Cyclic movement frequency is associated with muscle typology in athletes
(Zyklische Bewegungsfrequenz steht bei Sportlern im Zusammenhang mit der Muskeltypologie)
There is a continuing research interest in the muscle fiber type composition (MFTC) of athletes. Recently, muscle carnosine quantification by proton magnetic resonance spectroscopy (1H-MRS) was developed as a new non-invasive method to estimate MFTC. This cross-sectional study aims to better understand estimated MFTC in relation to (a) different disciplines within one sport; (b) cyclic sport exercise characteristics; (c) within-athlete variability; and (d) athlete level. A total of 111 elite athletes (74 runners, 7 triathletes, 11 swimmers, 14 cyclists and 5 kayakers) and 188 controls were recruited to measure muscle carnosine in gastrocnemius and deltoid muscle by 1H-MRS. Within sport disciplines, athletes were divided into subgroups (sprint-, intermediate-, and endurance-type). The controls were used as reference population to allow expression of the athletes` data as Z-scores. Within different sports, endurance-type athletes systematically showed the lowest Z-score compared to sprint-type athletes, with intermediate-type athletes always situated in between. Across the different sports disciplines, carnosine content showed the strongest significant correlation with cyclic movement frequency (R = 0.86, P = 0.001). Both within and between different cyclic sports, estimated MFTC was divergent between sprint- and endurance-type athletes. Cyclic movement frequency, rather than exercise duration came out as the most determining factor for the optimal estimated MFTC in elite athletes.
© Copyright 2017 Scandinavian Journal of Medicine & Science in Sports. Wiley. Alle Rechte vorbehalten.
Schlagworte: | Ausdauerdisziplinen Lauf Triathlon Schwimmen Radsport Kanurennsport Muskel Faser Zusammensetzung Hochleistungssport Relation Frequenz Bewegung Bewegungsschnelligkeit Sprint |
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Notationen: | Biowissenschaften und Sportmedizin |
DOI: | 10.1111/sms.12648 |
Veröffentlicht in: | Scandinavian Journal of Medicine & Science in Sports |
Veröffentlicht: |
2017
|
Jahrgang: | 27 |
Heft: | 2 |
Seiten: | 223-229 |
Dokumentenarten: | Artikel |
Sprache: | Englisch |
Level: | hoch |