Academic Journal
Decoupling of Internal and External Workload During a Marathon: An Analysis of Durability in 82,303 Recreational Runners
| العنوان: | Decoupling of Internal and External Workload During a Marathon: An Analysis of Durability in 82,303 Recreational Runners |
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| المؤلفون: | Smyth, Barry, Maunder, Ed, Meyler, Samuel, Hunter, Ben, Muniz-Pumares, Daniel |
| المساهمون: | University College Dublin |
| المصدر: | Sports Medicine ; volume 52, issue 9, page 2283-2295 ; ISSN 0112-1642 1179-2035 |
| بيانات النشر: | Springer Science and Business Media LLC |
| سنة النشر: | 2022 |
| الوصف: | Aim This study characterised the decoupling of internal-to-external workload in marathon running and investigated whether decoupling magnitude and onset could improve predictions of marathon performance. Methods The decoupling of internal-to-external workload was calculated in 82,303 marathon runners (13,125 female). Internal workload was determined as a percentage of maximum heart rate, and external workload as speed relative to estimated critical speed (CS). Decoupling magnitude (i.e., decoupling in the 35–40 km segment relative to the 5–10 km segment) was classified as low (< 1.1), moderate (≥ 1.1 but < 1.2) or high (≥ 1.2). Decoupling onset was calculated when decoupling exceeded 1.025. Results The overall internal-to-external workload decoupling experienced was 1.16 ± 0.22, first detected 25.2 ± 9.9 km into marathon running. The low decoupling group (34.5% of runners) completed the marathon at a faster relative speed (88 ± 6% CS), had better marathon performance (217.3 ± 33.1 min), and first experienced decoupling later in the marathon (33.4 ± 9.0 km) compared to those in the moderate (32.7% of runners, 86 ± 6% CS, 224.9 ± 31.7 min, and 22.6 ± 7.7 km), and high decoupling groups (32.8% runners, 82 ± 7% CS, 238.5 ± 30.7 min, and 19.1 ± 6.8 km; all p < 0.01). Compared to females, males’ decoupling magnitude was greater (1.17 ± 0.22 vs. 1.12 ± 0.16; p < 0.01) and occurred earlier (25.0 ± 9.8 vs. 26.3 ± 10.6 km; p < 0.01). Marathon performance was associated with the magnitude and onset of decoupling, and when included in marathon performance models utilising CS and the curvature constant, prediction error was reduced from 6.45 to 5.16%. Conclusion Durability characteristics, assessed as internal-to-external workload ratio, show considerable inter-individual variability, and both its magnitude and onset are associated with marathon performance. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1007/s40279-022-01680-5 |
| DOI: | 10.1007/s40279-022-01680-5.pdf |
| DOI: | 10.1007/s40279-022-01680-5/fulltext.html |
| الاتاحة: | http://dx.doi.org/10.1007/s40279-022-01680-5 https://link.springer.com/content/pdf/10.1007/s40279-022-01680-5.pdf https://link.springer.com/article/10.1007/s40279-022-01680-5/fulltext.html |
| Rights: | https://creativecommons.org/licenses/by/4.0 ; https://creativecommons.org/licenses/by/4.0 |
| رقم الانضمام: | edsbas.84CFD690 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1007/s40279-022-01680-5 |
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