目的:本研究旨在比较每周进行娱乐性运动和阻力运动的个体的左心室(LV)收缩和舒张参数以及左心房(LA)机械功能。
方法:本研究共纳入43名男性业余运动员,其中24人进行阻力练习(REs)(29.70±8.74年,重量:81.70±12.64kg,身高:176.05±7.73厘米,BMI:27.64±4.97kg/m2),和19人参加了休闲足球训练,并被列入休闲运动组(31.73±6.82年,重量:86.00±18.52kg,高度:178.62±4.95厘米,BMI:25.55±3.42kg/m2)。根据每周的锻炼频率和运动量对锻炼进行标准化。记录参与者的人口统计信息后,使用超声心动图(ECHO)和组织多普勒成像测量左心室收缩和舒张参数以及LA机械功能.
结果:娱乐性运动组(REG)和抵抗运动组(RSG)的各种心脏参数存在显着差异。具体来说,左心室(LV)舒张直径,左心室舒张末期容积指数(LVEDVi),与RSG相比,REG中的每搏输出量指数明显更高(分别为t=2.804,p=.010,效应大小(ES)=2.10;t=3.174,p=.003,ES=0.98;t=3.36,p=.002,ES=1.02)。值得注意的是,在LV收缩和舒张参数方面,RSG的LV质量指数(LVMi)和等容舒张时间(IVRT)高于REG(t=2.843,p=.007,ES=0.87;t=2.517,p=.016,ES=0.76).关于左心房(LA)力学,REG显示LA总排空量指数增加,LA最大容积指数,在p波指数开始时测量的收缩期前的LA体积,与RSG相比的导管体积指数(分别为t=2.419,p=.020,ES=0.75;t=2.669,p=.011,ES=0.81;t=2.111,p=.041,ES=0.64;t=2.757,p=.009,ES=0.84)。
结论:我们的研究揭示了REG和RSG之间LV和LA功能的显著差异。我们的数据表明,REs导致实质性的心脏重塑,改变心肌结构和功能。相比之下,娱乐性运动对心脏适应的影响不如抵抗运动明显。因此,我们建议从事娱乐性运动的个人应考虑对更有效的心脏调节施加更高的心血管需求的方式。
This study aimed to compare the left ventricular (LV)
systolic and diastolic parameters and left atrial (LA) mechanical functions of individuals engaging in recreational sports and resistance exercises on a weekly basis.
A total of 43 male amateur athletes were included in this study, of which 24 performed resistance exercises (REs) (29.70 ± 8.74 year, weight: 81.70 ± 12.64 kg, height: 176.05 ± 7.73 cm, BMI: 27.64 ± 4.97 kg/m2), and 19 participated in recreational football training and were included in the recreational sports group (31.73 ± 6.82 year, weight: 86.00 ± 18.52 kg, height: 178.62 ± 4.95 cm, BMI: 25.55 ± 3.42 kg/m2). The exercises were standardized according to the weekly exercise frequency and volume. After recording the participants\' demographic information, the LV
systolic and diastolic parameters and LA mechanical functions were measured using echocardiography (ECHO) and Tissue Doppler Imaging.
Significant differences were observed in various cardiac parameters between the recreational sports group (REG) and resistance exercise Group (RSG). Specifically, the left ventricular (LV) diastolic diameter, LV end diastolic volume index (LVEDVi), and stroke volume index were notably higher in the REG compared to the RSG (t = 2.804, p = .010, effect size (ES) = 2.10; t = 3.174, p = .003, ES = 0.98; t = 3.36, p = .002, ES = 1.02, respectively). Notably, the RSG exhibited higher values for LV mass index (LVMi) and isovolumic relaxation time (IVRT) than the REG (t = 2.843, p = .007, ES = 0.87; t = 2.517, p = .016, ES = 0.76) in terms of LV
systolic and diastolic parameters. Regarding left atrial (LA) mechanics, the REG demonstrated increased LA total emptying volume index, LA maximum volume index, LA volume before systole measured at the onset of the p-wave index, and conduit volume index compared to RSG (t = 2.419, p = .020, ES = 0.75; t = 2.669, p = .011, ES = 0.81; t = 2.111, p = .041, ES = 0.64; t = 2.757, p = .009, ES = 0.84, respectively).
Our study revealed significant variations in LV and LA functions between REG and RSG. Our data suggest that REs led to substantial cardiac remodeling, altering myocardial structure and function. In contrast, the effect of recreational exercise on cardiac adaptation was less pronounced than that of resistance exercise. Consequently, we propose that individuals engaging in recreational exercise should consider modalities that impose higher cardiovascular demand for more effective cardiac conditioning.