Institute for Kinesiology Research, Science and Research Center Koper, Koper, Slovenia.
Faculty of Kinesiology, University of Split, Split, Croatia.
Appl Physiol Nutr Metab. 2021 Nov;46(11):1425-1429. doi: 10.1139/apnm-2021-0294. Epub 2021 Jun 24.
This manuscript quantified spleen volume changes and examined the relationship between those changes and oxygen uptake kinetics during supine cycling. Ten volunteers (age = 22 ± 3), completed 3 step transitions from 20 W to their power output at 90% gas exchange threshold. Ultrasonic measurements of the spleen were performed each minute. The largest spleen volume reduction was 105 mL ( = 0.001). No associations existed between ) spleen volumes at rest; and ) spleen volume changes (%) and tau pulmonary oxygen uptake (τO). Larger resting spleen volume and greater emptying do not correlate with a faster τO. Greater splenic contractions do not augment τO, irrespective of spleen emptying and subsequent erythrocyte release.
本手稿定量分析了脾脏体积的变化，并研究了这些变化与仰卧位自行车运动期间摄氧量动力学之间的关系。10 名志愿者（年龄=22±3 岁），从 20W 逐步增加到 90%气体交换阈值的功率输出。每分钟对脾脏进行超声测量。脾脏最大体积减少 105mL（=0.001）。静止时的脾脏体积之间没有相关性；以及）脾脏体积变化（%）和肺部摄氧量动力学时间常数（τO）之间没有相关性。较大的静止脾脏体积和更大的排空量与较快的τO无关。脾脏收缩幅度的增加并不能加速 τO，与脾脏排空和随后的红细胞释放无关。
