Healthy fitness is considered to be closely related to good health. Nowadays, in a modern society, people are less and less active, and high-nutrient intake is increasing. In the face of high-intensity work and life pressure, people’s leisure and entertainment time will increase relatively. When people are deeply aware of the importance of good physical fitness and regular exercise for health. Physical fitness training can bring some positive factors to the body. The purpose of this paper is to study the rationality of fitness assessment indicators for cardiorespiratory fitness in medical systems. In this paper, the cardiopulmonary function and gas metabolism test (K4b2 exercise cardiopulmonary function tester) was carried out by step-by-step incremental load test (CS3000). The subjects wore a breathing mask and a heart rate monitor on a power bicycle for 5 min to measure the gas metabolism in a quiet state. The incremental load motion is then completed on the power bike. At the same time, the three-axis physical activity monitor produced by ActiGraph in the United States was used to test the energy metabolism during exercise and training. The exercise load starts from 25 W, the rotational speed is 60 r/min, each stage increases by 25 W, the load of each stage lasts for 2 min, there is no interval between the levels, and the heart rate, blood pressure and RPE value at the end of each stage are recorded. The experimental results demonstrates that the method has a significant effect on the functional fitness of the elderly with cancer (P < 0.01). The exercise frequency and exercise time have the most significant influence on the fitness of the elderly with cancer (P < 0.001). The muscle strength, flexibility, balance quality and cardiorespiratory strength of the upper and lower limbs were significantly positively correlated with the exercise frequency and each exercise time, but not by the exercise intensity (P > 0.05).

健康健身被认为与身体健康息息相关。如今，在现代社会中，人们的活动越来越少，高养分摄入量也在增加。面对高强度的工作和生活压力，人们的休闲娱乐时间将相对增加。当人们深刻意识到良好的身体健康和定期运动对健康的重要性时。体能训练可以给身体带来一些积极因素。本文的目的是研究适用于医疗系统心肺功能适应性评估指标的合理性。本文通过逐步增加负荷测试（CS3000）进行了心肺功能和气体代谢测试（K4b2运动心肺功能测试仪）。受试者在电动自行车上戴上呼吸面罩和心率监测器5分钟，以测量安静状态下的气体代谢。然后，增量式负载运动在电动自行车上完成。同时，美国ActiGraph生产的三轴身体活动监测仪用于测试运动和训练过程中的能量代谢。运动负荷从25 W开始，转速为60 r / min，每个阶段增加25 W，每个阶段的负荷持续2分钟，各个级别之间没有间隔，并且心率，血压和记录每个阶段结束时的RPE值。实验结果表明，该方法对老年癌症患者的功能适应性有显着影响（P <0.01）。运动频率和运动时间对老年癌症患者的健康影响最大（P <0.001）。上下肢的肌肉力量，柔韧性，平衡质量和心肺力量与运动频率和每次运动时间均呈显着正相关，但与运动强度却无显着正相关（P> 0.05）。