Can a short stress course help older adults cope and lower cortisol?
A six-week group stress-management course gave older adults a short-term boost in problem-solving coping, a drop in anxiety and lower daily cortisol, but most of these gains faded by three months.
Source
Increasing stress resilience in older adults through a 6-week prevention program: effects on coping strategies, anxiety symptoms, and cortisol levels
Study at a glance
- Design
- RCT — Cluster randomized trial: retirement residences and community-organization programs were randomly assigned to a 6-week group stress-management program (O'stress) or a waitlist; outcomes at baseline, 3 weeks after the program and 3-month follow-up
- N
- N=170 · 170 participants consented and completed baseline; 107 completed all three assessments, and each repeated-measures analysis used only participants with complete data on that outcome
- Population
- French-speaking community-dwelling older adults (aged 55+, mean age mid-70s, mostly women, about three-quarters living in private retirement residences) in Québec who wanted to manage stress better
- Outcome
- Proactive coping and strategic planning (Proactive Coping Inventory), perceived stress (PSS), anxiety and depression (HADS), and diurnal salivary cortisol (cortisol awakening response and total daily output, AUCg)
Structured fields used in claim comparison tables when every cited study has a complete layer.
What they did
Residences and community programs in Québec were randomly assigned either to run a six-workshop group course on stress (O'stress) or to a waitlist. The course taught how the stress hormone system works, what makes situations stressful (novelty, unpredictability, threat to ego, low sense of control), breathing and problem-solving strategies, and how stress spreads between people ('stress contagion'). The 170 older adults who enrolled completed questionnaires and gave saliva samples four times a day on two days, before the course, 3 weeks after it and 3 months later.
What they found
Three weeks after the course, the program group increased proactive coping and strategic planning more than the waitlist group, showed a larger drop in anxiety, and had a larger drop in total daily cortisol, all with small-to-medium effect sizes. Perceived stress and depression did not differ between groups at 3 weeks, and the morning cortisol rise did not change differently. By 3 months the coping and anxiety advantages had faded, cortisol partly rebounded, and the only new group difference was that perceived stress worsened in the waitlist group while staying stable in the program group.
The limits
What it doesn't show
The control group received nothing (a waitlist), so the benefits could come from simply meeting in a supportive group rather than from the specific stress content, as the authors acknowledge. Only 107 of 170 participants completed all assessments, attrition was higher in the program group at 3 weeks, and people who dropped out were more anxious and depressed at baseline, which could bias results. Groups differed in age and functional autonomy at baseline, and covariates were chosen by a backward-elimination procedure, while many outcomes were tested without correction, so some significant effects may be fragile. About three-quarters of the sample lived in high-end private residences, which limits generalization.
Key terms
- Cluster randomized trial
- A trial that randomly assigns whole groups (here residences or programs) rather than individuals, to stop people in the same place from sharing what they learn across conditions.
- Waitlist control
- A comparison group that receives no intervention during the study but is offered it afterwards; it controls for time and repeated testing but not for attention or group contact.
- Diurnal cortisol (AUCg)
- Total cortisol released across the day, estimated as the area under the curve from several saliva samples.
- Cortisol awakening response (CAR)
- The normal sharp rise in cortisol in the first 30 minutes after waking.
- Proactive coping
- Taking initiative to anticipate and deal with problems before or as they arise, for example by setting goals and planning steps.
- Stress contagion
- The tendency for one person's stress, including their physiological stress response, to be picked up by people around them.
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Quiz yourself
What was the comparison condition in this trial?
Common questions
Why randomize residences instead of individual people?
Participants living in the same residence or attending the same program talk to each other, so individually randomized controls could pick up course content; assigning whole sites avoids this contamination.
Did the course reduce depression?
No group difference was found; depression scores fell a little in both groups over time, so the drop cannot be credited to the course.
Why measure cortisol as well as questionnaires?
Self-reports can be influenced by expectations, so a biological stress marker gives an independent check; here total daily cortisol fell more in the course group at 3 weeks.
What do the authors suggest to make the gains last?
They propose adding booster sessions after the main course, since most coping and anxiety benefits had faded by the 3-month follow-up.
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