CLARO (Clinical and Laboratory Applications of Research in Optometry) Laboratory, Department of Optics, Faculty of Sciences, University of Granada, Campus de La Fuentenueva 2, 18001, Granada, Spain.
Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain.
Graefes Arch Clin Exp Ophthalmol. 2023 Jul;261(7):1971-1978. doi: 10.1007/s00417-023-06009-0. Epub 2023 Feb 16.
A variety of factors are known to mediate on the intraocular pressure (IOP) response to resistance training. However, the influence of the body position adopted during resistance training on IOP remain unknown. The objective of this study was to determine the IOP response to the bench press exercise at three levels of intensity when performed in supine and seated positions.
Twenty-three physically active healthy young adults (10 men and 13 women) performed 6 sets of 10 repetitions against the 10-RM (repetition maximum) load during the bench press exercise against three levels of intensity (high intensity: 10-RM load; medium intensity: 50% of the 10-RM load; and control: no external load) and while adopting two different body positions (supine and seated). A rebound tonometer was employed to measure IOP in baseline conditions (after 60 s in the corresponding body position), after each of the 10 repetitions, and after 10 s of recovery.
The body position adopted during the execution of the bench press exercise significantly affected the changes in IOP (p < 0.001, η = 0.83), with the seated position providing lower increases in IOP levels compared to the supine position. There was an association between IOP and exercise intensity, with greater IOP values in the more physically demanding conditions (p < 0.001, η = 0.80).
The use of seated positions, instead of supine positions, for the execution of resistance training should be prioritized for maintaining more stable IOP levels. This set of findings incorporates novel insights into the mediating factors on the IOP response to resistance training. In future studies, the inclusion of glaucoma patients would allow to assess the generalizability of these findings.
已知多种因素可调节阻力训练对眼内压（IOP）的反应。然而，阻力训练过程中所采用的身体姿势对 IOP 的影响尚不清楚。本研究旨在确定在仰卧和坐姿两种体位下，以三种强度水平进行卧推运动时，IOP 对卧推运动的反应。
23 名身体活跃的健康年轻成年人（10 名男性和 13 名女性）在卧推运动中以三种强度水平（高强度：10-RM 负荷；中强度：10-RM 负荷的 50%；对照组：无外部负荷）进行 6 组 10 次重复，同时采用两种不同的身体姿势（仰卧位和座位）。使用回弹眼压计在基线条件下（在相应体位下 60 秒后）、每组 10 次重复后和 10 秒恢复后测量 IOP。
卧推运动执行过程中所采用的身体姿势显著影响 IOP 的变化（p<0.001，η=0.83），与仰卧位相比，座位能降低 IOP 水平的升高。IOP 与运动强度之间存在关联，在要求更高体力的条件下，IOP 值更高（p<0.001，η=0.80）。
在进行阻力训练时，应优先使用坐姿，而不是仰卧位，以保持更稳定的 IOP 水平。这组发现为阻力训练对 IOP 反应的调节因素提供了新的见解。在未来的研究中，纳入青光眼患者将允许评估这些发现的普遍性。
