RESEARCH

Effects of Horticultural Therapeutic Garden on Autonomic Nervous System Among Elderly People with Dementia and the Value of People-Plants Relationships

This study examines the effects of horticultural therapeutic gardens on the autonomic nervous system of elderly individuals with dementia, demonstrating the benefits of people-plant relationships for emotional stability and cognitive function.
Program Types: Therapeutic
Population Groups: Older Adults/Seniors
Setting or Context: Assisted Living/Long-Term Care Homes
Health and Wellness Outcomes: Enhanced Emotional Well-being, Improved Cognitive Function, Sensory Stimulation
Allied Profession Intersections: Recreational Therapy, Occupational Therapy, Social Work
Type of Activity: Sensory Stimulation, Outdoor Gardening
Evidence Type: Observational Research
Measurement and Evaluation: Patient-Reported Outcomes
Access: Free
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Summary

The research investigated how horticultural therapeutic gardens impact the autonomic nervous system (ANS) of elderly individuals with moderate to severe dementia. Seven participants were monitored using electrocardiogram (ECG) analysis while engaging in sensory-stimulating gardening activities, such as walking in the garden, smelling herbs, and touching plants. Results showed that stress levels decreased as the sympathetic nervous system (SNS) activity was reduced, while parasympathetic nervous system (PNS) activity increased, indicating enhanced relaxation and emotional stability.

The study highlights how people-plant relationships activate past memories and create hope for the future, reinforcing the therapeutic value of sensory gardening. Activities like smelling lavender or touching soft plants significantly improved calmness and cognitive engagement. The findings suggest that incorporating horticultural therapy into dementia care programs can support emotional well-being, slow cognitive decline, and improve quality of life

Link

Koura, S., & Ikeda, A. (2014, August). Effects of horticultural therapeutic garden on autonomic nervous system among elderly people with dementia and the value of people-plants relationships. In XXIX International Horticultural Congress on Horticulture: Sustaining Lives, Livelihoods and Landscapes (IHC2014): XII 1121, 27-32.

 

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