SHAWN YOUNGSTEDT

Summary

Affiliation: University of South Carolina
Country: USA

Publications

  1. ncbi request reprint Illumination of upper and middle visual fields produces equivalent suppression of melatonin in older volunteers
    Julian S Smith
    The Sam and Rose Stein Institute for Research on Aging, Department of Psychiatry, University of California, San Diego, La Jolla 92093 0667, USA
    Chronobiol Int 19:883-91. 2002
  2. ncbi request reprint Ceiling and floor effects in sleep research
    Shawn D Youngstedt
    Department of Psychiatry and Sam and Rose, Stein Institute for Research on Aging, University of California, San Diego, California 92093 0667, USA
    Sleep Med Rev 7:351-65. 2003
  3. ncbi request reprint Effects of exercise on sleep
    Shawn D Youngstedt
    Department of Exercise Science, Norman J Arnold School of Public Health, University of South Carolina, 1300 Wheat Street, Columbia, SC 29208, USA
    Clin Sports Med 24:355-65, xi. 2005
  4. pmc Does bright light have an anxiolytic effect? - an open trial
    Shawn D Youngstedt
    Department of Exercise Science, Norman J, Arnold School of Public Health University of South Carolina, Columbia, SC 29208 USA
    BMC Psychiatry 7:62. 2007
  5. pmc Chronic moderate sleep restriction in older long sleepers and older average duration sleepers: a randomized controlled trial
    Shawn D Youngstedt
    Department of Exercise Science, University of South Carolina, Columbia, SC, USA
    Contemp Clin Trials 36:175-86. 2013
  6. pmc Efficacy of light therapy for perinatal depression: a review
    Shannon K Crowley
    Department of Exercise Science, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA
    J Physiol Anthropol 31:15. 2012
  7. doi request reprint Bright light treatment for high-anxious young adults: a randomized controlled pilot study
    Shawn D Youngstedt
    Department of Exercise Science, Arnold School of Public Health, University of South Carolina, 921 Assembly Street, Columbia, SC 29208, USA
    Depress Anxiety 28:324-32. 2011
  8. pmc Tolerance of chronic 90-minute time-in-bed restriction in older long sleepers
    Shawn D Youngstedt
    Department of Exercise Science, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA
    Sleep 32:1467-79. 2009
  9. ncbi request reprint Long sleep and mortality: rationale for sleep restriction
    Shawn D Youngstedt
    Department of Psychiatry and Sam and Rose Stein Institute for Research on Aging, University of California, San Diego, Mail Code 0667, 9500 Gilman Dr, La Jolla, CA 92093, USA
    Sleep Med Rev 8:159-74. 2004
  10. pmc Circadian rhythms of psychomotor vigilance, mood, and sleepiness in the ultra-short sleep/wake protocol
    Christopher E Kline
    Department of Exercise Science, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina 29208, USA
    Chronobiol Int 27:161-80. 2010

Research Grants

  1. Preventing Risks of Long Sleep
    SHAWN YOUNGSTEDT; Fiscal Year: 2005
  2. Preventing Risks of Long Sleep
    SHAWN YOUNGSTEDT; Fiscal Year: 2003
  3. Preventing Risks of Long Sleep
    SHAWN YOUNGSTEDT; Fiscal Year: 2004
  4. Preventing Risks of Long Sleep
    SHAWN YOUNGSTEDT; Fiscal Year: 2004

