{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,26]],"date-time":"2026-02-26T15:33:55Z","timestamp":1772120035062,"version":"3.50.1"},"reference-count":22,"publisher":"Association for Computing Machinery (ACM)","issue":"4","license":[{"start":{"date-parts":[[2013,6,1]],"date-time":"2013-06-01T00:00:00Z","timestamp":1370044800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.acm.org\/publications\/policies\/copyright_policy#Background"}],"content-domain":{"domain":["dl.acm.org"],"crossmark-restriction":true},"short-container-title":["ACM Trans. Embed. Comput. Syst."],"published-print":{"date-parts":[[2013,6]]},"abstract":"<jats:p>\n            Stress is a growing problem in society and can cause musculoskeletal complaints. It would be useful to measure stress for prevention of stress-related health problems. An experiment is described in which EMG signals of the upper trapezius muscle were measured with a wireless system during three different stressful conditions: a calculation task (the Norinder test), a logical puzzle task and a memory task. The latter two tests were newly designed and aimed at creating circumstances that are similar to work stress. Amplitudes of the EMG signals were significantly higher during stress compared to rest (+2.6% of reference contraction level) and relative time with EMG gaps was lower during stress (\u221214.3% of time). Also, mean and median frequencies were significantly lower during stress than during rest (\u22128.6 and \u22128.8 Hz, respectively). EMG amplitude increased not only from rest to stress conditions, but also\n            <jats:italic>during<\/jats:italic>\n            stressful conditions and decreased\n            <jats:italic>during<\/jats:italic>\n            relaxation periods. EMG features correlated with subjectively indicated stress levels (correlations of 0.32 with RMS and \u22120.32 with relative gaptime). The results indicate that EMG is a useful parameter to detect stress. Together with other physiological sensors, EMG sensors can be included in a wireless system for ambulatory monitoring of stress levels.\n          <\/jats:p>","DOI":"10.1145\/2485984.2485987","type":"journal-article","created":{"date-parts":[[2013,7,1]],"date-time":"2013-07-01T12:27:28Z","timestamp":1372681648000},"page":"1-20","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":68,"title":["Trapezius muscle EMG as predictor of mental stress"],"prefix":"10.1145","volume":"12","author":[{"given":"Jacqueline","family":"Wijsman","sequence":"first","affiliation":[{"name":"University of Twente and Holst Centre\/imec, Eindhoven, Netherlands"}]},{"given":"Bernard","family":"Grundlehner","sequence":"additional","affiliation":[{"name":"Holst Centre\/imec, Eindhoven, Netherlands"}]},{"given":"Julien","family":"Penders","sequence":"additional","affiliation":[{"name":"Holst Centre\/imec, Eindhoven, Netherlands"}]},{"given":"Hermie","family":"Hermens","sequence":"additional","affiliation":[{"name":"University of Twente, Enschede, Netherlands"}]}],"member":"320","published-online":{"date-parts":[[2013,7,3]]},"reference":[{"key":"e_1_2_1_1_1","doi-asserted-by":"publisher","DOI":"10.1001\/jama.1994.03520110062030"},{"key":"e_1_2_1_2_1","volume-title":"Proceedings of the 3rd International Conference on Pervasive Computing Technologies for Healthcare.","author":"Brown L."},{"key":"e_1_2_1_3_1","doi-asserted-by":"publisher","DOI":"10.2307\/2136404"},{"key":"e_1_2_1_4_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00421-004-1055-z"},{"key":"e_1_2_1_5_1","doi-asserted-by":"publisher","DOI":"10.1159\/000119004"},{"key":"e_1_2_1_6_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF02734276"},{"key":"e_1_2_1_7_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF00238550"},{"key":"e_1_2_1_8_1","doi-asserted-by":"publisher","DOI":"10.5271\/sjweh.668"},{"key":"e_1_2_1_9_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF00992136"},{"key":"e_1_2_1_10_1","doi-asserted-by":"publisher","DOI":"10.1207\/s15327558ijbm0104_5"},{"key":"e_1_2_1_11_1","unstructured":"Martini F. 1998. Fundamentals of Anatomy and Physiology 4th Ed. Prentice Hall.  Martini F. 1998. Fundamentals of Anatomy and Physiology 4th Ed. Prentice Hall."},{"key":"e_1_2_1_12_1","doi-asserted-by":"publisher","DOI":"10.1002\/0471678384"},{"key":"e_1_2_1_13_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0306-4530(97)00082-6"},{"key":"e_1_2_1_14_1","doi-asserted-by":"publisher","DOI":"10.1007\/s004210000281"},{"key":"e_1_2_1_15_1","volume-title":"Proceedings of the European Study Group on Cardiovascular Oscillations. 120--122","author":"Romero I."},{"key":"e_1_2_1_16_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1469-8986.2008.00645.x"},{"key":"e_1_2_1_17_1","unstructured":"Seniam. 1999. Recommendations for sensor locations in shoulder or neck muscles. http:\/\/www.seniam.org\/.  Seniam. 1999. Recommendations for sensor locations in shoulder or neck muscles. http:\/\/www.seniam.org\/."},{"key":"e_1_2_1_18_1","first-page":"6","article-title":"Removing the influence of the heart from surface-recorded EMG","volume":"31","author":"Spalding T. W.","year":"2003","journal-title":"Biofeedback"},{"key":"e_1_2_1_19_1","doi-asserted-by":"publisher","DOI":"10.1037\/h0054651"},{"key":"e_1_2_1_20_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-3999(02)00429-4"},{"key":"e_1_2_1_21_1","doi-asserted-by":"publisher","DOI":"10.1109\/JSSC.2007.894804"},{"key":"e_1_2_1_22_1","volume-title":"Proceedings of the 28th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBS'06)","author":"Zhai J."}],"container-title":["ACM Transactions on Embedded Computing Systems"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/dl.acm.org\/doi\/10.1145\/2485984.2485987","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/dl.acm.org\/doi\/pdf\/10.1145\/2485984.2485987","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,6,18]],"date-time":"2025-06-18T08:48:44Z","timestamp":1750236524000},"score":1,"resource":{"primary":{"URL":"https:\/\/dl.acm.org\/doi\/10.1145\/2485984.2485987"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2013,6]]},"references-count":22,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2013,6]]}},"alternative-id":["10.1145\/2485984.2485987"],"URL":"https:\/\/doi.org\/10.1145\/2485984.2485987","relation":{},"ISSN":["1539-9087","1558-3465"],"issn-type":[{"value":"1539-9087","type":"print"},{"value":"1558-3465","type":"electronic"}],"subject":[],"published":{"date-parts":[[2013,6]]},"assertion":[{"value":"2010-11-01","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2011-12-01","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2013-07-03","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}