{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T02:33:53Z","timestamp":1760236433118,"version":"build-2065373602"},"reference-count":36,"publisher":"MDPI AG","issue":"23","license":[{"start":{"date-parts":[[2021,11,23]],"date-time":"2021-11-23T00:00:00Z","timestamp":1637625600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Essential tremor (ET) is a movement disorder that may cause functional disability in daily activities, such as drinking from a cup or drawing. This study aims to characterize effects of varied cup-grip types and measured axes on the actual performance of people with ET and find correlations between cup-grip type and measured axes, and spiral drawing measures. Participants (20 with ET and 18 controls) held a cup of water in a steady position in three grip types and drew a spiral. The cup acceleration was measured by the cup triaxial accelerometer, analyzed in X, Y and Z axes (directions); deviation of the measured acceleration from the desired steady position acceleration was computed. Significant group differences were found for outcome measures in all grip types. Among participants with ET, significantly higher measured values were found in the cup\u2019s horizontal plane (X and Y axes) compared to the vertical direction (Z axis) and for on-the-handle versus around-the-cup grips in the X and Y axes. Significant correlations were found between this grip\u2019s measures and spiral-drawing actual performance measures, indicating the measurement axis and grip type may affect actual performance. These findings may support the future development of assistive devices for tremor suppression and personalized supportive therapy.<\/jats:p>","DOI":"10.3390\/s21237797","type":"journal-article","created":{"date-parts":[[2021,12,1]],"date-time":"2021-12-01T01:45:02Z","timestamp":1638323102000},"page":"7797","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Does Cup-Grip Type Affect Tremor among People with Essential Tremor?"],"prefix":"10.3390","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7211-7545","authenticated-orcid":false,"given":"Navit","family":"Roth","sequence":"first","affiliation":[{"name":"The Laboratory of Complex Human Activity and Participation (CHAP), Department of Occupational Therapy, University of Haifa, Haifa 3498838, Israel"},{"name":"Department of Mechanical Engineering, ORT Braude Academic College of Engineering, Karmiel 2161002, Israel"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8666-0389","authenticated-orcid":false,"given":"Sara","family":"Rosenblum","sequence":"additional","affiliation":[{"name":"The Laboratory of Complex Human Activity and Participation (CHAP), Department of Occupational Therapy, University of Haifa, Haifa 3498838, Israel"}]}],"member":"1968","published-online":{"date-parts":[[2021,11,23]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"313","DOI":"10.1002\/mds.10003","article-title":"Is essential tremor predominantly a kinetic or a postural tremor? A clinical and electrophysiological study","volume":"17","author":"Brennan","year":"2002","journal-title":"Mov. Disord."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"28","DOI":"10.5334\/tohm.632","article-title":"How Common is Essential Tremor? Update on the Worldwide Prevalence of Essential Tremor","volume":"11","author":"Louis","year":"2021","journal-title":"Tremor Other Hyperkinetic Mov."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"353","DOI":"10.1007\/s11910-013-0353-4","article-title":"What is Essential Tremor?","volume":"13","author":"Elble","year":"2013","journal-title":"Curr. Neurol. Neurosci. Rep."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"805","DOI":"10.1093\/brain\/117.4.805","article-title":"A study of hereditary essential tremor","volume":"117","author":"Bain","year":"1994","journal-title":"Brain"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"914","DOI":"10.1002\/mds.1184","article-title":"Correlates of functional disability in essential tremor","volume":"16","author":"Louis","year":"2001","journal-title":"Mov. Disord."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"17","DOI":"10.1016\/S1353-8020(99)00028-0","article-title":"Columbia University Assessment of Disability in Essential Tremor (CADET): Methodological issues in essential tremor research","volume":"6","author":"Wendt","year":"2000","journal-title":"Parkinsonism Relat. Disord."