High eccentric strength training reduces heart rate variability in healthy older men
Background:Evaluation of non-pharmacological therapies that improve autonomic control of the heart rate in older subjects has a clinical significance, because reduced heart rate variability (HRV) can be associated with higher cardiovascular morbidity and mortality rates.Objective:To investigate if s...
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| Veröffentlicht in: | British journal of sports medicine 2008-01, Vol.42 (1), p.59-63 |
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| creator | Melo, R C Quitério, R J Takahashi, A C M Silva, E Martins, L E B Catai, A M |
| description | Background:Evaluation of non-pharmacological therapies that improve autonomic control of the heart rate in older subjects has a clinical significance, because reduced heart rate variability (HRV) can be associated with higher cardiovascular morbidity and mortality rates.Objective:To investigate if strength training improves cardiac autonomic control in healthy older men.Methods:The HRV of nine older healthy men (mean age 62 (2.0) years) was evaluated before and after 12 weeks of isokinetic eccentric strength training (2 days/week, 2–4 sets of 8–12 repetitions at 75–80% peak torque, involving knee flexion and extension. Electrocardiogram was continuously recorded for 15 min at rest, in supine and seated positions, before and after the strength training period. To estimate strength gains, the eccentric peak torque of the dominant leg was measured at 60°/s by the same isokinetic dynamometer.Results:Mean systolic blood pressure decreased (123.78 (8.3) to 117.67 (10.2) mmHg, p |
| doi_str_mv | 10.1136/bjsm.2007.035246 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_70191595</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>4012780391</sourcerecordid><originalsourceid>FETCH-LOGICAL-b457t-da96d3eff7976b98ed54c02ff12274d09f8596e7a6e6a8ceb78e3e429024eae63</originalsourceid><addsrcrecordid>eNqFkU2L1EAQhhtR3NnVuydpFPYiGau_00cZ1BUWBVlX8NJ0kspMj0lm7e6I8-9NyKAgyJ76UE-91VUPIc8YrBkT-nW1T_2aA5g1CMWlfkBWTBpRgCzhIVmBAF0IbeQZOU9pD8C4gvIxOWNGaW6kWpGbq7DdUaxrHHIMNU054rDNO5qjD0MYtjRiM9aY6A59zDT6jPSnj8FXoQv5SMMwV7q8O9JD12CkPQ5PyKPWdwmfnt4L8uXd25vNVXH96f2HzZvropLK5KLxVjcC29ZYoytbYqNkDbxtGZ8-14BtS2U1Gq9R-7LGypQoUHILXKJHLS7I5ZJ7Fw8_RkzZ9SHV2HV-wMOYnAFmmbLqXpDDdBBj58QX_4D7wxiHaQnHrJRaW11O0Mv_QsZYYFKUbKJgoep4SCli6-5i6H08OgZutudme2625xZ7U8vzU_BY9dj8bTjpmoBiAULK-OtP3cfvThthlPt4u3H2VnH17etnNwe-Wviq398__jfMO7Gz</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1779014381</pqid></control><display><type>article</type><title>High eccentric strength training reduces heart rate variability in healthy older men</title><source>MEDLINE</source><source>BMJ Journals - NESLi2</source><creator>Melo, R C ; Quitério, R J ; Takahashi, A C M ; Silva, E ; Martins, L E B ; Catai, A M</creator><creatorcontrib>Melo, R C ; Quitério, R J ; Takahashi, A C M ; Silva, E ; Martins, L E B ; Catai, A M</creatorcontrib><description>Background:Evaluation of non-pharmacological therapies that improve autonomic control of the heart rate in older subjects has a clinical significance, because reduced heart rate variability (HRV) can be associated with higher cardiovascular morbidity and mortality rates.Objective:To investigate if strength training improves cardiac autonomic control in healthy older men.Methods:The HRV of nine older healthy men (mean age 62 (2.0) years) was evaluated before and after 12 weeks of isokinetic eccentric strength training (2 days/week, 2–4 sets of 8–12 repetitions at 75–80% peak torque, involving knee flexion and extension. Electrocardiogram was continuously recorded for 15 min at rest, in supine and seated positions, before and after the strength training period. To estimate strength gains, the eccentric peak torque of the dominant leg was measured at 60°/s by the same isokinetic dynamometer.Results:Mean systolic blood pressure decreased (123.78 (8.3) to 117.67 (10.2) mmHg, p<0.05) and peak torque increased (extension 210.02 (38.5) to 252.71 (60.9) N.m; flexion: 117.56 (25.1) to 132.96 (27.3) N.m, p<0.05) after the strength training. The frequency domain indices showed a significant training effect (p<0.05), since low frequency in normalised units and low frequency/high frequency ratio increased (supine, 57 (14) to 68 (14), 1.56 (0.85) to 2.35 (1.48); seated, 65 (15) to 74 (8.0), 2.48 (1.09) to 3.19 (1.31), respectively), and high frequency in normalised units decreased (supine, 43 (14) to 32 (14); seated, 35 (15) to 26 (8)) after the training period.Conclusion:The results of the present investigation suggest that high eccentric strength training performed by healthy older men increases peak torque and reduces systolic blood pressure. However, an autonomic imbalance towards sympathetic modulation predominance was induced by an unknown mechanism.