Collaborators

Detail Information

Publications21

  1. ncbi request reprint Illumination of upper and middle visual fields produces equivalent suppression of melatonin in older volunteers
    Julian S Smith
    The Sam and Rose Stein Institute for Research on Aging, Department of Psychiatry, University of California, San Diego, La Jolla 92093 0667, USA
    Chronobiol Int 19:883-91. 2002
    ..Clinical comparative testing would be valuable. In addition, this study demonstrates that significant suppression of melatonin may be achieved through the use of bright light in healthy older volunteers...
  2. ncbi request reprint Ceiling and floor effects in sleep research
    Shawn D Youngstedt
    Department of Psychiatry and Sam and Rose, Stein Institute for Research on Aging, University of California, San Diego, California 92093 0667, USA
    Sleep Med Rev 7:351-65. 2003
    ..The results show powerful CF influences on sleep responses to hypnotics and exercise and suggest a need for comparing these treatments in poor sleepers...
  3. ncbi request reprint Effects of exercise on sleep
    Shawn D Youngstedt
    Department of Exercise Science, Norman J Arnold School of Public Health, University of South Carolina, 1300 Wheat Street, Columbia, SC 29208, USA
    Clin Sports Med 24:355-65, xi. 2005
    ..Other behavioral/cognitive treatments are more effective for chronic insomnia treatment, but difficult and costly to deliver. By contrast, exercise could be a healthy, safe, inexpensive, and simple means of improving sleep...
  4. pmc Does bright light have an anxiolytic effect? - an open trial
    Shawn D Youngstedt
    Department of Exercise Science, Norman J, Arnold School of Public Health University of South Carolina, Columbia, SC 29208 USA
    BMC Psychiatry 7:62. 2007
    ..The aim of this open trial was to examine the influence of acute bright light exposure on anxiety in older and young adults...
  5. pmc Chronic moderate sleep restriction in older long sleepers and older average duration sleepers: a randomized controlled trial
    Shawn D Youngstedt
    Department of Exercise Science, University of South Carolina, Columbia, SC, USA
    Contemp Clin Trials 36:175-86. 2013
    ..Sleep will be assessed with actigraphy and a diary. Measures will include glucose tolerance, sleepiness, depressive symptoms, quality of life, cognitive performance, incidence of illness or accident, and inflammation...
  6. pmc Efficacy of light therapy for perinatal depression: a review
    Shannon K Crowley
    Department of Exercise Science, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA
    J Physiol Anthropol 31:15. 2012
    ....
  7. doi request reprint Bright light treatment for high-anxious young adults: a randomized controlled pilot study
    Shawn D Youngstedt
    Department of Exercise Science, Arnold School of Public Health, University of South Carolina, 921 Assembly Street, Columbia, SC 29208, USA
    Depress Anxiety 28:324-32. 2011
    ..Available treatments for anxiety have limitations and/or side effects. The aim of this study was to examine the influence of bright light exposure as a treatment in high-anxious young adults...
  8. pmc Tolerance of chronic 90-minute time-in-bed restriction in older long sleepers
    Shawn D Youngstedt
    Department of Exercise Science, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA
    Sleep 32:1467-79. 2009
    ..To examine the influence of chronic time-in-bed (TIB) restriction on selected health-related outcome variables in older long sleepers...
  9. ncbi request reprint Long sleep and mortality: rationale for sleep restriction
    Shawn D Youngstedt
    Department of Psychiatry and Sam and Rose Stein Institute for Research on Aging, University of California, San Diego, Mail Code 0667, 9500 Gilman Dr, La Jolla, CA 92093, USA
    Sleep Med Rev 8:159-74. 2004
    ..Sleep restriction may be most beneficial for older adults, who tend to spend excessive time in bed and have more sleep fragmentation compared with young adults...
  10. pmc Circadian rhythms of psychomotor vigilance, mood, and sleepiness in the ultra-short sleep/wake protocol
    Christopher E Kline
    Department of Exercise Science, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina 29208, USA
    Chronobiol Int 27:161-80. 2010
    ..However, neither sleepiness nor performance was worse on the second day of observation compared to the first day. These data provide further support for the use of the ultra-short sleep/wake protocol for measurement of circadian rhythms...
  11. pmc No effect of 8-week time in bed restriction on glucose tolerance in older long sleepers
    Mark R Zielinski
    Department of Exercise Science, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA
    J Sleep Res 17:412-9. 2008
    ..These results suggest that healthy older long sleepers can tolerate 8 weeks of moderate TIB restriction without impairments in glucose tolerance or insulin sensitivity...
  12. ncbi request reprint Circadian variation in swim performance
    Christopher E Kline
