Stavrou Vasileios, Tsarouhas Konstantinos, Karetsi Eleni, Michos Panagiotis, Daniil Zoe, I Gourgoulianis Konstantinos
Laboratory of Cardio-Pulmonary Testing, Department of Respiratory Medicine, University of Thessaly, 41110 Larissa, Greece.
School of Physical Education and Sports Science, University of Thessaly, Karyes, 42100 Trikala, Greece.
Sports (Basel). 2018 Aug 10;6(3):78. doi: 10.3390/sports6030078.
The purpose of our study was to investigate early differences in the adolescent female finswimmers' echocardiography parameters, possibly associated with different swimming-style training and different training equipment (monofin (MF) versus bifin (BF)).
Forty-three female finswimmers participated in our study (age: 15.6 ± 2.1 years, body mass index: 20.4 ± 2.2 kg/m², body surface area: 1.56 ± 0.04 m², body fat: 11.2 ± 0.6%) and were divided into two groups, according to the swimming style practiced (MF vs BF). Anthropometric characteristics, echocardiography and arterial pressure were measured. The independent -test was used for statistical comparisons between groups. Stepwise multivariate regression analysis was applied to investigate associations between various variables.
The two groups used training equipment with different weights ( < 0.001). Female adolescent finswimmers presented signs of myocardial hypertrophy depicted by the increased left ventricle myocardial mass indexed to body surface area (101.34 ± 23.65). Different patterns of myocardial hypertrophy were observed for the two groups; MF swimmers presented concentric hypertrophy, while BF swimmers presented eccentric hypertrophy (relative wall thickness MF = 0.46 ± 0.08 vs BF = 0.39 ± 0.06 cm, < 0.05). MF swimmers had also higher left ventricular posterior wall diameters ( < 0.05), lower stroke volume values ( < 0.05) and lower ejection fraction ( < 0.05) compared to BF athletes.
Adolescent female finswimmers presented different patterns of myocardial hypertrophy possibly related to different training protocols and modes of exercise.
我们研究的目的是调查青少年女子蹼泳运动员超声心动图参数的早期差异，这些差异可能与不同的游泳方式训练和不同的训练设备（单蹼（MF）与双蹼（BF））有关。
43名女子蹼泳运动员参与了我们的研究（年龄：15.6±2.1岁，体重指数：20.4±2.2kg/m²，体表面积：1.56±0.04m²，体脂：11.2±0.6%），并根据所练习的游泳方式（MF对BF）分为两组。测量人体测量学特征、超声心动图和动脉压。采用独立样本t检验进行组间统计比较。应用逐步多元回归分析来研究各种变量之间的关联。
两组使用的训练设备重量不同（P<0.001）。青少年女子蹼泳运动员表现出心肌肥厚的迹象，表现为体表面积指数化的左心室心肌质量增加（101.34±23.65）。两组观察到不同的心肌肥厚模式；MF游泳运动员表现为向心性肥厚，而BF游泳运动员表现为离心性肥厚（相对室壁厚度MF = 0.46±0.08 vs BF = 0.39±0.06cm，P<0.05）。与BF运动员相比，MF游泳运动员的左心室后壁直径也更大（P<0.05），每搏量值更低（P<0.05），射血分数更低（P<0.05）。
青少年女子蹼泳运动员表现出不同的心肌肥厚模式，可能与不同的训练方案和运动方式有关。