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"841","DOI":"10.1001\/archneur.56.7.841","article-title":"Validity of a performance-based test of function in essential tremor","volume":"56","author":"Louis","year":"1999","journal-title":"Arch. Neurol."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"516","DOI":"10.1002\/1531-8257(200005)15:3<516::AID-MDS1015>3.0.CO;2-J","article-title":"Validity and test-retest reliability of a disability questionnaire for essential tremor","volume":"15","author":"Louis","year":"2000","journal-title":"Mov. Disord."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"868","DOI":"10.1136\/jnnp.56.8.868","article-title":"Assessing tremor severity","volume":"56","author":"Bain","year":"1993","journal-title":"J. Neurol. Neurosurg. Psychiatry"},{"key":"ref_10","doi-asserted-by":"crossref","unstructured":"Hess, C.W., and Pullman, S.L. (2012). Tremor: Clinical phenomenology and assessment techniques. Tremor Other Hyperkinetic Mov., 2.","DOI":"10.5334\/tohm.115"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"537","DOI":"10.1016\/j.parkreldis.2011.04.017","article-title":"Essential tremor quantification during activities of daily living","volume":"17","author":"Heldman","year":"2011","journal-title":"Parkinsonism Relat. Disord."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"393","DOI":"10.1111\/j.1600-0404.2004.00251.x","article-title":"Subdivision of essential tremor patients according to physiologic characteristics","volume":"109","author":"Golan","year":"2004","journal-title":"Acta Neurol. Scand."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"70","DOI":"10.1002\/mds.870110113","article-title":"Quantification of essential tremor in writing and drawing","volume":"11","author":"Elble","year":"1996","journal-title":"Mov. Disord."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"79","DOI":"10.1016\/j.parkreldis.2017.05.018","article-title":"Task-dependent variability of Essential Tremor","volume":"41","author":"Schuhmayer","year":"2017","journal-title":"Parkinsonism Relat. Disord."},{"key":"ref_15","doi-asserted-by":"crossref","unstructured":"Roth, N., Braun-Benyamin, O., and Rosenblum, S. (2021). Drawing Direction Effect on a Task\u2019s Performance Characteristics among People with Essential Tremor. Sensors, 21.","DOI":"10.3390\/s21175814"},{"key":"ref_16","doi-asserted-by":"crossref","unstructured":"Jeon, H., Lee, W.-W., Park, H., Lee, H.J., Kim, S.K., Kim, H.B., Jeon, B., and Park, K.S. (2017). Automatic Classification of Tremor Severity in Parkinson\u2019s Disease Using a Wearable Device. Sensors, 17.","DOI":"10.3390\/s17092067"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"1399","DOI":"10.3390\/s100201399","article-title":"Neurological Tremor: Sensors, Signal Processing and Emerging Applications","volume":"10","author":"Grimaldi","year":"2010","journal-title":"Sensors"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"375","DOI":"10.5334\/tohm.320","article-title":"Using Portable Transducers to Measure Tremor Severity","volume":"6","author":"Elble","year":"2016","journal-title":"Tremor Other Hyperkinetic Mov."},{"key":"ref_19","unstructured":"Roth, N., and Rosenblum, S. What are the functional daily characteristics of people with essential tremor?, Submitted."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"412","DOI":"10.1016\/j.parkreldis.2010.04.001","article-title":"The Glass scale: A simple tool to determine severity in essential tremor","volume":"16","author":"Gironell","year":"2010","journal-title":"Parkinsonism Relat. Disord."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"54","DOI":"10.1007\/BF00870673","article-title":"Assessing the impact of essential tremor on upper limb function","volume":"241","author":"Bain","year":"1993","journal-title":"J. Neurol."