</description><identifier>ISSN: 0306-3674</identifier><identifier>EISSN: 1473-0480</identifier><identifier>DOI: 10.1136/bjsm.2007.035246</identifier><identifier>PMID: 17562745</identifier><language>eng</language><publisher>England: BMJ Publishing Group Ltd and British Association of Sport and Exercise Medicine</publisher><subject>Age Factors ; Aged ; Aging ; Analysis of Variance ; Autonomic Nervous System - physiology ; Blood pressure ; Exercise ; Exercise - physiology ; Exercise Test - methods ; Fourier transforms ; Heart rate ; Heart Rate - physiology ; Humans ; Isometric Contraction - physiology ; Male ; Men ; Mens health ; Middle Aged ; Monitoring systems ; Mortality ; Muscle Strength - physiology ; Older people ; Oxygen Consumption - physiology ; Physical fitness ; Sports training ; Studies ; Torque</subject><ispartof>British journal of sports medicine, 2008-01, Vol.42 (1), p.59-63</ispartof><rights>2008 BMJ Publishing Group and British Association of Sport and Exercise Medicine</rights><rights>Copyright: 2008 2008 BMJ Publishing Group and British Association of Sport and Exercise Medicine</rights><rights>Copyright BMJ Publishing Group Jan 2008</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-b457t-da96d3eff7976b98ed54c02ff12274d09f8596e7a6e6a8ceb78e3e429024eae63</citedby><cites>FETCH-LOGICAL-b457t-da96d3eff7976b98ed54c02ff12274d09f8596e7a6e6a8ceb78e3e429024eae63</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttp://bjsm.bmj.com/content/42/1/59.full.pdf$$EPDF$$P50$$Gbmj$$H</linktopdf><linktohtml>$$Uhttp://bjsm.bmj.com/content/42/1/59.full$$EHTML$$P50$$Gbmj$$H</linktohtml><link.rule.ids>114,115,314,780,784,3196,23571,27924,27925,77600,77631</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/17562745$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Melo, R C</creatorcontrib><creatorcontrib>Quitério, R J</creatorcontrib><creatorcontrib>Takahashi, A C M</creatorcontrib><creatorcontrib>Silva, E</creatorcontrib><creatorcontrib>Martins, L E B</creatorcontrib><creatorcontrib>Catai, A M</creatorcontrib><title>High eccentric strength training reduces heart rate variability in healthy older men</title><title>British journal of sports medicine</title><addtitle>Br J Sports Med</addtitle><description>Background:Evaluation of non-pharmacological therapies that improve autonomic control of the heart rate in older subjects has a clinical significance, because reduced heart rate variability (HRV) can be associated with higher cardiovascular morbidity and mortality rates.Objective:To investigate if strength training improves cardiac autonomic control in healthy older men.Methods:The HRV of nine older healthy men (mean age 62 (2.0) years) was evaluated before and after 12 weeks of isokinetic eccentric strength training (2 days/week, 2–4 sets of 8–12 repetitions at 75–80% peak torque, involving knee flexion and extension. Electrocardiogram was continuously recorded for 15 min at rest, in supine and seated positions, before and after the strength training period. To estimate strength gains, the eccentric peak torque of the dominant leg was measured at 60°/s by the same isokinetic dynamometer.Results:Mean systolic blood pressure decreased (123.78 (8.3) to 117.67 (10.2) mmHg, p<0.05) and peak torque increased (extension 210.02 (38.5) to 252.71 (60.9) N.m; flexion: 117.56 (25.1) to 132.96 (27.3) N.m, p<0.05) after the strength training. The frequency domain indices showed a significant training effect (p<0.05), since low frequency in normalised units and low frequency/high frequency ratio increased (supine, 57 (14) to 68 (14), 1.56 (0.85) to 2.35 (1.48); seated, 65 (15) to 74 (8.0), 2.48 (1.09) to 3.19 (1.31), respectively), and high frequency in normalised units decreased (supine, 43 (14) to 32 (14); seated, 35 (15) to 26 (8)) after the training period.Conclusion:The results of the present investigation suggest that high eccentric strength training performed by healthy older men increases peak torque and reduces systolic blood pressure. However, an autonomic imbalance towards sympathetic modulation predominance was induced by an unknown mechanism.