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The purpose of this study is to assess the effectiveness and safety of the theanine for stress relief formulation versus placebo on stress, burnout component, mood and sleep
This is a double-blind, randomized, placebo-controlled study to evaluate the effects of a theanine for stress relief formulation on stress, burnout component, mood, and sleep in individuals who report occasional moderate or high levels of stress.
Participants will be asked to completed assessments and questionnaires as well as obtain a self saliva sample.
The primary objective is to evaluate the median change in response to the theanine formulation on stress from completed questionnaires, Perceived Stress Scale-14 (PSS-14) and the State Trait Anxiety Inventory (STAI) for stress.
The secondary objective is to evaluate the median change in response to the theanine formulation on stress from completed questionnaires, Depression, Anxiety and Stress Scale (DASS-21), Leeds Sleep Evaluation Questionnaires (LSEQ), Maslach Burnout Inventory General Survey (MBI-GS) and Short Form 36 Health Survey and Cortisol levels.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Active | Active Comparator | Dietary Supplement: Theanine for stress relief formulation |
|
| Placebo | Placebo Comparator | Placebo tablet |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Theanine for stress relief formulation | Dietary Supplement | Theanine for stress relief formulation tablet |
|
| Measure | Description | Time Frame |
|---|---|---|
| Perceived Stress Scale (PSS-14) | Assessment of the mean change in the results of the Perceived Stress Scale (PSS-14) from baseline. There are 14 items and total scores range from 0-56. The lower the score indicates a lower level of stress. | 28 days |
| State-Trait Anxiety Inventory (STAI) | Assessment of the mean change in the results of the State-Trait Anxiety Inventory (STAI) from baseline. This is a 20-item questionnaire which includes separate measures of state and trait anxiety. The total scores range from 0-63. The lower the score indicates a better outcome. | 28 days |
| Measure | Description | Time Frame |
|---|---|---|
| Depression, Anxiety and Stress Scale-21 (DASS-21) | Assessment of the mean change in the results of Depression, Anxiety and Stress Scale-21 (DASS-21) from baseline. There are 21 items consisting of three scales (Depression, Anxiety and Stress) contains 7 items and scores from each scale can range from 0-56. The lower the scores for each scale indicates a better outcome. | 28 days |
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Inclusion Criteria:
Exclusion Criteria:
Not having the basic skills needed to operate a smartphone, tablet, or computer
Having smoked any cigarette, electronic cigarette, cigar, pipe, or used a recreational drug as well as any product containing cannabidiol (CBD) or tetrahydrocannabinol (THC) in the past 30 days prior to Screening
Having donated blood within 30 days before Screening
Having been diagnosed with dysphagia or difficulty swallowing
Having participated in another study within 30 days prior to Screening
Being pregnant, planning on becoming pregnant during study participation or refusing to indicate willingness to use a medically acceptable form of birth control, if applicable, during study participation, or breast feeding
Are participating in a stress management program and will not for the duration of the study participation
Unable to avoid any form of intense exercise or a significant change in exercise routine during the day of saliva specimen collection
Currently taking any supplements containing L-theanine or D-theanine within the past 30 days before Screening
Currently taking supplements including melatonin, 5-hydroxytryptophan, Calamus, California poppy, St. John's wort, S-adenosylmethionine (SAM-E), catnip, hops, kava, valerian, Jamaican dogwood, skullcap, yerba mansa, Hawaiian baby woodrose, L-theanine, magnesium, or any other supplement for stress, burnout, mood, or sleep. These may preclude participation in the study dependent the judgment of the Study Investigator/Sub-Investigator
Having been diagnosed, received medical treatment, taking medications or supplements daily for the following medical condition(s):
Presence of active or recurring clinically significant conditions as follows:
Currently taking or having taken within the 30 days before Screening any hormone replacement therapy, except those utilized as a method of birth control and which have been taken for > 3 months with no anticipated change for the duration of the study period
Having had a surgical procedure or having an internal medical device which, in the judgment of the Study Investigator/Sub-Investigator, would preclude participation in the study
Currently consumes more than 4 standard alcoholic drinks per week for women and 7 drinks per week for men (a standard alcoholic drink is defined as one bottle/can of beer, one glass of wine, or one ounce of hard liquor)
Unable or unwilling to avoid consuming grapefruit juice or fresh grapefruit, Seville oranges, and tangelos for the duration of the study period
