Climate change and physical activity: ambient temperature and urban trail use in Texas.
Int J Biometeorol
; 66(8): 1575-1588, 2022 Aug.
Article
en En
| MEDLINE
| ID: mdl-35622168
ABSTRACT
Individuals in the USA are insufficiently active, increasing their chronic disease risk. Extreme temperatures may reduce physical activity due to thermal discomfort. Cooler climate studies have suggested climate change may have a net positive effect on physical activity, yet research gaps remain for warmer climates and within-day physical activity patterns. We determined the association between ambient temperatures (contemporary and projected) and urban trail use in a humid subtropical climate. At a trail in Austin, TX, five electronic counters recorded hourly pedestrian and cyclist counts in 2019. Weather data were acquired from World Weather Online. Generalized additive models estimated the association between temperature and trail counts. We then combined the estimated exposure-response relation with weather projections from climate models for intermediate (RCP4.5) and high (RCP8.5) emissions scenarios by NASA NEX-GDDP. From summer to autumn to spring to winter, hourly trail counts shifted from bimodal (mid-morning and early-evening peaks) to one mid-day peak. Pedestrians were more likely to use the trail between 7 and 27 °C (45-81°F) with peak use at 17 °C (63°F) and cyclists between 15 and 33 °C (59-91°F) with peak use at 27 °C (81°F) than at temperature extremes. A net decrease in trail use was estimated by 2041-2060 (RCP4.5 pedestrians = - 4.5%, cyclists = - 1.1%; RCP8.5 pedestrians = - 6.6%, cyclists = - 1.6%) and 2081-2100 (RCP4.5 pedestrians = - 7.5%, cyclists = - 1.9%; RCP8.5 pedestrians = - 16%, cyclists = - 4.5%). Results suggest climate change may reduce trail use. We recommend interventions for thermal comfort at settings for physical activity.
Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Cambio Climático
/
Peatones
Límite:
Humans
País/Región como asunto:
America do norte
Idioma:
En
Revista:
Int J Biometeorol
Año:
2022
Tipo del documento:
Article
País de afiliación:
Estados Unidos