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- Titel:
Effects of Acute Caffeine Supplementation on Integrated Biathlon Performance in Elite Male Athletes
- Dokumenttyp:
- Zeitschriftenaufsatz
- Autor(en):
- Engel, Helena; Yilmaz, Ceren; Appelhans, Daniel; Staunton, Craig A.; Kock, Hannes; Mathieu, Jörn; Leitlauf, Tim; Brandl, Rick; Waibel, Karlheinz; Koehler, Karsten
- Abstract:
- Caffeine enhances endurance performance but may impair shooting accuracy, creating a potential trade-off for overall biathlon performance. In a randomized, placebo-controlled, crossover study, seven elite male biathletes consumed caffeine (3 mg/kg) or taste-matched placebo 60 min before a simulated biathlon competition consisting of five “laps” of 6-min treadmill skiing interspersed by four five-shot bouts. Participants further performed precision shooting (20 prone and 20 standing) pre- and postcompetition. Caffeine increased distance covered in Laps 1 (1,824 ± 73 vs. 1,772 ± 66 m; p = .03, dz = 1.12) and 2 (1,801 ± 92 vs. 1,776 ± 84 m; p = .02, dz = 1.19) but did not improve total distance (p = .06). Blood lactate (p = .01, η2p=.85) and ventilation (p < .001, η2p=.90) increased with caffeine. Heart rate (p = .07) and perceived exertion (p = .69) did not differ between conditions. Caffeine impaired shooting accuracy in standing (72.9 ± 16.0% vs. 82.9 ± 7.6%; p = .03, dz = 0.87), but not prone. Integrated race times did not differ between conditions for individual (71.72 ± 5.27 vs. 71.58 ± 4.57 min), mass start (52.45 ± 3.67 vs. 52.57 ± 3.27 min), or pursuit (44.18 ± 3.18 vs. 44.23 ± 2.83 min; all p > .77) formats. Caffeine impaired postexercise precision shooting in prone position (88.9 ± 6.0% vs. 93.3 ± 7.5%; p = .04, dz = 0.65). Our findings highlight task-specific effects of caffeine, emphasizing the importance of tailoring supplementation to integrated performance demands.
- Stichworte:
- shooting accuracy; cross-country skiing; endurance; elite athletes; ergogenic aid
- Dewey Dezimalklassifikation:
- 570 Biowissenschaften, Biologie; 610 Medizin und Gesundheit; 790 Sport, Spiele, Unterhaltung
- Zeitschriftentitel:
- International Journal of Sport Nutrition and Exercise Metabolism
- Jahr:
- 2026
- Seitenangaben Beitrag:
- 1-10
- Nachgewiesen in:
- Web of Science
- Reviewed:
- ja
- Sprache:
- en
- Volltext / DOI:
- doi:10.1123/ijsnem.2025-0138
- Verlag / Institution:
- Human Kinetics
- E-ISSN:
- 1526-484X1543-2742
- Impact Factor:
- 2,6
- Scimago-Quartil:
- Q2
- Status:
- Verlagsversion / published
- Publikationsdatum:
- 01.01.2026
- Semester:
- WS 25-26
- TUM Einrichtung:
- Professur für Bewegung, Ernährung und Gesundheit
BibTeX
Vorkommen:
- mediaTUM GesamtbestandEinrichtungenSchools TUM School of Medicine and HealthDepartmentsHealth and Sport SciencesProfessur für Bewegung, Ernährung und Gesundheit (Prof. Köhler)
- mediaTUM GesamtbestandHochschulbibliographie2026SchoolsTUM School of Medicine and HealthProfessur für Bewegung, Ernährung und Gesundheit (Prof. Köhler)