ĐÁNH GIÁ MỐI LIÊN QUAN GIỮA MỘT SỐ CHỈ SỐ THÀNH PHẦN CƠ THỂ VÀ THỂ TÍCH OXY TIÊU THỤ TỐI ĐA (VO2 MAX) CỦA HỌC VIÊN HỌC VIỆN QUÂN Y

Abstract

Objectives: To investigate and assess the association between body composition parameters and maximal oxygen consumption (VO₂ max). Methods: A cross-sectional descriptive analytical study was conducted on 88 male cadets, divided into first-year (n = 46) and fifth-year (n = 42) cadets at Vietnam Military Medical University from November 2024 to May 2025. Body composition parameters, including BMI, total body water (TBW), extracellular water (ECW), protein, skeletal muscle mass (SMM), body fat mass (BFM), percent body fat (PBF), visceral fat area (VFA), and minerals, were assessed using the InBody S10 device. VO₂ max was measured using a cycle ergometer connected to a PowerLab system. Results: Height, weight, and BMI were comparable between the two groups (p > 0.05). First-year cadets exhibited significantly higher TBW, ECW, protein, SMM, and VO₂ max values (p < 0.05). VO₂ max decreased progressively with increasing BFM and PBF (p < 0.05). A lower body fat percentage was associated with a higher likelihood of achieving good VO₂ max (p = 0.02; OR = 2.9). Conclusion: The difference in the association between body composition parameters and VO₂ max between the two groups of cadets was primarily related to variations in body fat composition. A low body fat percentage was an independent factor associated with superior VO₂ max performance.