Sunscreen Use and Sweat Production in Men and Women
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| Autores: | , |
|---|---|
| Formato: | artículo original |
| Fecha de Publicación: | 2016 |
| Descripción: | Context: Sunscreen lotions are important to protect the skin during outdoor exercise, but they may interfere with sweating. Objective: To measure the effect of two different water-resistant sunscreen products on local sweat production in men and women exercising in the heat, and to compare it with the expected inhibition resulting from the use of an antiperspirant. Design: Randomized Crossover Study Design. Setting: Exercise in the heat (30.2 ± 0.4°C d.b. and 58 ± 4.3% r.h, mean ± S.D.,) in a controlled environment laboratory. Patients or Other Participants: Twenty physically active, apparently healthy college students, ten males (22.5 ± 2.8 years old, 70.2 ± 11.0 kg) and ten females (22.2 ± 3.2 y.o., 57.7 ± 7.9 kg). Intervention(s): The participants performed two exercise sessions on consecutive days with sweat collection patches applied to their right and left scapular regions; we assigned skin treatments (antiperspirant, AP; organic chemical sun filter, sunscreen A, SA; inorganic physical sun block, sunscreen B, SB; no lotion, C) randomly to side and session. Participants pedaled at 79 ± 1% HRmax for 20 min in the heat. Main Outcome Measure(s): Scapular localized sweat rates (LSR). Results: No baseline, environmental, or exercise condition was different among skin treatments. LSR was lower for AP (88.3 μL * min-1 * dm-2; 95%CI: 82.0 to 94.7) and SB (99.3 μL * min-1 * dm-2; 95%CI: 93.1 to 105.5), than for C (122.6 μL * min-1 * dm-2; 95%CI: 116.2 to 129.0) or SA (114.8 μL * min-1 * dm-2; 95%CI: 108.8 to 120.6) (p < 0.01). Conclusions: SB can hinder effective sweating to the same extent as AP, while SA was not different from control. At this stage it is not possible to identify the specific ingredient responsible for the effect. |
| País: | Kérwá |
| Institución: | Universidad de Costa Rica |
| Repositorio: | Kérwá |
| OAI Identifier: | oai:https://www.kerwa.ucr.ac.cr:10669/29541 |
| Acceso en línea: | http://www.natajournals.org/doi/full/10.4085/1062-6050-51.11.01 https://hdl.handle.net/10669/29541 |
| Access Level: | acceso abierto |
| Palabra clave: | sweat rate thermoregulation exercise hyperthermia skin care tasa de sudoración termorregulación ejercicio hipertermia cuidado de la piel |