{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/22685"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/22685","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Cardiovascular responses to two minutes of isometric contractions of the finger flexors in healthy women","abstract":"The purpose of this study was to investigate the cardiovascular responses to prolonged submaximal (20% MVC) and maximal (100% MVC) isometric contraction of the finger flexors in healthy women between the ages of 20 and 35 years. The cardiovascular variables which were investigated included; heart rate (HR), systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP), pulse pressure (PP), stroke volume (SV) and cardiac output (CO).","abstract_html":"The purpose of this study was to investigate the cardiovascular responses to prolonged submaximal (20% MVC) and maximal (100% MVC) isometric contraction of the finger flexors in healthy women between the ages of 20 and 35 years. The cardiovascular variables which were investigated included; heart rate (HR), systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP), pulse pressure (PP), stroke volume (SV) and cardiac output (CO).","abstract_has_math":false,"creators":["Smith, Denise Louise"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Kinesiology and Community Health","degree_department":null,"school":null,"contributors":["Misner, James E."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-05-07T13:48:01Z","date_published":"2011-05-07T13:48:01Z","updated_at":"2026-07-22T22:25:20Z","subjects":["Biology, Animal Physiology","Education, Physical"],"languages":["eng"],"rights":["Copyright 1990 Smith, Denise Louise"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9026322","(UMI)AAI9026322"],"render_values":[{"text":"AAI9026322","href":null,"code":true},{"text":"(UMI)AAI9026322","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/22685","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Misner, James E."]},{"key":"dc:creator","label":"Author","values":["Smith, Denise Louise"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-05-07T13:48:01Z","10000-01-01","1990"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Kinesiology and Community Health"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Biology, Animal Physiology","Education, Physical"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 1990 Smith, Denise Louise"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9026322","(UMI)AAI9026322","http://hdl.handle.net/2142/22685"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The purpose of this study was to investigate the cardiovascular responses to prolonged submaximal (20% MVC) and maximal (100% MVC) isometric contraction of the finger flexors in healthy women between the ages of 20 and 35 years. The cardiovascular variables which were investigated included; heart rate (HR), systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP), pulse pressure (PP), stroke volume (SV) and cardiac output (CO).","Doppler echocardiography was used to estimate stroke volume from the measures of aortic diameter, using 2 dimensional echocardiography, and time-velocity integrals, using Doppler ultrasound. Since aortic diameter and Doppler velocities can not be measured simultaneously, this study involved two separate experiments. Experiment I was designed to investigate changes in aortic diameter during two minutes of prolonged maximal (100% MVC) isometric contraction of the finger flexors. Based on the finding that aortic diameter did not change significantly (.05 level) during maximal isometric contractions, Experiment II was designed to investigate HR (EKG), blood pressure (auscultation), stroke volume (resting aortic diameter $\\times$ time-velocity integrals) and cardiac output (SV $\\times$ HR).","During the submaximal isometric contractions (20% MVC), HR, PP, SV and CO did not change significantly from rest during the first 30 seconds of contraction or during the two-minute contraction period. SBP, DBP and MAP increased significantly from resting levels during the two minutes of submaximal isometric contractions.","During maximal isometric contraction (100% MVC), HR, SBP, DBP, MAP and CO increased significantly during the first 30 seconds of contraction. HR and CO levelled off during the remainder of the contraction period, whereas SBP, DBP and MAP continued to rise throughout the contraction period. PP and SV remained relatively constant throughout the maximal isometric contraction, with SV increasing significantly during the first 30 seconds of recovery.","These data suggest that there is a greater magnitude of cardiovascular response to maximal isometric contractions and that there is a different pattern of response between HR and BP variables. Also, differences in cardiac output are affected more by changes in HR than in SV, as SV remains relatively constant during both submaximal (20% MVC) and maximal (100% MVC) isometric contractions of the finger flexors.","Made available in DSpace on 2011-05-07T13:48:01Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9026322.pdf: 4783648 bytes, checksum: a3667e5b3b4b95add7239490bceb4abd (MD5) Previous issue date: 1990","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:59:18Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:27:57-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","ETDs are only available to UIUC Users without author permission","U of I Only"]},{"key":"dc:title","label":"Title","values":["Cardiovascular responses to two minutes of isometric contractions of the finger flexors in healthy women"]}]}],"canonical_facts":{"dc:contributor":["Misner, James E."],"dc:creator":["Smith, Denise Louise"],"dc:date":["2011-05-07T13:48:01Z","10000-01-01","1990"],"dc:description":["The purpose of this study was to investigate the cardiovascular responses to prolonged submaximal (20% MVC) and maximal (100% MVC) isometric contraction of the finger flexors in healthy women between the ages of 20 and 35 years. The cardiovascular variables which were investigated included; heart rate (HR), systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP), pulse pressure (PP), stroke volume (SV) and cardiac output (CO).","Doppler echocardiography was used to estimate stroke volume from the measures of aortic diameter, using 2 dimensional echocardiography, and time-velocity integrals, using Doppler ultrasound. Since aortic diameter and Doppler velocities can not be measured simultaneously, this study involved two separate experiments. Experiment I was designed to investigate changes in aortic diameter during two minutes of prolonged maximal (100% MVC) isometric contraction of the finger flexors. Based on the finding that aortic diameter did not change significantly (.05 level) during maximal isometric contractions, Experiment II was designed to investigate HR (EKG), blood pressure (auscultation), stroke volume (resting aortic diameter $\\times$ time-velocity integrals) and cardiac output (SV $\\times$ HR).","During the submaximal isometric contractions (20% MVC), HR, PP, SV and CO did not change significantly from rest during the first 30 seconds of contraction or during the two-minute contraction period. SBP, DBP and MAP increased significantly from resting levels during the two minutes of submaximal isometric contractions.","During maximal isometric contraction (100% MVC), HR, SBP, DBP, MAP and CO increased significantly during the first 30 seconds of contraction. HR and CO levelled off during the remainder of the contraction period, whereas SBP, DBP and MAP continued to rise throughout the contraction period. PP and SV remained relatively constant throughout the maximal isometric contraction, with SV increasing significantly during the first 30 seconds of recovery.","These data suggest that there is a greater magnitude of cardiovascular response to maximal isometric contractions and that there is a different pattern of response between HR and BP variables. Also, differences in cardiac output are affected more by changes in HR than in SV, as SV remains relatively constant during both submaximal (20% MVC) and maximal (100% MVC) isometric contractions of the finger flexors.","Made available in DSpace on 2011-05-07T13:48:01Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9026322.pdf: 4783648 bytes, checksum: a3667e5b3b4b95add7239490bceb4abd (MD5) Previous issue date: 1990","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:59:18Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:27:57-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","ETDs are only available to UIUC Users without author permission","U of I Only"],"dc:identifier":["AAI9026322","(UMI)AAI9026322","http://hdl.handle.net/2142/22685"],"dc:language":["eng"],"dc:rights":["Copyright 1990 Smith, Denise Louise"],"dc:subject":["Biology, Animal Physiology","Education, Physical"],"dc:title":["Cardiovascular responses to two minutes of isometric contractions of the finger flexors in healthy women"],"dc:type":["text"],"thesis:degree_discipline":["Kinesiology and Community Health"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:20Z"}