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"568","DOI":"10.1136\/jnnp.50.5.568","article-title":"Differential effects of changes in mechanical limb properties on physiological and pathological tremor","volume":"50","author":"Homberg","year":"1987","journal-title":"J. Neurol. Neurosurg. Psychiatry"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"688","DOI":"10.1007\/s12311-015-0732-2","article-title":"Correlates Between Force and Postural Tremor in Older Individuals with Essential Tremor","volume":"15","author":"Kavanagh","year":"2015","journal-title":"Cerebellum"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"1547","DOI":"10.1212\/WNL.55.10.1547","article-title":"Essential tremor frequency decreases with time","volume":"55","author":"Elble","year":"2000","journal-title":"Neurology"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"437","DOI":"10.5014\/ajot.34.7.437","article-title":"Patterns of Static Prehension in Normal Hands","volume":"34","author":"Kamakura","year":"1980","journal-title":"Am. J. Occup. Ther."},{"key":"ref_26","first-page":"772","article-title":"Norms for grip agreement for 296 photographs of objects","volume":"45","year":"2012","journal-title":"Behav. Res. Methods"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"51","DOI":"10.3389\/fneur.2013.00051","article-title":"Postural and Intention Tremors: A Detailed Clinical Study of Essential Tremor vs. Parkinson\u2019s Disease","volume":"4","author":"Sternberg","year":"2013","journal-title":"Front. Neurol."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"1020","DOI":"10.1016\/j.clinph.2009.03.012","article-title":"The effect of inertial loading on wrist postural tremor in essential tremor","volume":"120","author":"Pari","year":"2009","journal-title":"Clin. Neurophysiol."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"1294","DOI":"10.1002\/mds.20915","article-title":"Axis is a feature of handwritten spirals in essential tremor","volume":"21","author":"Louis","year":"2006","journal-title":"Mov. Disord."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"34","DOI":"10.29245\/2572.942X\/2016\/4.1038","article-title":"The Essential Tremor Rating Assessment Scale","volume":"1","author":"Elble","year":"2016","journal-title":"J. Neurol. Neuromed."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"189","DOI":"10.1016\/0022-3956(75)90026-6","article-title":"\u201cMini-mental state\u201d. A practical method for grading the cognitive state of patients for the clinician","volume":"12","author":"Folstein","year":"1975","journal-title":"J. Psychiatr. Res."},{"key":"ref_32","doi-asserted-by":"crossref","unstructured":"Lin, P.-C., Chen, K.-H., Yang, B.-S., and Chen, Y.-J. (2018). A digital assessment system for evaluating kinetic tremor in essential tremor and Parkinson\u2019s disease. BMC Neurol., 18.","DOI":"10.1186\/s12883-018-1027-2"},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"309","DOI":"10.1016\/j.jneumeth.2006.09.019","article-title":"Digitised spirography as an evaluation tool for intention tremor in multiple sclerosis","volume":"160","author":"Feys","year":"2007","journal-title":"J. Neurosci. Methods"},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"178","DOI":"10.1007\/s12311-018-0974-x","article-title":"Repeated Spiral Drawings in Essential Tremor: A Possible Limb-Based Measure of Motor Learning","volume":"18","author":"Kim","year":"2019","journal-title":"Cerebellum"},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"498","DOI":"10.1007\/s12311-015-0717-1","article-title":"Prehension Kinematics, Grasping Forces, and Independent Finger Control in Mildly Affected Patients with Essential Tremor","volume":"15","author":"Solbach","year":"2015","journal-title":"Cerebellum"},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"250","DOI":"10.1016\/j.parkreldis.2006.04.010","article-title":"Tremor magnitude: A single index to assess writing and drawing in essential tremor","volume":"13","author":"Homann","year":"2007","journal-title":"Parkinsonism Relat. Disord."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/21\/23\/7797\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T07:34:46Z","timestamp":1760168086000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/21\/23\/7797"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,11,23]]},"references-count":36,"journal-issue":{"issue":"23","published-online":{"date-parts":[[2021,12]]}},"alternative-id":["s21237797"],"URL":"https:\/\/doi.org\/10.3390\/s21237797","relation":{},"ISSN":["1424-8220"],"issn-type":[{"type":"electronic","value":"1424-8220"}],"subject":[],"published":{"date-parts":[[2021,11,23]]}}}