Massini Danilo A, Macedo Anderson G, Almeida Tiago A F, Espada Mário C, Santos Fernando J, Castro Eliane A, Ferreira Daniel C P, Neiva Cassiano M, Pessôa Filho Dalton M
Graduate Programme in Human Development and Technology, São Paulo State University (UNESP), Rio Claro 13506-900, Brazil.
Department of Physical Education, São Paulo State University (UNESP), Bauru 17033-360, Brazil.
Int J Environ Res Public Health. 2022 Mar 28;19(7):4020. doi: 10.3390/ijerph19074020.
This study aimed to analyze whether the relationship between regional and whole-body fat-free mass (FFM) and strength is related to FFM distribution and area according to limb involvement. Thirty well-trained male young adults underwent one-repetition maximum test (1RM) to assess the strength in arm curl (AC), bench press (BP), seated row (SR), leg press 45° (LP45), knee extension (KE), and leg curl (LC). Dual-energy X-ray absorptiometry was used to evaluate FFM. The values for 1RM in AC, BP, and R correlated to FFM in upper limb (R = 0.69, 0.84 and 0.75), without an effect of appendicular mass index (API) or area. For 1RM in KE, the correlation with FFM in lower limb increased with thigh area (R = 0.56), whereas 1RM in LC and LP45 correlation to whole-body FFM increased with API (R = 0.64 and 0.49). The upper limb's FFM may be reliable for indexing the arms and upper trunk strengths, whereas the relationships between FFM and strength in lower limb improve as muscle mass and thigh area increases between subjects.
本研究旨在分析根据肢体受累情况，局部和全身无脂肪质量（FFM）与力量之间的关系是否与FFM分布和面积相关。30名训练有素的年轻男性成年人接受了一次重复最大值测试（1RM），以评估他们在弯举（AC）、卧推（BP）、坐姿划船（SR）、45°腿举（LP45）、伸膝（KE）和腿弯举（LC）中的力量。采用双能X线吸收法评估FFM。AC、BP和R中1RM的值与上肢FFM相关（R = 0.69、0.84和0.75），不受附属质量指数（API）或面积的影响。对于KE中的1RM，与下肢FFM的相关性随大腿面积增加（R = 0.56），而LC和LP45中的1RM与全身FFM的相关性随API增加（R = 0.64和0.49）。上肢的FFM可能是衡量手臂和上躯干力量的可靠指标，而下肢FFM与力量之间的关系会随着受试者之间肌肉质量和大腿面积的增加而改善。
