration and non-restful sleep in the general population, these relationships are understudied in t...
Article
According to the "3P model" of insomnia, the variable that mediates the transition from acute insomnia (AI) to chronic insomnia is "sleep extension" (the behavioural tendency to expand sleep opportunity to compensate for sleep loss). In the present analysis, we sought to evaluate how time in bed (TIB) varies relative to the new onset of AI and chro...
Article
Full-text available
While there is an extensive literature on predisposing, precipitating, coping and perpetuating factors in those with chronic insomnia, very little work has been undertaken to evaluate these factors over the early developmental course of insomnia. The present aim was to determine whether several hypothesized factors in each domain (predisposing, pre...
Article
Objective/background: Illness severity and resultant dysfunction are often linearly related and tightly coupled (concordant). Some percentage of individuals, however, exhibit discordant associations (high illness severity and low dysfunction [HL] or low illness severity and high dysfunction [LH]). In the present study, a sample of subjects with in...
Article
Introduction: Previous studies have linked sleep to risk of diabetes and obesity, at least partially via alterations in food intake. Diabetes and obesity are common among Hispanics/Latinos, and studies are needed to better clarify the role of sleep in health among this group. Utilizing the revised TFEQ-R-18, this study will examine whether eating b...
Article
Full-text available
Despite the high prevalence of subclinical sleep disturbances, existing treatments are either potent prescription medications or over-the-counter supplements with minimal scientific support and numerous side effects. However, preliminary evidence shows that polyphenols such as rosmarinic acid and epigallocatechin gallate can support healthy sleep w...
Article
Full-text available
Previous research has shown that student athletes are more likely to be involved in a physical altercation or be a victim of verbal, physical and/or sexual abuse than student non-athletes, which can have long-lasting negative effects on mood, behavior and quality of life. In addition, among college students, sleep difficulties are ubiquitous and ma...
Article
Study objectives We examined the most important correlates to sleep duration and efficiency from a comprehensive array of multilevel factors. Methods Baseline data from a cohort of 216 Black/African American smokers aged 40-65 years were examined. The binary outcomes of healthy sleep duration (6-8 h/night) and efficiency (≥85%) were ascertained fr...
Article
The COVID-19 pandemic has resulted in societal-level changes to sleep and other behavioral patterns. Objective data would allow for a greater understanding of sleep-related changes at the population level. About 163,524 active Fitbit users from 6 major US cities contributed data, representing areas particularly hard-hit by the pandemic (Chicago, Ho...
Article
Study objectives.: Z-drugs (eszopiclone, zolpidem, and zaleplon) are commonly used for insomnia, but are also associated with suicide risk. However, it is unclear if this association is unique to Z-drugs. Therefore, the present study estimated the associations between multiple prescription insomnia medications and suicidal thoughts and behaviors....
Article
We conducted a meta-analysis of papers published over the past half-century (1964-2017) that quantified the phase-shifting effects of timed light exposure on rodent locomotor rhythms. Descriptive statistics were tabulated in order to explore the extent to which these studies were generalizable across species, sex, age, circadian timing, and light s...
Article
This study aimed to determine which dietary factors were associated with habitual sleep duration in pre/peri- and post-menopausal women. Data from the 2007–2008 National Health and Nutrition Examination Survey were used ( N = 1,783). Habitual sleep duration was categorized as very short (<5 h), short (5–6 h), normal (7–8 h), and long (≥9 h). Diet a...
Article
Full-text available
Emerging adulthood (18–25 years) represents a window of opportunity to modify the trajectory of cardiometabolic disease risk into older adulthood. Not known is the extent to which rest-activity rhythms (RAR) may be related to biomarkers of cardiometabolic health in this population. In this cross-sectional, observational study, 52 healthy emerging a...
Article
Full-text available
“Why treat insomnia?” This question grows out of the perspective that insomnia is a symptom that should only receive targeted treatment when temporary relief is needed or until more comprehensive gains may be achieved with therapy for the parent or precipitating medical or psychiatric disorders. This perspective, however, is untenable given recent...
Article
Background Poor sleep health, including sleep deficiency and sleep disturbance, is common among employed adults in the U.S. and is associated with undesirable workplace outcomes. Adoption of workplace health promotion programs (WHPPs) is increasing, yet few programs aim to reduce fatigue or improve sleep among employees. Objective We analyzed data...
Article
Full-text available
ABSTRACT Elite athletes are particularly susceptible to sleep inadequacies, characterised by habitual short sleep (<7 hours/night) and poor sleep quality (eg, sleep fragmentation). Athletic performance is reduced by a night or more without sleep, but the influence on performance of partial sleep restriction over 1–3 nights, a more real-world scenar...
