Markers of energy metabolism affect lactate metabolism and aerobic performance in competitive female cyclists

Jurov, Iva (avtor), Hadžić, Vedran (avtor), Rauter, Samo (avtor)

(1) Background: Low energy availability (LEA) has negative effects on performance, but mechanisms, timing, and other circumstances of these effects are not yet established. We aim to assess the performance-related effects of low energy availability in competitive female cyclists with a detailed approach to within-day energy availability (WDEB). (2) Methods: Female competitive cyclists (n = 8) completed the measurement of body composition, resting energy expenditure, and incremental testing; they reported diary logs and used accelerometers for energy availability (EA) calculation. Based on the Low Energy Availability in Females (LEAF) questionnaire, performance and energy parameters were compared between cyclists with risk for relative energy deficiency in sport (RED-S; the LEAF+ group) and cyclists without any risk (LEAF−). (3) Results: 87.5% had EA <30 kcal/kg. EA and energy balance in LEAF– were significantly different from LEAF+ cyclists (U = 0.00, z = −2.00, p < 0.05 and U = 0.00, z = −2.00, p < 0.05, respectively). We found significant correlations between WDEB$_{−300}$ and EA (−0.736, p = 0.037) and energy balance (−0.732, p = 0.039). In addition, relative power output was correlated with mRMR/pRMR (−0.763, p = 0.046). (4) Conclusions: This study is the first to show that WDEB$_{−300}$ in competitive female cyclists is greater in cyclists with risk for RED-S. Increased time in a catabolic state was correlated to worse anaerobic capacity in incremental testing. Measuring mRMR/pRMR might be useful as it was negatively associated with aerobic performance.

• Jezik: Angleški jezik
• Ključne besede: sport, low energy availability, relative energy deficiency in sport, road cycling, within-day energy deficiency, resting energy expenditure, energy balance, female cycling, LEAF questionnaire
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FŠ - Fakulteta za šport
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2020
• Št. strani: 11 str.
• Številčenje: Vol. 10, iss. 21, art. 7563
• PID: 20.500.12556/RUL-134729
• UDK: 796.61-055.2
• ISSN pri članku: 2076-3417
• DOI: 10.3390/app10217563
• COBISS.SI-ID: 35024387
• Datum objave v RUL: 27.01.2022

JUROV, Iva, HADŽIĆ, Vedran in RAUTER, Samo, 2020, Markers of energy metabolism affect lactate metabolism and aerobic performance in competitive female cyclists. Applied sciences [na spletu]. 2020. Vol. 10, no. 21,  7563. [Dostopano 3 julij 2025]. DOI 10.3390/app10217563. Pridobljeno s: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=slv&id=134729

Gradivo je del revije

• Naslov: Applied sciences
• Skrajšan naslov: Appl. sci.
• Založnik: MDPI
• ISSN: 2076-3417
• COBISS.SI-ID: 522979353

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 01.11.2020

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: šport, kolesarstvo, nizka energijska razpoložljivost, sindrom relativnega energijskega primankljaja, cestno kolesarstvo, cestno kolesarjenje, energijski primanjkljaj znotraj dneva, energijska poraba v mirovanju, energijsko ravnovesje, žensko kolesarstvo, LEAF vprašalnik

Projekti

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P5-0147
• Naslov: Kineziologija monostrukturnih, polistrukturnih in konvencionalnih športov