Apple Watch Can Also Determine Physical Weakness

This research was carried out by researchers at Stanford University and funded by Apple. The study provided 110 Veterans Affairs patients with cardiovascular disease with iPhone 7 and Apple Watch Series 3. Patients regularly take a 6-minute walk test at home and compare it with standard outpatient 6MWT performance.

The study found that under clinical supervision, Apple Watch can accurately assess human weakness with a sensitivity of 90% and a specificity of 85%. When the assessment is carried out in an unsupervised environment at home, Apple Watch can accurately assess the degree of fragility of the body, with a sensitivity of 83% and a specificity of 60%.

The results of the study show that passive activity data collected by Apple Watch can accurately predict the performance of outpatient 6MWT.

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