The Presence of Wind Worsens the Effect of Cold Temperature on Time to Ischemia in Patients with Stable Angina.
In: Medicine & Science in Sports & Exercise, Jg. 55 (2023-06-01), Heft 6, S. 975-981
Online
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Zugriff:
Purpose: This study tested the hypothesis that the combination of cold temperature and wind further reduces time to ischemia during treadmill stress testing compared with cold temperature alone. Methods: Eighteen participants (56 ± 9 yr) with stable angina performed four treadmill stress tests in a randomized crossover design at +20°C and −8°C, with and without a 24-km·h−1 headwind. Time to ischemia (≥1-mm ST-segment depression) and angina, rate pressure product, and total exercise duration were determined. Results: At −8°C, time to ischemia was reduced by 22% (−58 s (−85 to −31 s), P < 0.01) compared with +20°C. The addition of wind at −8°C reduced time to ischemia by a further 15% (−31 s (−58 to −4 s) vs −8°C without wind, P = 0.02). The addition of wind did not affect time to ischemia at +20°C (P = 0.38). Cold temperature and wind did not affect time to angina (P = 0.46 and P = 0.61) or rate pressure product (P = 0.46 and P = 0.09). Total exercise time was reduced in the presence of wind at −8°C (−29 s (−51 to −7 s), P = 0.01), but not at +20°C (P = 0.09). Conclusions: The presence of wind reduces time to ischemia when exercise stress testing is performed in a cold environment. These results suggest that wind should be considered when evaluating the risks posed by cold weather in patients with coronary artery disease and exercise-induced ischemia. [ABSTRACT FROM AUTHOR]
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The Presence of Wind Worsens the Effect of Cold Temperature on Time to Ischemia in Patients with Stable Angina.
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Autor/in / Beteiligte Person: | BARRY, HADIATOU ; GAGNON, DANIEL ; IGLESIES-GRAU, JOSEP ; LALONGÉ, JULIE ; JUNEAU, MARTIN |
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Zeitschrift: | Medicine & Science in Sports & Exercise, Jg. 55 (2023-06-01), Heft 6, S. 975-981 |
Veröffentlichung: | 2023 |
Medientyp: | academicJournal |
ISSN: | 0195-9131 (print) |
DOI: | 10.1249/MSS.0000000000003120 |
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