    Dept of Exercise Science, Arnold School of Public Health, Univ of South Carolina, 1300 Wheat St, Columbia, SC 29208, USA
    J Appl Physiol 102:641-9. 2007
    ..Mean swim performance was 169.5 s; circadian variation from peak to worst performance was 5.8 s. These data suggest a circadian rhythm in athletic performance independent of environmental and behavioral masking effects...
  13. pmc Circadian disruption, Per3, and human cytokine secretion
    Jaclyn Guess
    Department of Epidemiology and Biostatistics, Cancer Prevention and Control Program, University of South Carolina, 915 Greene Street, Columbia, SC 29208, USA
    Integr Cancer Ther 8:329-36. 2009
    ..Biological processes linking circadian disruption with cancer remain to be elucidated. Increased inflammatory cytokine secretion may play a role...
  14. ncbi request reprint No association of 6-sulfatoxymelatonin with in-bed 60-Hz magnetic field exposure or illumination level among older adults
    Shawn D Youngstedt
    Department of Psychiatry, University of California at San Diego, La Jolla, California, 92093, USA
    Environ Res 89:201-9. 2002
    ..Illumination acrophase and amplitude were significantly associated with aMT6s acrophase. These data suggest no influence of nocturnal environmental MF exposure on aMT6s excretion in older adults...
  15. ncbi request reprint Actigraphy suggests age-related differences in napping and nocturnal sleep
    In Young Yoon
    Department of Psychiatry and Sam and Rose Stein, Institute for Research on Aging, University of California, San Diego, CA 92093 0667, USA
    J Sleep Res 12:87-93. 2003
    ..Maintaining alertness during the evening (e.g. by bright light exposure or moderate exercise) would be a possible approach to delay wake-up times in older adults...
  16. ncbi request reprint No association of sleep with total daily physical activity in normal sleepers
    Shawn D Youngstedt
    Department of Psychiatry, Sam and Rose Stein Institute for Research on Aging, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093 0667, USA
    Physiol Behav 78:395-401. 2003
    ..These results fail to support epidemiologic data on the value of exercise for sleep, but are consistent with experimental evidence showing only modest effects of exercise on sleep...
  17. ncbi request reprint Melatonin excretion with affect disorders over age 60
    Daniel F Kripke
    Department of Psychiatry, University of California, San Diego, La Jolla, CA 92093 0667, USA
    Psychiatry Res 118:47-54. 2003
    ..These results are only weakly consistent with a photoperiodic hypothesis of depression...
  18. ncbi request reprint Age-related changes of circadian rhythms and sleep-wake cycles
    In Young Yoon
    Department of Psychiatry and Sam and Rose Stein Institute for Research on Aging, University of California at San Diego, La Jolla 92093, USA
    J Am Geriatr Soc 51:1085-91. 2003
    ..To compare relationships between the sleep-wake cycle and endogenous circadian rhythms in young and older adults and to examine correlates between evening naps and circadian rhythms in older adults...
  19. ncbi request reprint PRC bisection tests
    Daniel F Kripke
    Department of Psychiatry, University of California, San Diego, California 92093 0667, USA
    Chronobiol Int 20:1117-23. 2003
    ..Also, the bisection procedure yields an estimate of the inflection point of the phase response curve. A method is given to estimate the power of the PRC bisection test...
  20. ncbi request reprint Circadian phase-delaying effects of bright light alone and combined with exercise in humans
    Shawn D Youngstedt
    Department of Psychiatry, University of California, San Diego, La Jolla, California 92093 0667, USA
    Am J Physiol Regul Integr Comp Physiol 282:R259-66. 2002
    ..Within the limited exercise and light parameters of this study, the results suggest that exercise does not reliably modulate phase-shifting effects of late night bright light in humans...

Research Grants4

  1. Preventing Risks of Long Sleep
    SHAWN YOUNGSTEDT; Fiscal Year: 2005
    ..Benefits and risks will be assessed by examining changes in sleepiness, depression, quality-of-life, neurobehavioral performance, glucose tolerance, and actigraphic and subjective sleep. ..
  2. Preventing Risks of Long Sleep
    SHAWN YOUNGSTEDT; Fiscal Year: 2003
    ..Benefits and risks will be assessed by examining changes in sleepiness, depression, quality-of-life, neurobehavioral performance, glucose tolerance, and actigraphic and subjective sleep. ..
  3. Preventing Risks of Long Sleep
    SHAWN YOUNGSTEDT; Fiscal Year: 2004
    ..Benefits and risks will be assessed by examining changes in sleepiness, depression, quality-of-life, neurobehavioral performance, glucose tolerance, and actigraphic and subjective sleep. ..
  4. Preventing Risks of Long Sleep
    SHAWN YOUNGSTEDT; Fiscal Year: 2004
    ..Benefits and risks will be assessed by examining changes in sleepiness, depression, quality-of-life, neurobehavioral performance, glucose tolerance, and actigraphic and subjective sleep. ..