Effects of Stress-reducing Aromatherapy
Physiologic and Expectancy Effects of Stress-reducing Aroma in Older Adults
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
Undersøgelsestype
Undersøgelsestype
Tilmelding (Faktiske)
Tilmelding
Fase
Fase
- Fase 2
- Fase 3
Kontakter og lokationer
Studiesteder
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Oregon
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Portland, Oregon, Forenede Stater, 97239
- Oregon Health & Science University
-
-
Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- in good physical and cognitive health
- reporting moderate level of stress
- able to perceive aromas
- able to understand and follow study instructions
Exclusion Criteria:
- taking medications affecting central nervous system (CNS) function or physiologic measures (e.g. steroids or neuroleptics)
- reporting smell sensitivities or allergies
- smoking presently or in the past less than one year prior to enrollment
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Forebyggelse
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Enkelt
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
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Eksperimentel: stress reducing aroma
aroma with reported stress reducing effects
|
Comparison of known stress reducing aroma to placebo aromas without stress-reducing effects
Andre navne:
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Placebo komparator: Placebo aroma 1
|
Comparison of known stress reducing aroma to placebo aromas without stress-reducing effects
Andre navne:
|
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Placebo komparator: Placebo aroma 2
|
Comparison of known stress reducing aroma to placebo aromas without stress-reducing effects
Andre navne:
|
Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Percent of Baseline Level of Salivary Cortisol
Tidsramme: assessed at baseline (60 min prior to aroma exposure and stress), stress battery (30 min after aroma exposure and during stress), post-stress (60 min after completing stress battery)
|
Percent of baseline level of salivary cortisol (values greater than baseline indicate increased stress)
|
assessed at baseline (60 min prior to aroma exposure and stress), stress battery (30 min after aroma exposure and during stress), post-stress (60 min after completing stress battery)
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Electroencephalography (EEG) Frontal Asymmetry
Tidsramme: assessed at baseline (60 min prior to aroma exposure and stress), at the onset of aromatherapy exposure, stress battery (30 min after aroma exposure and during stress), post-stress (60 min after completing stress battery)
|
EEG frontal asymmetry (FA) is used to assess emotional state.
EEG FA processing was completed by averaging local reference EEG filtered offline from 0.1 to 70 Hz (with 60 Hz notch filter).
5-min data periods during each time were segmented into 2 seconds epochs, and the semi-automatic artifact rejection was applied.
The remaining artifact-free epochs were subjected to Fast Fourier Transform (FFT) .
The power spectra for individual epochs were averaged, and the measures of EEG spectral density were obtained for alpha band (8 -12.99 Hz).
Square root values of power were used, and frontal hemispheric asymmetry was calculated as ((L-R)/(L+R))*100, where L and R are square root values at the homologous left and right hemisphere sites (using local average reference values at F3 and F4).
With this calculation, FA negative values reflect lower alpha power (higher activation) in the left hemisphere linked to a more positive mood.
This is a unit-free measure.
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assessed at baseline (60 min prior to aroma exposure and stress), at the onset of aromatherapy exposure, stress battery (30 min after aroma exposure and during stress), post-stress (60 min after completing stress battery)
|
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Cognitive Performance: Percent Change From Baseline in Digit Span Backward Task Score
Tidsramme: Baseline (60 min prior to aroma exposure and stress), post-stress (60 min after completing stress battery)
|
Percent change from baseline in cognitive performance score on the Digit Span Backward (DSB) task.
DSB scores range from 0 to 16, with greater scores indicative of better cognitive function.
Positive change from baseline indicates better functioning.
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Baseline (60 min prior to aroma exposure and stress), post-stress (60 min after completing stress battery)
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Efterforskere
Efterforskere
- Ledende efterforsker: Barry S Oken, MD, Oregon Health and Science University
Publikationer og nyttige links
Generelle publikationer
- Chamine I, Oken BS. Aroma Effects on Physiologic and Cognitive Function Following Acute Stress: A Mechanism Investigation. J Altern Complement Med. 2016 Sep;22(9):713-21. doi: 10.1089/acm.2015.0349. Epub 2016 Jun 29.
- Chamine I, Oken BS. Expectancy of stress-reducing aromatherapy effect and performance on a stress-sensitive cognitive task. Evid Based Complement Alternat Med. 2015;2015:419812. doi: 10.1155/2015/419812. Epub 2015 Jan 31.
Datoer for undersøgelser
Studer store datoer
Studiestart
Studiestart
Primær færdiggørelse (Faktiske)
Primær færdiggørelse
Studieafslutning (Faktiske)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- IRB#00006890
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