Nicole K. Johnson, B.S.

Nicole K. Johnson, B.S.

Chicago, IL

Illinois Institute of Technology, Department of Psychology

Clinical Psychology PhD Student

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Thank you for interest in and support of my research! In future studies, I would like to incorporate measures of stress, including chronic and daily measures in understanding sleep deprivation and problematic eating. Another student in my research lab specifically researches stress and disordered eating, and we are designing a simple survey study to understand some of these associations between sleep, stress, and disordered eating. Thank you for sharing your story. I'm sorry you've had issues with sleep deprivation, stress, and weight changes. Your comment brings up a great point. Often there is a gap between research and clinical practice. To bridge that gap in terms of my project's page, I'll post clinical resources in a lab note this week. I hope you check them out. Again, thank you for your support and for your comment. Message me or post in the discussion with questions/feedback!
Jul 08, 2018
How does sleep deprivation impact problematic eating?
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(3) You are correct. While looking at multiple levels of sleep hours might provide interesting information, we would have to increase our sample size. Doing so would increase the amount of funding we need, and it would take longer to complete this research. This study is my master's research project, and finishing in a timely manner is important for me to stay on track in earning my degree. Thank you for your questions and feedback!! Thank you very much for your support and donation! Please post in the discussion with more comments. Cheers, Nicole https://www.researchgate.net/publication/271235883_Brief_Communication_Sleep_Curtailment_in_Healthy_Young_Men_Is_Associated_with_Decreased_Leptin_Levels_Elevated_Ghrelin_Levels_and_Increased_Hunger_and_Appetite https://www.researchgate.net/publication/261735932_The_Important_Role_of_Sleep_in_Metabolism https://www.researchgate.net/publication/310576863_The_effects_of_partial_sleep_restriction_and_altered_sleep_timing_on_appetite_and_food_reward https://www.researchgate.net/publication/284176794_Recommended_Amount_of_Sleep_for_a_Healthy_Adult_A_Joint_Consensus_Statement_of_the_American_Academy_of_Sleep_Medicine_and_Sleep_Research_Society
Jul 08, 2018
How does sleep deprivation impact problematic eating?
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(2) "Participants will be randomly assigned to one of two sleep conditions: sleep-deprived or habitual-sleep. For the sleep-deprived condition, sleep intervals will be approximately 4 hours from about 01:00 to 05:00, and for the habitual-sleep condition, sleep intervals will be approximately 8 hours from about 23:00 to 07:00. The sleep duration for participants in the habitual-sleep condition will equal each participant’s self-reported average sleep duration for the past month, as measured by the PSQI (Pittsburgh Sleep Quality Index). The sleep duration for participants in the sleep-deprived condition will equal 50% of each participant’s self-reported average sleep duration for the past month. Participants in both conditions will be instructed to fast 12 hours (from 21:00 to 09:00) from eating or drinking anything but water before the morning lab visit. Automated text-messages will remind participants of the sleep and fasting instructions." 8 hours is considered the approximate for habitual sleep duration because the majority of sleep experimental studies that I reviewed use 7-9 hours as the control condition. This is also based off of American Academy of Sleep Medicine and Sleep Research Society's recommendations of sleep duration to promote "optimal health". They recommend 7+ hours a night. The final link is for their article documenting this recommendation. As for the sleep-deprived condition, studies have shown that less than 5 hours of sleep can result in negative health outcomes, including increased food intake, weight gain, and metabolic dysregulation. Therefore, we expect to find meaningful and statistical differences between about 4 hours and 8 hours of sleep.
Jul 08, 2018
How does sleep deprivation impact problematic eating?
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(1) Hi Nicholas, Sorry for the delay in responding to your question! Our variable level choice was based on previous sleep deprivation experimental studies. See below to links to studies that influenced our methods. The Spiegel et al. (2004) study is one of the first studies to look at sleep deprivation's effect on appetite, and the second article is a review of associations between sleep factors, appetite, and metabolic factors. Similar to the third study below (McNeil et al., 2017), we will use our participants' baseline reports of the the sleep duration to help determine the exact number of hours they must sleep. Here is an excerpt from a proposal of our study detailing that aspect of the methods,
Jul 08, 2018
How does sleep deprivation impact problematic eating?
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Hi Nicholas, Great question! I posted a lengthy reply to your comment about an hour ago, and it isn't showing up online. When I have time this week, I'll send another reply!! Thank you
Jul 04, 2018
How does sleep deprivation impact problematic eating?
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Thanks Jon!! Thank you so much for your donation and support! You know all too well how stressful research can be. I'm excited to have you involved!
Jun 25, 2018
How does sleep deprivation impact problematic eating?
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Aww thank you Grandma!! I couldn't have done it without your support :) I'm glad you're getting notifications about the project!!
Jun 21, 2018
How does sleep deprivation impact problematic eating?
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Thanks for your support mom!! I'm excited to have you involved!!
Jun 07, 2018
How does sleep deprivation impact problematic eating?
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