</description><subject>Age Factors</subject><subject>Aged</subject><subject>Aging</subject><subject>Analysis of Variance</subject><subject>Autonomic Nervous System - physiology</subject><subject>Blood pressure</subject><subject>Exercise</subject><subject>Exercise - physiology</subject><subject>Exercise Test - methods</subject><subject>Fourier transforms</subject><subject>Heart rate</subject><subject>Heart Rate - physiology</subject><subject>Humans</subject><subject>Isometric Contraction - physiology</subject><subject>Male</subject><subject>Men</subject><subject>Mens health</subject><subject>Middle Aged</subject><subject>Monitoring systems</subject><subject>Mortality</subject><subject>Muscle Strength - physiology</subject><subject>Older people</subject><subject>Oxygen Consumption - physiology</subject><subject>Physical fitness</subject><subject>Sports training</subject><subject>Studies</subject><subject>Torque</subject><issn>0306-3674</issn><issn>1473-0480</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>8G5</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNqFkU2L1EAQhhtR3NnVuydpFPYiGau_00cZ1BUWBVlX8NJ0kspMj0lm7e6I8-9NyKAgyJ76UE-91VUPIc8YrBkT-nW1T_2aA5g1CMWlfkBWTBpRgCzhIVmBAF0IbeQZOU9pD8C4gvIxOWNGaW6kWpGbq7DdUaxrHHIMNU054rDNO5qjD0MYtjRiM9aY6A59zDT6jPSnj8FXoQv5SMMwV7q8O9JD12CkPQ5PyKPWdwmfnt4L8uXd25vNVXH96f2HzZvropLK5KLxVjcC29ZYoytbYqNkDbxtGZ8-14BtS2U1Gq9R-7LGypQoUHILXKJHLS7I5ZJ7Fw8_RkzZ9SHV2HV-wMOYnAFmmbLqXpDDdBBj58QX_4D7wxiHaQnHrJRaW11O0Mv_QsZYYFKUbKJgoep4SCli6-5i6H08OgZutudme2625xZ7U8vzU_BY9dj8bTjpmoBiAULK-OtP3cfvThthlPt4u3H2VnH17etnNwe-Wviq398__jfMO7Gz</recordid><startdate>200801</startdate><enddate>200801</enddate><creator>Melo, R C</creator><creator>Quitério, R J</creator><creator>Takahashi, A C M</creator><creator>Silva, E</creator><creator>Martins, L E B</creator><creator>Catai, A M</creator><general>BMJ Publishing Group Ltd and British Association of Sport and Exercise Medicine</general><general>BMJ Publishing Group LTD</general><general>BMJ Publishing Group</general><scope>BSCLL</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7RV</scope><scope>7TS</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>88I</scope><scope>8AF</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>8G5</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BTHHO</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>KB0</scope><scope>M0S</scope><scope>M1P</scope><scope>M2O</scope><scope>M2P</scope><scope>MBDVC</scope><scope>NAPCQ</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>Q9U</scope><scope>7X8</scope></search><sort><creationdate>200801</creationdate><title>High eccentric strength training reduces heart rate variability in healthy older men</title><author>Melo, R C ; Quitério, R J ; Takahashi, A C M ; Silva, E ; Martins, L E B ; Catai, A M</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-b457t-da96d3eff7976b98ed54c02ff12274d09f8596e7a6e6a8ceb78e3e429024eae63</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Age Factors</topic><topic>Aged</topic><topic>Aging</topic><topic>Analysis of Variance</topic><topic>Autonomic Nervous System - physiology</topic><topic>Blood pressure</topic><topic>Exercise</topic><topic>Exercise - physiology</topic><topic>Exercise Test - methods</topic><topic>Fourier transforms</topic><topic>Heart rate</topic><topic>Heart Rate - physiology</topic><topic>Humans</topic><topic>Isometric Contraction - physiology</topic><topic>Male</topic><topic>Men</topic><topic>Mens health</topic><topic>Middle Aged</topic><topic>Monitoring systems</topic><topic>Mortality</topic><topic>Muscle Strength - physiology</topic><topic>Older people</topic><topic>Oxygen Consumption - physiology</topic><topic>Physical fitness</topic><topic>Sports training</topic><topic>Studies</topic><topic>Torque</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Melo, R C</creatorcontrib><creatorcontrib>Quitério, R J</creatorcontrib><creatorcontrib>Takahashi, A C M</creatorcontrib><creatorcontrib>Silva, E</creatorcontrib><creatorcontrib>Martins, L E B</creatorcontrib><creatorcontrib>Catai, A