Effect of exercise in a desert environment on physiological and subjective measures.

Green exercise is beneficial to emotional and physiological measures, however, the US has large desert areas. We aimed to determine if exercise in a desert (brown) environment extends similar benefits to green. Participants (N = 10) completed baseline measures (PRE), 30-min seated rest (SIT), and 30-min self-paced walking (WALK) in: indoor, outdoor urban, green, and two brown environments. Heart rate (HR), blood pressure (BP), and measures of stress, comfort, and calm were obtained. After SIT, HR was elevated in urban vs green (p = 0.05). Systolic BP was lower after SIT compared to PRE and WALK (p = 0.05). Brown and green returned greater comfort and calm scores (p = 0.001). Stress was lower following WALK than PRE and SIT (p < 0.01). Comfort and calm were greatest in natural environments, and exercise significantly reduced perceived stress. Taken together, these data provide evidence that exercise in a desert environment is just a beneficial as the exercise performed in a green environment. Abbreviations: ANCOVA: analysis of covariance; ANOVA: analysis of variance; AU: arbitrary units; BP: blood pressure; BSL: below sea level; DBP: diastolic blood pressure; HR: heart rate; PRE: baseline measurement; PS: perceived stress; SBP: systolic blood pressure; SIT: measurement following 30-min seated rest; WALK: measurement following 30-min self-paced walking.