Scientists Test if Nature Enhances Exercise's Effect on Depression

Depression is a significant mental health challenge for older adults, and while exercise is a known mood-booster, most structured programmes remain indoors. Researchers in Hong Kong are now launching a study to test if blending exercise with the great outdoors offers superior benefits.

The 16-week randomised controlled trial will involve 129 adults aged 60 to 74 with depressive symptoms. They will be randomly assigned to one of three groups: a blended indoor-outdoor exercise programme, an indoor-only programme, or a control group. Both exercise groups will follow a multicomponent routine including aerobic, strength, and balance training.

Scientists will primarily track changes in depressive symptoms. They will also measure secondary outcomes like physical fitness, exercise enjoyment, and levels of the stress hormone cortisol. Crucially, the study aims to discover if a greater 'connectedness to nature' is the psychological key that unlocks the enhanced mental health benefits of the blended programme, potentially guiding future public health policies.