M</creatorcontrib><collection>Istex</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Nursing & Allied Health Database</collection><collection>Physical Education Index</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Medical Database (Alumni Edition)</collection><collection>Science Database (Alumni Edition)</collection><collection>STEM Database</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Research Library (Alumni Edition)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>BMJ Journals</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>Research Library Prep</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Nursing & Allied Health Database (Alumni Edition)</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Research Library</collection><collection>Science Database</collection><collection>Research Library (Corporate)</collection><collection>Nursing & Allied Health Premium</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>ProQuest Central Basic</collection><collection>MEDLINE - Academic</collection><jtitle>British journal of sports medicine</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Melo, R C</au><au>Quitério, R J</au><au>Takahashi, A C M</au><au>Silva, E</au><au>Martins, L E B</au><au>Catai, A M</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>High eccentric strength training reduces heart rate variability in healthy older men</atitle><jtitle>British journal of sports medicine</jtitle><addtitle>Br J Sports Med</addtitle><date>2008-01</date><risdate>2008</risdate><volume>42</volume><issue>1</issue><spage>59</spage><epage>63</epage><pages>59-63</pages><issn>0306-3674</issn><eissn>1473-0480</eissn><abstract>Background:Evaluation of non-pharmacological therapies that improve autonomic control of the heart rate in older subjects has a clinical significance, because reduced heart rate variability (HRV) can be associated with higher cardiovascular morbidity and mortality rates.Objective:To investigate if strength training improves cardiac autonomic control in healthy older men.Methods:The HRV of nine older healthy men (mean age 62 (2.0) years) was evaluated before and after 12 weeks of isokinetic eccentric strength training (2 days/week, 2–4 sets of 8–12 repetitions at 75–80% peak torque, involving knee flexion and extension. Electrocardiogram was continuously recorded for 15 min at rest, in supine and seated positions, before and after the strength training period. To estimate strength gains, the eccentric peak torque of the dominant leg was measured at 60°/s by the same isokinetic dynamometer.Results:Mean systolic blood pressure decreased (123.78 (8.3) to 117.67 (10.2) mmHg, p<0.05) and peak torque increased (extension 210.02 (38.5) to 252.71 (60.9) N.m; flexion: 117.56 (25.1) to 132.96 (27.3) N.m, p<0.05) after the strength training. The frequency domain indices showed a significant training effect (p<0.05), since low frequency in normalised units and low frequency/high frequency ratio increased (supine, 57 (14) to 68 (14), 1.56 (0.85) to 2.35 (1.48); seated, 65 (15) to 74 (8.0), 2.48 (1.09) to 3.19 (1.31), respectively), and high frequency in normalised units decreased (supine, 43 (14) to 32 (14); seated, 35 (15) to 26 (8)) after the training period.Conclusion:The results of the present investigation suggest that high eccentric strength training performed by healthy older men increases peak torque and reduces systolic blood pressure. However, an autonomic imbalance towards sympathetic modulation predominance was induced by an unknown mechanism.</abstract><cop>England</cop><pub>BMJ Publishing Group Ltd and British Association of Sport and Exercise Medicine</pub><pmid>17562745</pmid><doi>10.1136/bjsm.2007.035246</doi><tpages>5</tpages></addata></record> |
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| subjects | Age Factors Aged Aging Analysis of Variance Autonomic Nervous System - physiology Blood pressure Exercise Exercise - physiology Exercise Test - methods Fourier transforms Heart rate Heart Rate - physiology Humans Isometric Contraction - physiology Male Men Mens health Middle Aged Monitoring systems Mortality Muscle Strength - physiology Older people Oxygen Consumption - physiology Physical fitness Sports training Studies Torque |
| title | High eccentric strength training reduces heart rate variability in healthy older men |
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