A low-cost quantitative continuous measurement of movements in the extremities of men with Parkinson’s disease

Detection of movements in the extremities of people in Parkinson disease was developed to enhance the gold-standard structured assessment of people with Parkinson’s disease assessed by the visual observation by the examiner of the person with Parkinson’s disease (Goetz, et al., 2008).The examiner administered a low-cost quantitative continuous measurement of movements of the extremities of people with Parkinson’s disease (McKay, et al., 2019) to men with Parkinson’s disease in person. The examiner instructed the participant how to perform each task. The examiner demonstrated the movements. The examiner did not continue to perform the task while the participant was performing the tasks. The examiner instructed the participant to perform each movement as quickly and fully as possible. The examiner encouraged the participant to execute each motion with the maximal speed and range of motion. The examiner sought to capture at least 60 optimal repetitions for each motion. The data from this procedure performed on cohorts of individuals with Parkinson’s disease and multiple system atrophy and healthy age- and sex-matched individuals with typical development have been published (Harrigan, et al., 2020; Hernandez, et al., 2022).The data from the participants are included in the publications (Harrigan, et al., 2020; Hernandez, et al., 2022). Two experts certified in the MDS-UPDRS (Goetz, et al., 2008) then edited the original videotapes to extract only the administration of each task. One expert had participated as examiner and participant in the videotaped segments. The videotape segments correspond to the tasks of the protocol (3.17RTU: 3.17 Rest tremor amplitude upper limbs, 3.17RTUC: 3.17 Rest tremor amplitude upper limbs counting, 3.15PT: 3.15 Postural tremor of the hands, 3.4FT: 3.4 Finger tapping, 3.5HM: 3.5 Hand movements, 3.6PS: 3.6 Pronation-supination movements of the hands, 3.9ACU: 3.9 Arising from chair upper limbs, 3.9ACL: 3.9 Arising from chair upper limbs, 3.17RTL: 3.17 Rest tremor amplitude lower limbs, 3.17RTLC: 3.17 Rest tremor amplitude lower limbs counting, 3.7TT: 3.7 Toe tapping, 3.8LA: 3.8 Leg agility) (McKay, et al., 2019).