Carrasco Fernando, Arias-Tellez Maria Jose, Solar-Altamirano Ignacio, Inostroza Jorge, Carrasco Gabriela
Department of Nutrition, Faculty of Medicine, University of Chile, Independence 1027, Santiago 8380000, Chile.
Department of Physical Education and Sports, Faculty of Sport Sciences, Sport and Health University Research Institute (iMUDS), University of Granada, 18071 Granada, Spain.
J Funct Morphol Kinesiol. 2024 Nov 12;9(4):228. doi: 10.3390/jfmk9040228.
To compare the body composition of Chilean climbers of different performance levels and to determine the relation between the forearm and upper-trunk lean mass and the handgrip and upper-body traction strength, respectively. A cross-sectional study was carried out on thirty Chilean male adult climbers (26.1 ± 4.9 y.): nine of intermediate level (L1), eleven advanced (L2), and ten elite (L3). Through dual-energy X-Ray absorptiometry (DXA; Lunar Prodigy), fat mass percentage (FM%), total lean mass (LM), forearm lean mass (FLM), and upper-trunk lean mass (UTLM) were measured. Total muscle mass (TMM) was also estimated. Handgrip strength (HGS) was measured with a Jamar dynamometer. Maximum upper-body traction strength (UBTS) was evaluated with a standardized movement. The level of climbing was assessed according to IRCRA rules. No differences in FM%, total LM, UTLM, or TMM between the groups were found. Left and assistant FLM were significantly higher in L3 ( = 0.047 and 0.041, respectively). HGS absolute, relative, and adjusted by FLM were not different between groups. FLM was associated with HGS in all segments ( ≤ 0.001). UBTS absolute values, and as adjusted by TMM, were significantly higher in L3 ( = 0.047 and = 0.049, respectively). Left and non-dominant forearm lean mass were significantly higher in elite climbers. Handgrip strength was not significantly higher in elite climbers; however, the upper-body traction strength was significantly higher in elite climbers, independent of total or regional muscle mass.
比较不同表现水平的智利登山者的身体成分，并分别确定前臂和上躯干瘦体重与握力和上身牵引力量之间的关系。对30名智利成年男性登山者（26.1±4.9岁）进行了一项横断面研究：9名中级水平（L1）、11名高级水平（L2）和10名精英水平（L3）。通过双能X射线吸收法（DXA；Lunar Prodigy）测量脂肪质量百分比（FM%）、总瘦体重（LM）、前臂瘦体重（FLM）和上躯干瘦体重（UTLM）。还估算了总肌肉质量（TMM）。用Jamar测力计测量握力（HGS）。通过标准化动作评估最大上身牵引力量（UBTS）。根据国际攀岩竞赛规则协会（IRCRA）的规则评估攀登水平。未发现各组之间在FM%、总LM、UTLM或TMM方面存在差异。L3组的左侧和辅助FLM显著更高（分别为P = 0.047和0.041）。各组之间HGS的绝对值、相对值以及经FLM调整后的数值没有差异。在所有节段中，FLM与HGS相关（P≤0.001）。L3组的UBTS绝对值以及经TMM调整后的数值显著更高（分别为P = 0.047和P = 0.049）。精英登山者的左侧和非优势前臂瘦体重显著更高。精英登山者的握力没有显著更高；然而，精英登山者的上身牵引力量显著更高，与总肌肉质量或局部肌肉质量无关。
