| Objective:To explore the consistency between the six minute walk test outside the hospital and the six minute walk test inside the hospital in assessing patients’ exercise ability in the population with coronary heart disease,and to further verify the effectiveness of heart rate indicators of six minute walk(6MW)inside and outside the hospital in formulating exercise prescriptions.Methods:In this study,a convenient sampling method was used to select 40 patients with low-risk coronary heart disease and 40 healthy volunteers from the outpatient department of a third class A hospital in Beijing from February 2022 to September2022.The subjects underwent cardiopulmonary exercise tests,in-patient six-minute walking tests,and two out-of-hospital remote six-minute walking tests.The main collected indicators included anaerobic threshold heart rate,6MW peak heart rate,6MW average heart rate,6MW resting heart rate,and measured walking distance in the hospital Walking distance measured by apps inside and outside the hospital.Results:(1)Verify the consistency between the 6MW distance measured by the app in the hospital and the 6MW distance measured in the hospital.The measured distance of the app in the hospital was 521.62 ± 46.04 meters,while the measured walking distance in the hospital was 531.69 ± 12.32 meters,P=0.114>0.05,and ICC=0.883.There was no statistical difference between the two,with high consistency;(2)Verify the consistency between the 6MW distance measured by the app outside the hospital and the 6MW distance measured inside the hospital.The measured distance of the first app outside the hospital was 566.86 ± 69.82 meters,and the measured walking distance inside the hospital was 531.69 ± 12.32 meters,P=0.037<0.05.There was a statistical difference between the two;The second app measurement distance outside the hospital was 552.64 ± 75.44 meters,while the measured walking distance inside the hospital was 531.69 ± 12.32 meters,P=0.1>0.05,and ICC=0.752.There was no statistical difference between the two,with good consistency;(3)The measured distance of the in-hospital app is consistent with the measured distance of the out-of-hospital app.The walking distance measured by the app in the hospital was521.62 ± 46.04 meters,and the distance measured by the app for the first time outside the hospital was 566.86 ± 69.82 meters,P<0.05.There was a statistical difference between the two;The six minute walking distance measured by the app in the hospital was 521.62 ± 46.04 meters,and the second app measurement distance outside the hospital was 552.64 ± 75.44 meters,P>0.05,and ICC=0.71.There was no statistical difference between the two.(4)Comparison of 6MW target heart rate and CPET anaerobic threshold heart rate.1)The target heart rate for 6MW was 104 ± 13 beats per minute,and the anaerobic threshold heart rate was 96 ± 11 beats per minute,P<0.05.There was a statistical difference between the two.2)The target heart rate for6 MW was reduced by 10 beats per minute,with a heart rate of 94 ± 10 beats per minute,and an anaerobic threshold heart rate of 96 ± 11 beats per minute,P=0.592>0.05.There was no statistical difference between the two.3)The target heart rate of 6MW was reduced by 15 beats per minute,the heart rate was 89 ± 10 beats per minute,and the anaerobic threshold heart rate was 96 ± 11 beats per minute,P=0.073>0.05.There was no statistical difference between the two.4)The 6MW heart rate was reduced by 5 beats per minute,the heart rate was 99 ± 10 beats per minute,and the anaerobic threshold heart rate was 96 ± 11 beats per minute,P=0.424>0.05,and ICC=-0.213.There was no statistical difference between the two.(5)Compare the 6MW heart rate reserve method with the anaerobic threshold heart rate.1)The reserve heart rate of 70% of 6MW is 101 ± 10 beats/min,and the anaerobic threshold heart rate is 96 ± 11 beats/min,P<0.05.There is a statistical difference between the two.2)The 60% reserve heart rate of 6MW is 97 ± 10beats/min,and the anaerobic threshold heart rate is 96 ± 11 beats/min,P=0.644>0.05,and ICC=0.877.There is no statistical difference between the two,indicating good consistency.3)The reserve heart rate of 50% of 6MW is 93 ± 9 beats/min,and the anaerobic threshold heart rate is 96 ± 11 beats/min,P=0.142>0.05.There is no statistical difference between the two.(6)Comparison of 6MW mean heart rate and CPET anaerobic threshold heart rate.The average heart rate at 6MW was 100 ± 12beats/min,and the anaerobic threshold heart rate was 96 ± 11 beats/min,P=0.134>0.05,and ICC=0.827.There was no statistical difference between the two,with good consistency.Conclusion The remote six minute walking test is an effective and safe evaluation method,which can be used to remotely evaluate the cardiopulmonary endurance of patients with coronary heart disease.Both the 6MW average heart rate and the 60% reserve heart rate have a high consistency with the anaerobic threshold heart rate,which can be used to establish the sports target heart rate,and the 60% reserve heart rate method is superior to the average heart rate method. |
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