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fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Publisher: Thieme
Languages: English
Types: Article
Subjects: C630
In this study, the effect of cold temperature on the physical activity profiles of professional soccer players in official match-play was investigated. Computerised motion-analysis was used to analyse performance in 9 players (4 defenders and 5 midfielders) in four temperature ranges: ≤5°C (29 matches), 6-10°C (62 matches), 11-20°C (48 matches) and ≥21°C (27 matches). Performance was analysed per minute for total distance covered and distance run in three categories: 0.0-14.3 km/h (walking/low/moderate); 14.4-19.7 km/h (running); ≥19.8 km/h (high-intensity). Results showed that while total distance run per minute was unaffected in colder conditions, midfielders ran significantly shorter distances in warmer temperatures: ≥21°C = 118.7±6.9m versus ≤5°C = 124.2±7.1m, p<0.01; 6-10°C = 123.6±6.8m, p<0.01; and, 11-20°C = 123.4±5.4, p<0.05). The total distance covered at three intensities and across halves was unaffected by temperature. Similarly, high-intensity efforts across match halves and in the first and final 5-minute periods in each half of normal time were unaffected by temperature. In contrast, high-intensity efforts in midfielders across 15-minute intervals were affected by temperature with greater distances covered per minute in the 30-45 minute period in matches played in temperatures ≤5°C versus the corresponding period in those played in temperatures ≥21°C (9.1±3.8m versus 6.2±3.0m, p<0.05). The present findings generally suggest that physical performance in professional soccer does not decrease in cold temperatures.
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    • 1 Armstrong LE. Nutritional strategies for football: counteracting heat, cold, high altitude, and jet lag. J Sports Sci. 2006; 24: 723-740
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