LBNP survival analysis.

Survival analysis comparing the number of finishers and time of failure for non-finishers during LBNP. Caloric restriction vs. normocaloric intake reduces orthostatic tolerance (χ2, p = 0.03), and CR alone shows a tendency (χ2, p = 0.09) toward reduced orthostatic tolerance independent of bedrest.

本数据集为一项生存分析研究，旨在对比下肢负压试验（Lower Body Negative Pressure, LBNP）中的试验完成者人数，以及未完成试验者的失败时间。该研究对比了热量限制（Caloric restriction, CR）与正常热量摄入对直立耐力（orthostatic tolerance）的影响：相较于正常热量摄入，热量限制可降低受试者的直立耐力（χ²检验，p=0.03）；且仅热量限制组呈现出独立于卧床休息的直立耐力降低趋势（χ²检验，p=0.09）。