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Journal of clinical medicine
Aug 15, 2024;13 (16):

Sex Differences in the Energy System Contribution during Sprint Exercise in Speed-Power and Endurance Athletes.

Damian Archacki, Jacek Zieliński, Monika Ciekot-Sołtysiak, Ewa Anna Zarębska, Krzysztof Kusy
Author Information
  1. Damian Archacki: Department of Athletics, Strength and Conditioning, Poznan University of Physical Education, Królowej Jadwigi Street 27/39, 61-871 Poznań, Poland. ORCID
  2. Jacek Zieliński: Department of Athletics, Strength and Conditioning, Poznan University of Physical Education, Królowej Jadwigi Street 27/39, 61-871 Poznań, Poland. ORCID
  3. Monika Ciekot-Sołtysiak: Department of Athletics, Strength and Conditioning, Poznan University of Physical Education, Królowej Jadwigi Street 27/39, 61-871 Poznań, Poland. ORCID
  4. Ewa Anna Zarębska: Department of Athletics, Strength and Conditioning, Poznan University of Physical Education, Królowej Jadwigi Street 27/39, 61-871 Poznań, Poland. ORCID
  5. Krzysztof Kusy: Department of Athletics, Strength and Conditioning, Poznan University of Physical Education, Królowej Jadwigi Street 27/39, 61-871 Poznań, Poland. ORCID
PMID: 39200953 DOI: 10.3390/jcm13164812

Abstract

: A high level of specific metabolic capacity is essential for maximal sprinting in both male and female athletes. Various factors dictate sex differences in maximal power production and energy utilization. This study aims to compare the contribution of energy systems between male and female athletes with similar sport-specific physiological adaptations during a 15-s sprint exercise. : The endurance group consisted of 17 males (23 ± 7 y) and 17 females (20 ± 2 y). The speed-power group included 14 males (21.1 ± 2.6 y) and 14 females (20 ± 3 y). The contribution of phosphagen, glycolytic, and aerobic systems was determined using the three-component PCr-LA-O method. : Significant differences were observed in the energy expenditure for all systems and total energy expenditure between males and females in both groups ( = 0.001-0.013). The energy expenditure in kJ for individual systems (phosphagen-glycolytic-aerobic) was 35:25:7 vs. 20:16:5 in endurance males vs. female athletes, respectively. In the speed-power group, male athletes expended 33:37:6 kJ and female athletes expended 21:25:4 kJ, respectively. The percentage proportions did not differ between males and females in any system. The contribution of the phosphagen-glycolytic-aerobic systems was 52:37:11 vs. 48:39:13 in endurance male and female athletes, respectively. For speed-power males vs. female athletes, the proportions were 42:50:8 vs. 41:50:9, respectively. Despite the differences in body composition, mechanical output, and absolute energy expenditure, the energy system contribution appears to have a similar metabolic effect between male and female athletes engaged in sprint exercises with similar sport-related adaptations. The magnitude and profile of sex differences are related to sports discipline.

Keywords

aerobic energy expenditure glycolytic phosphagen sex differences sprint

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Grants

  1. Decision no 627/20/Poznan University of Physical Education
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