{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,19]],"date-time":"2026-02-19T03:38:49Z","timestamp":1771472329333,"version":"3.50.1"},"reference-count":14,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2004,10,13]],"date-time":"2004-10-13T00:00:00Z","timestamp":1097625600000},"content-version":"vor","delay-in-days":4914,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Muscle and Nerve"],"published-print":{"date-parts":[[1991,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The purpose of this study was to determine whether quantitative motor unit analysis in postpolio individuals correlates with muscle strength, endurance, work capacity, or power spectral characteristics of surface EMG and to determine whether power spectrum differentiates postpolio from control subjects. This study was designed to compare these variables in 34 symptomatic postpolio, 16 asymptomatic postpolio, and 41 control subjects. Quantitative motor unit analysis of the quadriceps femoris muscle was performed using a concentric needle electrode. Isometric knee extension peak torque, endurance (time to exhaustion) at 40% of maximal torque, work capacity (tension time index), and recovery of force through 10 minutes postexhaustion were determined. Median frequency of the surface power spectrum was determined during the above testing. Power spectrum histograms were compared at the onset and termination of endurance exercise. Motor unit action potential variables did not correlate with isometric peak torque, tension time index, endurance time, recovery of strength, or with median frequency. Surface power spectrum did not differentiate postpolio from control subjects.<\/jats:p>","DOI":"10.1002\/mus.880140508","type":"journal-article","created":{"date-parts":[[2005,1,1]],"date-time":"2005-01-01T09:53:13Z","timestamp":1104573193000},"page":"429-434","source":"Crossref","is-referenced-by-count":16,"title":["Correlation of motor units with strength and spectral characteristics in polio survivors and controls"],"prefix":"10.1002","volume":"14","author":[{"given":"Arthur A.","family":"Rodriquez","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"James C.","family":"Agre","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2004,10,13]]},"reference":[{"key":"e_1_2_1_2_2","first-page":"367","article-title":"Symptoms and clinical impressions of patients seen in a post\u2010polio clinic","volume":"70","author":"Agre JC","year":"1989","journal-title":"Arch Phys Med Rehabil"},{"key":"e_1_2_1_3_2","unstructured":"AgreJC RodriquezAA: Muscle strength work capacity endurance and recovery from fatiguing exercise: a comparison of symptomatic polios to asymptomatic polios and controls.Arch Phys Med Rehabil(in press)."},{"key":"e_1_2_1_4_2","first-page":"4","article-title":"Late effects of poliomyelitis","volume":"68","author":"Cosgrove JL","year":"1987","journal-title":"Arch Phys Med Rehabil"},{"key":"e_1_2_1_5_2","first-page":"251","article-title":"Myoelectrical manifestations of localized muscular fatigue in humans","volume":"11","author":"DeLuca CJ","year":"1985","journal-title":"Critical Rev in Biomed Eng"},{"key":"e_1_2_1_6_2","doi-asserted-by":"publisher","DOI":"10.1002\/mus.880130214"},{"key":"e_1_2_1_7_2","doi-asserted-by":"publisher","DOI":"10.1002\/mus.880110712"},{"key":"e_1_2_1_8_2","doi-asserted-by":"crossref","first-page":"844","DOI":"10.3928\/0147-7447-19850701-06","article-title":"New problems in old polio patients: results of a survey of 539 polio survivors","volume":"8","author":"Halstead LS","year":"1985","journal-title":"Orthopedics"},{"key":"e_1_2_1_9_2","first-page":"597","article-title":"Application of harmonic analysis to the electromyograms evaluation","volume":"17","author":"Kopec J","year":"1966","journal-title":"Acta Physiologica Polonica"},{"key":"e_1_2_1_10_2","first-page":"89","article-title":"Frequency analysis of the EMG in neuromuscular disorders","volume":"24","author":"Larsson LE","year":"1968","journal-title":"Electroenceph Clin Neurophysiol"},{"key":"e_1_2_1_11_2","first-page":"66","volume-title":"Neurology 1, Clinical Neurophysiology","author":"Lindstr\u00f6m L","year":"1981"},{"key":"e_1_2_1_12_2","volume-title":"Aids to the examination of the peripheral nervous system","author":"Medical Research Council","year":"1943"},{"key":"e_1_2_1_13_2","unstructured":"RodriquezAA AgreJC: Electrophysiologic study of the quadriceps muscles during fatiguing exercise and recovery: a comparison of symptomatic and asymptomatic polios to controls (submitted for publication)."},{"key":"e_1_2_1_14_2","unstructured":"St\u00e5lbergEV:Computer\u2010aided EMG analysis in AAEE Didactic Program. Thirty\u2010first Annual Meeting. American Association of Electromyography and Electrodiagnosis. Rochester Minnesota."},{"key":"e_1_2_1_15_2","doi-asserted-by":"publisher","DOI":"10.1002\/mus.880040610"}],"container-title":["Muscle &amp; Nerve"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fmus.880140508","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/mus.880140508","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,23]],"date-time":"2023-10-23T05:20:06Z","timestamp":1698038406000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/mus.880140508"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1991,5]]},"references-count":14,"journal-issue":{"issue":"5","published-print":{"date-parts":[[1991,5]]}},"alternative-id":["10.1002\/mus.880140508"],"URL":"https:\/\/doi.org\/10.1002\/mus.880140508","archive":["Portico"],"relation":{},"ISSN":["0148-639X","1097-4598"],"issn-type":[{"value":"0148-639X","type":"print"},{"value":"1097-4598","type":"electronic"}],"subject":[],"published":{"date-parts":[[1991,5]]}}}