History of known or suspected substance abuse (e.g., alcohol, opiates, benzodiazepines, or amphetamines) 18 Having any other circumstance that may preclude study participation in the judgment of the Study Investigator/Sub-Investigator, including use of other nutritional supplements, which will be evaluated on a case-by-case basis
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| Name | Affiliation | Role |
|---|---|---|
| Andrew Swick, PhD | Life Extension | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Life Extension Clinical Research, Inc. | Fort Lauderdale | Florida | 33304 | United States |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 17594144 | Background | Ahn RS, Lee YJ, Choi JY, Kwon HB, Chun SI. Salivary cortisol and DHEA levels in the Korean population: age-related differences, diurnal rhythm, and correlations with serum levels. Yonsei Med J. 2007 Jun 30;48(3):379-88. doi: 10.3349/ymj.2007.48.3.379. | |
| 16759779 | Background | Borzelleca JF, Peters D, Hall W. A 13-week dietary toxicity and toxicokinetic study with l-theanine in rats. Food Chem Toxicol. 2006 Jul;44(7):1158-66. doi: 10.1016/j.fct.2006.03.014. Epub 2006 Apr 26. |
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| ID | Term |
|---|---|
| D000077062 | Burnout, Psychological |
| D005221 | Fatigue |
| ID | Term |
|---|---|
| D013315 | Stress, Psychological |
| D001526 | Behavioral Symptoms |
| D001519 | Behavior |
| D012816 | Signs and Symptoms |
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| ID | Term |
|---|---|
| C026166 | theanine |
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| Placebo | Dietary Supplement | Placebo tablet |
|
| Leeds Sleep Evaluation Questionnaire (LSEQ) | Assessment of the mean change in the results of the Leeds Sleep Evaluation Questionnaires (LSEQ) from baseline. This questionnaire consists of ten self-rating questions related to four consecutive aspects of sleep (getting to sleep, quality of sleep, awakening from sleep and behavior following sleep). The total LSEQ score can range from 0-100. The higher the total global LSEQ score indicates a better outcome. | 28 days |
| Maslach Burnout Inventory (MBI-GS) | Assessment of the mean change in the results of Maslach Burnout Inventory (MBI-GS) from baseline. This survey consists of 16 statements of job-related feelings. It consists of 3 subscales including Emotional Exhaustion, Depersonalization and Professional Accomplishment. The total score can range from 0 to 96. The lower the score for the Emotional Exhaustion and Depersonalization components represent a better outcome and a higher score for the Professional Accomplishment represents a better outcome. | 28 days |
| Short Form -36 Health Survey (SF-36) | Assessment of the mean change in the results of the Short Form-36 Health Survey (SF-36) from baseline. This is a 36-item questionnaire that covers eight domains including physical functioning, bodily pain, role limitations due to physical health problems, role limitations due to personal or emotional problems, emotional well-being, social functioning, energy/fatigue and general health perceptions. The scores from each domain can range from 0 to 100. The higher the scores for each domain indicates a better outcome. | 28 days |
| Cortisol Levels | Assessment of the mean change in the results of Cortisol levels from baseline | 28 days |
| Background | Care, I. f. Q. a. E. i. H. (2020). Depression: What is burnout? Retrieved from https://www.ncbi.nlm.nih.gov/books/NBK279286/ |
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| 22581646 | Background | Fernandez-Guasti A, Fiedler JL, Herrera L, Handa RJ. Sex, stress, and mood disorders: at the intersection of adrenal and gonadal hormones. Horm Metab Res. 2012 Jul;44(8):607-18. doi: 10.1055/s-0032-1312592. Epub 2012 May 11. |
| 31623400 | Background | Hidese S, Ogawa S, Ota M, Ishida I, Yasukawa Z, Ozeki M, Kunugi H. Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial. Nutrients. 2019 Oct 3;11(10):2362. doi: 10.3390/nu11102362. |
| 27396868 | Background | Hidese S, Ota M, Wakabayashi C, Noda T, Ozawa H, Okubo T, Kunugi H. Effects of chronic l-theanine administration in patients with major depressive disorder: an open-label study. Acta Neuropsychiatr. 2017 Apr;29(2):72-79. doi: 10.1017/neu.2016.33. Epub 2016 Jul 11. |
| Background | Higashiyama, A., Htay, H, Ozeki, M Et Al. (2011). Effects of L-theanine on attention and reaction time response. Journal of Functional Foods, 3, 171-178. |
| 18293419 | Background | Kakuda T, Hinoi E, Abe A, Nozawa A, Ogura M, Yoneda Y. Theanine, an ingredient of green tea, inhibits [3H]glutamine transport in neurons and astroglia in rat brain. J Neurosci Res. 2008 Jun;86(8):1846-56. doi: 10.1002/jnr.21637. |
| 17937582 | Background | Kim EJ, Dimsdale JE. The effect of psychosocial stress on sleep: a review of polysomnographic evidence. Behav Sleep Med. 2007;5(4):256-78. doi: 10.1080/15402000701557383. |
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| D013568 |
| Pathological Conditions, Signs and Symptoms |