Baranauskienė Neringa, Kilikevičienė Sandra, Stasiulė Loreta, Civinskienė Genuvaitė, Stasiulis Arvydas
Institute of Sport Science and Innovations, Lithuanian Sports University, Kaunas, Lithuania.
Institute of Sport Science and Innovations, Lithuanian Sports University, Kaunas, Lithuania; Department of Applied Biology and Rehabilitation, Faculty of Sport Biomedicine, Lithuanian Sports University, Kaunas, Lithuania.
Medicina (Kaunas). 2017 Dec;53(5):331-338. doi: 10.1016/j.medici.2017.10.001. Epub 2017 Nov 1.
Unaccustomed eccentric or eccentric-concentric exercise leaves us stiff and sore the next day and can cause muscle damage. The data about the residual effect of prior eccentric-concentric exercises on oxygen uptake (VO) during constant cycling exercise in women or the data about differences of such effect between genders are scarce. Therefore, the aim of this study was to assess differences of the residual effect of PDJ on VO during HCE and indirect muscle damage parameters between women and men.
The study aimed to asses differences of the residual effect of prior drop jumps (PDJ) on VO during heavy cycling exercise (HCE) and indirect muscle damage parameters between men (n=8) and women (n=11). On four different days participants performed one incremental cycling exercise and three HCE (control [CON], 45min [45' PDJ] and 24h [24h PDJ] after 100 drop jumps). The intensity of HCE was set to work rate corresponding to 50% of the difference between the second and the first ventilatory thresholds which were determined analyzing pulmonary gas exchange parameters during incremental cycling exercise. Capillary blood samples were collected in order to measure blood lactate concentration immediately after HCE and serum creatine kinase (CK) activity 24h after PDJ. Subjects rated perceived exertion and delayed onset muscle soreness (DOMS) using 20 and 10 point scales, respectively.
VO at 3-6min of HCE performed 45' after PDJ was significantly increased as compared to CON HCE only in the male group. Both men and women felt moderate muscle pain. CK activity was significantly increased 24h after PDJ in the male group. Both during HCE 45' PDJ and 24h PDJ, the significant positive correlation was observed between relative changes of VO during steady state of HCE and CK activity only in the male group.
Prior eccentric-concentric exercise of thigh muscles (100 drop jumps) accelerates VO kinetics at the start and increases VO during steady state of heavy cycling only in the male group. So, prior exercise of such type has a higher negative impact on cycling economy in men than in women and this might be related to greater muscle damage and fatigue in physically active male persons after plyometric exercise.
不习惯的离心运动或离心 - 向心运动次日会让我们感到僵硬和酸痛，并可能导致肌肉损伤。关于先前离心 - 向心运动对女性持续骑行运动中摄氧量（VO）的残留影响的数据，或关于不同性别间这种影响差异的数据十分匮乏。因此，本研究旨在评估男性和女性在高强度骑行运动（HCE）期间，先前进行的纵跳（PDJ）对VO的残留影响以及间接肌肉损伤参数的差异。
本研究旨在评估男性（n = 8）和女性（n = 11）在高强度骑行运动（HCE）期间，先前进行的纵跳（PDJ）对VO的残留影响以及间接肌肉损伤参数的差异。在四个不同的日子里，参与者进行了一次递增骑行运动和三次HCE（对照组[CON]、100次纵跳后45分钟[45' PDJ]和24小时[24h PDJ]）。HCE的强度设定为对应于递增骑行运动期间分析肺气体交换参数所确定的第二和第一通气阈值之差的50%的工作率。在HCE结束后立即采集毛细血管血样以测量血乳酸浓度，并在PDJ后24小时测量血清肌酸激酶（CK）活性。受试者分别使用20分制和10分制对主观用力程度和延迟性肌肉酸痛（DOMS）进行评分。
与仅CON组的HCE相比，PDJ后45分钟进行的HCE在3 - 6分钟时的VO仅在男性组中显著增加。男性和女性均感到中度肌肉疼痛。男性组在PDJ后24小时CK活性显著增加。仅在男性组中，在HCE 45' PDJ和24h PDJ期间HCE稳定状态下VO的相对变化与CK活性之间均观察到显著正相关。
大腿肌肉先前的离心 - 向心运动（100次纵跳）仅在男性组中加速了开始时的VO动力学，并在高强度骑行的稳定状态下增加了VO。因此，这种类型的先前运动对男性骑行经济性的负面影响高于女性，这可能与有运动习惯的男性在进行增强式运动后更大的肌肉损伤和疲劳有关。
