Low- and High-Volume of Intensive Endurance Training Significantly Improves Maximal Oxygen Uptake after 10-Weeks of Training in Healthy Men
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{"title"=>"Low- and High-Volume of Intensive Endurance Training Significantly Improves Maximal Oxygen Uptake after 10-Weeks of Training in Healthy Men", "type"=>"journal", "authors"=>[{"first_name"=>"Arnt Erik", "last_name"=>"Tjønna", "scopus_author_id"=>"13808127100"}, {"first_name"=>"Ingeborg Megaard", "last_name"=>"Leinan", "scopus_author_id"=>"56904177600"}, {"first_name"=>"Anette Thoresen", "last_name"=>"Bartnes", "scopus_author_id"=>"55986736300"}, {"first_name"=>"Bjørn M.", "last_name"=>"Jenssen", "scopus_author_id"=>"7003897743"}, {"first_name"=>"Martin J.", "last_name"=>"Gibala", "scopus_author_id"=>"6603978588"}, {"first_name"=>"Richard A.", "last_name"=>"Winett", "scopus_author_id"=>"7005010246"}, {"first_name"=>"Ulrik", "last_name"=>"Wisløff", "scopus_author_id"=>"55931365800"}], "year"=>2013, "source"=>"PLoS ONE", "identifiers"=>{"pui"=>"369030931", "sgr"=>"84878439732", "issn"=>"19326203", "pmid"=>"23734250", "scopus"=>"2-s2.0-84878439732", "doi"=>"10.1371/journal.pone.0065382", "isbn"=>"1932-6203 (Electronic)$\\$r1932-6203 (Linking)"}, "id"=>"e5d54018-6aae-34ae-a4e5-5e0183fd415f", "abstract"=>"UNLABELLED: Regular exercise training improves maximal oxygen uptake (VO2max), but the optimal intensity and volume necessary to obtain maximal benefit remains to be defined. A growing body of evidence suggests that exercise training with low-volume but high-intensity may be a time-efficient means to achieve health benefits. In the present study, we measured changes in VO2max and traditional cardiovascular risk factors after a 10 wk. training protocol that involved three weekly high-intensity interval sessions. One group followed a protocol which consisted of 4×4 min at 90{%} of maximal heart rate (HRmax) interspersed with 3 min active recovery at 70{%} HRmax (4-AIT), the other group performed a single bout protocol that consisted of 1×4 min at 90{%} HRmax (1-AIT). Twenty-six inactive but otherwise healthy overweight men (BMI: 25-30, age: 35-45 y) were randomized to either 1-AIT (n = 11) or 4-AIT (n = 13). After training, VO2max increased by 10{%} (∼5.0 mL⋅kg(-1)⋅min(-1)) and 13{%} (∼6.5 mL⋅kg(-1)⋅min(-1)) after 1-AIT and 4-AIT, respectively (group difference, p = 0.08). Oxygen cost during running at a sub-maximal workload was reduced by 14{%} and 13{%} after 1-AIT and 4-AIT, respectively. Systolic blood pressure decreased by 7.1 and 2.6 mmHg after 1-AIT and 4-AIT respectively, while diastolic pressure decreased by 7.7 and 6.1 mmHg (group difference, p = 0.84). Both groups had a similar ∼5{%} decrease in fasting glucose. Body fat, total cholesterol, LDL-cholesterol, and ox-LDL cholesterol only were significantly reduced after 4-AIT. Our data suggest that a single bout of AIT performed three times per week may be a time-efficient strategy to improve VO2max and reduce blood pressure and fasting glucose in previously inactive but otherwise healthy middle-aged individuals. The 1-AIT type of exercise training may be readily implemented as part of activities of daily living and could easily be translated into programs designed to improve public health.$\\$n$\\$nTRIAL REGISTRATION: ClinicalTrials.govNCT00839579.", "link"=>"http://www.mendeley.com/research/low-highvolume-intensive-endurance-training-significantly-improves-maximal-oxygen-uptake-after-10wee", "reader_count"=>229, "reader_count_by_academic_status"=>{"Unspecified"=>1, "Professor > Associate Professor"=>11, "Student > Doctoral Student"=>20, "Researcher"=>16, "Student > Ph. D. Student"=>30, "Student > Postgraduate"=>14, "Student > Master"=>56, "Other"=>14, "Student > Bachelor"=>46, "Lecturer"=>8, "Lecturer > Senior Lecturer"=>3, "Professor"=>10}, "reader_count_by_user_role"=>{"Unspecified"=>1, "Professor > Associate Professor"=>11, "Student > Doctoral Student"=>20, "Researcher"=>16, "Student > Ph. D. 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Figshare