Article
Objective Insomnia is a clinically verified nicotine withdrawal symptom. As nicotine is a stimulant, it is plausible that smoking at night could disturb sleep more than smoking at earlier times of the day, but this remains empirically unclear. This study examined smoking status and its associations with insomnia severity and sleep duration while co...
Chapter
Insomnia is a disorder with significant psychiatric comorbidity. This chapter provides an overview of how to assess and treat insomnia in patients with comorbid psychiatric disorders using cognitive behavioral interventions. First, the authors review the theoretical framework for the behavioral and cognitive perspectives regarding the etiology of c...
Article
Sleep disparities exist among Hispanics/Latinos, although little work has characterized individuals at the United States (US)-Mexico border, particularly as it relates to acculturation. This study examined the association of Anglo and Mexican acculturation to various facets of sleep health among those of Mexican descent at the US-Mexico border. Dat...
Article
Objectives: The objective of the present study is to identify which underlying beliefs about the impact of sleep on health may motivate change in sleep behavior. Design: A cross-sectional study conducted between 2012 and 2014. Setting: Data were from the Sleep and Healthy Activity, Diet, Environment, and Socialization (SHADES) study conducted...
Article
Full-text available
Purpose of review: In this current review, we describe the benefits of community-based and "precision and personalized population health" (P3H) approaches to assessing and addressing sleep health problems and sleep-related cardiovascular diseases (CVD) among vulnerable populations such as racial/ethnic minorities, the elderly, and the socioeconomi...
Article
None: Disrupted sleep and nocturnal wakefulness are evidence-based risk factors for suicidal thoughts and behaviors. We present a suicide attempt following a rapid increase in nocturnal wakefulness. This case illustrates how nocturnal wakefulness may drive suicide risk through circadian misalignment.
Article
Study Objectives Nocturnal wakefulness is a risk factor for suicide and suicidal ideation in clinical populations. However, these results have not been demonstrated in general community samples or compared to sleep duration or sleep quality. The present study explored how the timing of wakefulness was associated with suicidal ideation for weekdays...
Article
Objectives Short and long sleep duration are associated with poor health outcomes and are most prevalent among racial/ethnic minorities. Few studies have investigated the intersection of other sociodemographic characteristics with race/ethnicity on sleep duration prevalence. Design Longitudinal retrospective analysis of continental U.S. cohort, th...
Article
Introduction Sleep difficulties, such as insomnia, are highly prevalent in individuals with Post-Traumatic Stress Disorder (PTSD). However, sleep deprivation can also increase emotional reactivity to positive (as well as negative) stimuli. While the effects of sleep loss on emotional perception healthy individuals has been documented, it remains un...
Article
Introduction Previous studies have documented sleep disparities in the general population. Given the increased interest in sleep among athletes, and the degree to which demographics and schedules among athletes differ from the general population, this analysis aims to examine the relationship between race/ethnicity and sleep duration and symptoms a...
Article
Full-text available
Introduction Public health efforts aimed at reducing the decline in habitual sleep duration have not been successful. It is possible that this decline is differentially experienced relative to individuals’ mental health status. This would further support the need to focus on mental health as a strategy for improving sleep in the general population....
Article
Introduction There has been a rise in workplace health promotion programs (WHPP)’s in the U.S., designed to improve a variety of employee health behaviors such as exercise and nutrition. Yet, relatively few focus on the third pillar of health: Sleep. Methods The CDC collected data from a nationally-representative cohort of companies in 2017. Parti...
Article
Introduction Sleep disturbances are a common problem among cancer survivors. Also, cancer patients can have altered circadian rhythms and these changes can continue to affect the patient long after the conclusion of their treatment. This analysis aims to investigate how the sleep and wake times of cancer survivors differ from the rest of the popula...
Conference Paper
Introduction Blue wavelength light is an effective treatment for delayed sleep phase syndrome, seasonal affective disorder and bipolar depression. The role of blue light in regulating melatonin production has been extensively studied, but other potential neurophysiological effects remain poorly understood. Some studies have suggested that daily blu...
Article
Introduction Daytime sleepiness is associated with impaired functioning and well-being. Those with more sleepiness may turn to illicit substances to overcome these problems. The present study examined whether community-level daytime sleepiness is associated with the likelihood of drug use. Methods Data were pulled from the Sleep and Healthy Activi...
Article
Introduction Previous studies have shown that poor sleep is associated with alcohol use, smoking, and other substance use, especially among young adults. Yet, very little is known about hallucinogen use. Methods Data from the 2011-2014 National College Health Assessment were used (N=113,749), representing a wide range of students across the US. Ha...
Article
Introduction Daytime sleepiness impacts performance and well-being. The present study used validated measures to explore associations of community-level daytime sleepiness with sleep health, preferred sleep phase, physical inactivity, and overall health. Methods Data were from the Sleep and Healthy Activity, Diet, Environment, and Socialization (S...