Vera Jesús, Jiménez Raimundo, Redondo Beatriz, Cárdenas David, De Moraes Carlos Gustavo, Garcia-Ramos Amador
*Department of Optics, Faculty of Science †Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain ‡Department of Ophthalmology, Columbia University Medical Centre, New York, NY §Universidad Católica de la Santísima Concepción, Facultad de Educación, Concepción, Chile.
J Glaucoma. 2017 Oct;26(10):881-887. doi: 10.1097/IJG.0000000000000749.
This study investigated the acute effect of maximal cycling sprint against difference resistances on intraocular pressure (IOP) depending on participants' fitness level.
In total, 26 physically active collegiate men performed 5 maximal cycling sprints against different resistances in a randomized order, and IOP was measured immediately before and after each sprint. Participants were divided in 2 subgroups (low fit and high fit) according to their maximum power output relative to body weight to assess the influence of fitness level. Two identical testing sessions were performed to assess the repeatability of IOP values.
We found that IOP decreases with the lightest resistance (P<0.01), whereas IOP increases with heavier resistances (P<0.01), and it showed a positive linear tendency (r=0.99). Our results suggest that participants' fitness level seems to influence IOP responses, with a more stable response in the high-fit group. A strong intersession repeatability of IOP values was observed (intraclass correlation coefficient range, 0.82 to 0.98; coefficients of variations range, 1.76% to 6.23%).
We conclude that (1) IOP is sensitive to cycling resistance in all-out sprints, with a lowering effect on the lightest resistance and an increasing effect with medium and heavy resistances, (2) high fitness level is beneficial to avoid IOP fluctuations during sprints, and (3) these changes are comparable when measured on 2 different days under the same experimental conditions. A progressive involvement in physical activity may be desirable to avoid IOP peaks during highly demanding physical effort. Future studies are needed to clarify the consequences of exercise in glaucoma patients.
本研究调查了针对不同阻力进行最大强度自行车冲刺对眼压（IOP）的急性影响，该影响取决于参与者的健康水平。
总共26名身体活跃的大学男生以随机顺序针对不同阻力进行了5次最大强度自行车冲刺，并在每次冲刺前后立即测量眼压。根据相对于体重的最大功率输出，将参与者分为2个亚组（低健康水平组和高健康水平组），以评估健康水平的影响。进行了两次相同的测试，以评估眼压值的可重复性。
我们发现，使用最轻阻力时眼压降低（P<0.01），而使用较重阻力时眼压升高（P<0.01），并且呈现出正线性趋势（r=0.99）。我们的结果表明，参与者的健康水平似乎会影响眼压反应，高健康水平组的反应更稳定。观察到眼压值具有很强的组间可重复性（组内相关系数范围为0.82至0.98；变异系数范围为1.76%至6.23%）。
我们得出以下结论：（1）在全力冲刺中，眼压对骑行阻力敏感，最轻阻力会降低眼压，中、重阻力会升高眼压；（2）高健康水平有利于避免冲刺过程中眼压波动；（3）在相同实验条件下于不同日期测量时，这些变化具有可比性。为避免在高强度体力活动期间出现眼压峰值，可能需要逐步增加体育活动。未来需要开展研究以阐明运动对青光眼患者的影响。
