Agreement between fat-free mass from bioelectrical impedance analysis and dual-energy X-ray absorptiometry and their use in estimating resting metabolic rate in resistance-trained men.

IF 4.5 2区医学 Q1 NUTRITION & DIETETICS Journal of the International Society of Sports Nutrition Pub Date : 2024-12-01 Epub Date: 2024-06-28 DOI:10.1080/15502783.2024.2357319

Alex S Ribeiro, Sandro L Sofiati, Witalo Kassiano, Diogo V Martinho, Matheus A Nascimento, Ademar Avelar, Michele C C Trindade, Jerry L Mayhew, Edilson S Cyrino

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Abstract

Background: This study aimed to determine the agreement between fat-free mass (FFM) estimates from bioelectrical impedance analysis (BIA) and dual-energy X-ray absorptiometry (DXA) and their use in estimating resting metabolic rate (RMR) in men undergoing resistance training.

Methods: Thirty healthy resistance-trained men (22.7 ± 4.4 years, 70.0 ± 8.7 kg, 174.6 ± 6.7 cm, and 22.9 ± 2.3 kg/m²) were evaluated. The equation developed by Tinsley et al. (RMR = 25.9 × fat-free mass [FFM] + 284) was adopted to calculate the RMR. DXA was used as the reference method for FFM.

Results: Furthermore, FFM was also estimated by BIA using a spectral device. No significant difference (p > 0.05) was observed between DXA (1884.2 ± 145.5 kcal) and BIA (1849.4 ± 167.7 kcal) to estimate RMR. A positive and significant correlation (r = 0.89, p < 0.05) was observed between DXA and BIA estimates of RMR. The mean difference between methods indicated that BIA presented a bias of -34.8 kcal.

Conclusion: These findings suggest that using FFM derived from DXA or BIA results in similar RMR estimates in resistance-trained men.

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生物电阻抗分析法和双能 X 射线吸收测量法得出的无脂质量与用于估算阻力训练男性静息代谢率之间的一致性。

研究背景本研究旨在确定生物电阻抗分析法（BIA）和双能 X 射线吸收测量法（DXA）估算的无脂体重（FFM）与用于估算接受阻力训练的男性静息代谢率（RMR）之间的一致性：对 30 名健康的阻力训练男性（22.7 ± 4.4 岁，70.0 ± 8.7 千克，174.6 ± 6.7 厘米，22.9 ± 2.3 千克/平方米）进行了评估。采用 Tinsley 等人制定的公式（RMR = 25.9 × 去脂体重 [FFM] + 284）计算 RMR。FFM 采用 DXA 作为参考方法：此外，还使用光谱设备通过 BIA 估算了无脂肪量。在估算 RMR 时，DXA（1884.2 ± 145.5 千卡）和 BIA（1849.4 ± 167.7 千卡）之间无明显差异（P > 0.05）。两者之间存在明显的正相关（r = 0.89，p 结论：DXA（1884.2 ± 145.5 千卡）与 BIA（1849.4 ± 167.7 千卡）之间存在明显的正相关：这些研究结果表明，使用 DXA 或 BIA 得出的 FFM 估算阻力训练男性的 RMR 结果相似。

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来源期刊

Journal of the International Society of Sports Nutrition NUTRITION & DIETETICS-SPORT SCIENCES

CiteScore

8.80

自引率

3.90%

发文量

审稿时长

6-12 weeks

期刊介绍： Journal of the International Society of Sports Nutrition (JISSN) focuses on the acute and chronic effects of sports nutrition and supplementation strategies on body composition, physical performance and metabolism. JISSN is aimed at researchers and sport enthusiasts focused on delivering knowledge on exercise and nutrition on health, disease, rehabilitation, training, and performance. The journal provides a platform on which readers can determine nutritional strategies that may enhance exercise and/or training adaptations leading to improved health and performance.