Stress Relief Properties of a Cosmetic Routine
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Abstracto
Descripción
Everyday life psychosocial challenges may negatively impact health and well-being, contributing to the onset and/or progression of psychological and psychosomatic disorders. Pharmacological treatments can moderate our stress response, but they usually bring about addiction/tolerance and a number of other side effects. Therefore, it is relevant to identify alternative stress relief strategies that are devoid of these unwanted drawbacks. Moreover, the effects of such alternative interventions should be objectively quantified by means of reliable psychobiological parameters.
The goal of this study was to quantify the acute and persistent effects of a cosmetic routine based on the self-administration of a cream (DAVC) enriched with essential oils, namely Juniperus Phoenicea gum extract, Copaifera Officinalis resin, Aniba Rosodora wood oil, Juniperus Virginiana. This aim was achieved by measuring the (re-)activity of the autonomic nervous system (via heart variability indexes) and the hypothalamic-pituitary-adrenocortical axis (via salivary cortisol levels), as well as through psychometric and behavioral assessments.
Fourty women, 25-50 years old, were instructed for a correct mode of self administration of the cream. On day 0, women came to the lab and were instrumented for electrocardiographic signal (ECG) recordings. Initially, a 10-min ECG was collected in resting conditions (baseline). Then, two 20-min ECGs were recorded, each following the self-administration (3-min duration) of the DAVC and a placebo cream (PLAC), in a randomized order. At the end of the baseline and the two post-cream administration recordings, saliva samples were collected. From day 1 to 28, subjects self-administered (at home, twice a day, at wake-up and bed time) either DAVC (n=20) or PLAC (n=20).
On day 29, they returned to the lab and ECGs and underwent a stress test (Trier Social Stress Test, TSST). The test lasted 10 min and consisted in a stress interview (5 min), immediately followed by an arithmetic task. ECGs were collected in baseline (10 min), test (10 min), and recovery (20 min) phases. Saliva samples were collected at the end of the baseline and the middle and the end of the recovery phase. The subjects filled a number of psychological questionnaires, including Profile of Mood States (POMS, on day 0 and 29) and STAI-Y1 (on day 29). In addition, subjects were videorecorded during the TSST, in order to quantify their non verbal behavior patterns (via ECSI).
A single, self-administration of DAVC (day 0) produced a significant, acute potentiation of parasympathetic neural modulation (HF index: 25% increase as to baseline), whereas PLAC produced only a modest change (3% increase). DAVC provoked a modest (10%), non significant reduction of cortisol levels, which was similar to that induced by PLAC.
Prolonged DAVC self-administration (4 weeks) produced: (i) a significant inhibition of stress-induced cortisol elevation on day 29 (55% increase as compared to pre-stress value in DAVC group, 75% in PLAC group); (ii) a significant improvement of mood profile (POMS test) on day 29 compared to day 0; (iii) a reduction of perceived anxiety (STAI-Y1 score) at the end of the TSST; (iv) significantly lower scores of behavioral patterns linked to anxiety, motivational conflict and avoidance and higher scores of affiliation during the TSST, as compared to PLAC group.
These autonomic neural, neuroendocrine and psychological data suggest that a cream enriched with essential oils has both acute and long-term stress-reduction effects on human psychophysiology. Acute effects involve a potentiation of the parasympathetic component of autonomic neural regulation, which is usually associated with well-being, relaxation and resilience. The long-term effects point to a generalized stress-relief property, involving both the hormonal and psychological sides of stress adaptation.
fechas
Verificado por última vez: | 09/30/2019 |
Primero enviado: | 09/25/2019 |
Inscripción estimada enviada: | 10/13/2019 |
Publicado por primera vez: | 10/14/2019 |
Última actualización enviada: | 10/13/2019 |
Última actualización publicada: | 10/14/2019 |
Fecha de inicio real del estudio: | 01/14/2018 |
Fecha estimada de finalización primaria: | 09/27/2018 |
Fecha estimada de finalización del estudio: | 12/13/2018 |
Condición o enfermedad
Intervención / tratamiento
Biological: Cream
Fase
Grupos de brazos
Brazo | Intervención / tratamiento |
---|---|
Experimental: Enriched Cream The enriched cream is self-administered and contains a blend of 4 essential oils, namely Juniperus phoenicea gum extract, Copaifera officinalis resin, Aniba rosaeodora wood oil and Juniperus virginiana oil. | |
Active Comparator: Placebo Cream Cream devoid of essential oils, self-administered |
Criterio de elegibilidad
Edades elegibles para estudiar | 25 Years A 25 Years |
Sexos elegibles para estudiar | Female |
Acepta voluntarios saludables | si |
Criterios | Inclusion Criteria: - female gender - 25 to 50 years old Exclusion Criteria: - current or past neurological, psychiatric, and cardiac disorders - cognitive impairment - substance or alcohol abuse or dependence - recent (last 12 months) traumatic events such as a death in the family, serious accident, job firing or divorce - caregiving (last 12 months) a family member with serious pathology or disability - current psychotropic or contraceptive drug use |
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Medidas de resultado primarias
1. Acute autonomic stress responsivity (heart rate, HR) to cream self-administration [ECG recorded just before (for 10 minutes) the self-administration of the enriched and placebo creams (day 0)]
2. Acute autonomic stress responsivity (heart rate, HR) to cream self-administration [ECG recorded just after (for 20 minutes) the self-administration of the enriched and placebo creams (day 0)]
3. Acute autonomic stress responsivity (HF, vagal input to the heart) to cream self-administration [ECG recorded just before (for 10 minutes) the self-administration of the enriched and placebo creams (day 0)]
4. Acute autonomic stress responsivity (HF, vagal input to the heart) to cream self-administration [ECG recorded just after (for 20 minutes) the self-administration of the enriched and placebo creams (day 0)]
5. Acute HPA axis stress responsivity to cream self-administration [Samples obtained just before the self-administration of the enriched and placebo creams]
6. Acute HPA axis stress responsivity to cream self-administration [Samples obtained after (20 min) the self-administration of the enriched and placebo creams]
7. Acute HPA axis stress responsivity to the psychosocial stress test [Samples obtained just before the psychosocial stress test]
8. Acute HPA axis stress responsivity to the psychosocial stress test [Samples obtained after (10 minutes) the psychosocial stress test]
9. Acute HPA axis stress responsivity to the psychosocial stress test [Samples obtained after (30 minutes) the psychosocial stress test]
Medidas de resultado secundarias
1. Perceived stress [Before (day -2) the 4-week time period (day 0 to 28) during which subjects self-administered twice daily (at wake up time and bed time) the cream]
2. Perceived stress [After (day 29) the 4-week time period (day 0 to 28) during which subjects self-administered twice daily (at wake up time and bed time) the cream]
3. Profile of mood states [Before (day -2) the 4-week time period (day 0 to 28) during which subjects self-administered twice daily (at wake up time and bed time) the cream]
4. Profile of mood states [After (day 29) the 4-week time period (day 0 to 28) during which subjects self-administered twice daily (at wake up time and bed time) the cream]
5. Behavioral coping style [During the psychosocial stress test (PST, day 29)]