Related Experiment Video
Updated: Jun 26, 2026

Skeletal Muscle Gender Dimorphism from Proteomics
Published on: December 14, 2011
Sex-Based Differences in the Physical Capacity Profile of Regional Fencers
Javier Gaviria Chavarro1, Óscar Hernán Jiménez Trujillo2, Miguel Ángel Gómez García2
1Doctoral Program in Applied Sciences, Faculty of Basic Sciences, Universidad Santiago de Cali, Cali 760011, Colombia.
None:
Fencing is an intermittent combat sport in which performance depends on the interaction of neuromuscular qualities, aerobic support, and weapon-specific demands. However, evidence on sex-based differences in the physical capacity profiles of regional fencers remains limited. This study compared the physical capacity profiles of 27 fencers from the Liga Vallecaucana de Esgrima (13 women and 14 men; 14-31 years) in an observational, cross-sectional, comparative study. Field-based assessments included push-ups, sit-ups, squats, jump squats, pull-ups, terminal speed attained in the 20-m shuttle run test, and estimated VO2max. The analysis adopted an exploratory, estimation-oriented approach based on mean differences, 95% confidence intervals, Hedges' g, supplementary significance testing, false discovery rate adjustment, and a directed acyclic graph to clarify causal assumptions. The most robust sex-based difference was observed in pull-up performance, with men outperforming women by 5.43 repetitions (95% CI: 3.51 to 7.45; g = 1.88), and this was the only comparison retained after FDR correction. No conclusive sex-based differences were found for push-ups, sit-ups, squats, jump squats, terminal shuttle-run speed, or estimated VO2max. Mean estimated VO2max for the overall sample was 43.48 ± 9.12 mL·kg-1·min-1. These findings suggest that upper-limb pulling strength may be the main distinguishing physical quality in this cohort, although its implications for individualized conditioning remain to be established. Nevertheless, the results should be interpreted as observational associations rather than causal effects because of the cross-sectional design, the small sample, the field-based measurements, the imbalance in weapon distribution, and the lack of standardized measures of training exposure.
Related Concept Videos
Mate Choice
Classification of Skeletal Muscle Fibers
Slow-Twitch Muscle Fibers
Slow oxidative, muscle fibers appear red due to large numbers of capillaries and high levels of...
Specialized Characteristics of Cardiac Muscles
Cardiac muscle cells are smaller than skeletal muscles, averaging 10–20 mm in diameter and 50–100 mm in length. However, they have large energy demands for continuous contraction and relaxation. This energy is almost exclusively derived from aerobic metabolism of energy reserves in...
Types of Skeletal Muscle Fibers
Fast-twitch fibers
Fast-twitch fibers, or Type II fibers, are designed for quick, powerful bursts of speed and strength. They reach peak tension within approximately 0.01 seconds following stimulation. Characterized by a large diameter and densely packed myofibrils, these fibers contain...
Natural Selection and Mating Preferences
Females, due to their biological roles in conception, pregnancy, and nursing, inherently...
The Y Chromosome Determines Maleness
Evolution
Around 300 million years ago, the two sex chromosomes diverged from two identical autosomal chromosomes. Over time, the Y chromosome has lost most of its genes, shrinking in size. Today,...