  • {"files"=>["https://ndownloader.figshare.com/files/1069782"], "description"=>"<p>Baseline data are presented as mean ± SD. Post values are mean within group change (95% CI) after exercise intervention. P-values are from mixed model analyses after adjusting for baseline values. BL; baseline. HbA1c; glycosylated hemoglobin. CRP: c - reactive protein, FMD; flow mediated dilatation (1-AIT, n = 11; 4-AIT, n = 13).</p>", "links"=>[], "tags"=>["cardiovascular", "hypertension", "Peripheral vascular diseases", "Clinical research design", "clinical trials", "Non-clinical medicine", "Health care policy", "Health education and awareness", "nutrition", "obesity", "Public health", "preventive medicine", "Sports and exercise medicine", "baseline"], "article_id"=>708480, "categories"=>["Medicine"], "users"=>["Arnt Erik Tjønna", "Ingeborg Megaard Leinan", "Anette Thoresen Bartnes", "Bjørn M. Jenssen", "Martin J. Gibala", "Richard A. Winett", "Ulrik Wisløff"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0065382.t001", "stats"=>{"downloads"=>3, "page_views"=>17, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Subjects_baseline_values_mean_SD_and_mean_within_group_change_95_CI_post_exercise_intervention_/708480", "title"=>"Subjects baseline values (mean, SD), and mean within group change (95% CI) post exercise intervention.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2013-05-29 02:21:20"}
  • {"files"=>["https://ndownloader.figshare.com/files/1069780"], "description"=>"<p>Flow chart of the study design.</p>", "links"=>[], "tags"=>["cardiovascular", "hypertension", "Peripheral vascular diseases", "Clinical research design", "clinical trials", "Non-clinical medicine", "Health care policy", "Health education and awareness", "nutrition", "obesity", "Public health", "preventive medicine", "Sports and exercise medicine"], "article_id"=>708478, "categories"=>["Medicine"], "users"=>["Arnt Erik Tjønna", "Ingeborg Megaard Leinan", "Anette Thoresen Bartnes", "Bjørn M. Jenssen", "Martin J. Gibala", "Richard A. Winett", "Ulrik Wisløff"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0065382.g001", "stats"=>{"downloads"=>1, "page_views"=>13, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Flow_chart_of_the_study_design_/708478", "title"=>"Flow chart of the study design.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-05-29 02:21:18"}
  • {"files"=>["https://ndownloader.figshare.com/files/1069783", "https://ndownloader.figshare.com/files/1069784"], "description"=>"<div><p></p><p>Regular exercise training improves maximal oxygen uptake (VO<sub>2max</sub>), but the optimal intensity and volume necessary to obtain maximal benefit remains to be defined. A growing body of evidence suggests that exercise training with low-volume but high-intensity may be a time-efficient means to achieve health benefits. In the present study, we measured changes in VO<sub>2max</sub> and traditional cardiovascular risk factors after a 10 wk. training protocol that involved three weekly high-intensity interval sessions. One group followed a protocol which consisted of 4×4 min at 90% of maximal heart rate (HR<sub>max</sub>) interspersed with 3 min active recovery at 70% HR<sub>max</sub> (4-AIT), the other group performed a single bout protocol that consisted of 1×4 min at 90% HR<sub>max</sub> (1-AIT). Twenty-six inactive but otherwise healthy overweight men (BMI: 25–30, age: 35–45 y) were randomized to either 1-AIT (n = 11) or 4-AIT (n = 13). After training, VO<sub>2max</sub> increased by 10% (∼5.0 mL⋅kg<sup>−1</sup>⋅min<sup>−1</sup>) and 13% (∼6.5 mL⋅kg<sup>−1</sup>⋅min<sup>−1</sup>) after 1-AIT and 4-AIT, respectively (group difference, p = 0.08). Oxygen cost during running at a sub-maximal workload was reduced by 14% and 13% after 1-AIT and 4-AIT, respectively. Systolic blood pressure decreased by 7.1 and 2.6 mmHg after 1-AIT and 4-AIT respectively, while diastolic pressure decreased by 7.7 and 6.1 mmHg (group difference, p = 0.84). Both groups had a similar ∼5% decrease in fasting glucose. Body fat, total cholesterol, LDL-cholesterol, and ox-LDL cholesterol only were significantly reduced after 4-AIT. Our data suggest that a single bout of AIT performed three times per week may be a time-efficient strategy to improve VO<sub>2max</sub> and reduce blood pressure and fasting glucose in previously inactive but otherwise healthy middle-aged individuals. The 1-AIT type of exercise training may be readily implemented as part of activities of daily living and could easily be translated into programs designed to improve public health.</p><p>Trial Registration</p><p><a href=\"http://ClinicalTrials.gov\" target=\"_blank\">ClinicalTrials.gov</a><a href=\"http://clinicaltrials.gov/ct2/show/NCT00839579\" target=\"_blank\">NCT00839579</a></p></div>", "links"=>[], "tags"=>["cardiovascular", "hypertension", "Peripheral vascular diseases", "Clinical research design", "clinical trials", "Non-clinical medicine", "Health care policy", "Health education and awareness", "nutrition", "obesity", "Public health", "preventive medicine", "Sports and exercise medicine", "high-volume", "intensive", "endurance", "improves", "maximal", "uptake", "10-weeks"], "article_id"=>708481, "categories"=>["Medicine"], "users"=>["Arnt Erik Tjønna", "Ingeborg Megaard Leinan", "Anette Thoresen Bartnes", "Bjørn M. Jenssen", "Martin J. Gibala", "Richard A. Winett", "Ulrik Wisløff"], "doi"=>["https://dx.doi.org/10.1371/journal.pone.0065382.s001", "https://dx.doi.org/10.1371/journal.pone.0065382.s002"], "stats"=>{"downloads"=>26, "page_views"=>23, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Low_and_High_Volume_of_Intensive_Endurance_Training_Significantly_Improves_Maximal_Oxygen_Uptake_after_10_Weeks_of_Training_in_Healthy_Men_/708481", "title"=>"Low- and High-Volume of Intensive Endurance Training Significantly Improves Maximal Oxygen Uptake after 10-Weeks of Training in Healthy Men", "pos_in_sequence"=>0, "defined_type"=>4, "published_date"=>"2013-05-29 02:21:21"}
  • {"files"=>["https://ndownloader.figshare.com/files/1069781"], "description"=>"<p>Maximal oxygen uptake (VO<sub>2max</sub>) (A). Maximal oxygen pulse (B). Work economy presented as submaximal oxygen uptake (C). Data represents mean (SD).</p>", "links"=>[], "tags"=>["cardiovascular", "hypertension", "Peripheral vascular diseases", "Clinical research design", "clinical trials", "Non-clinical medicine", "Health care policy", "Health education and awareness", "nutrition", "obesity", "Public health", "preventive medicine", "Sports and exercise medicine"], "article_id"=>708479, "categories"=>["Medicine"], "users"=>["Arnt Erik Tjønna", "Ingeborg Megaard Leinan", "Anette Thoresen Bartnes", "Bjørn M. Jenssen", "Martin J. Gibala", "Richard A. Winett", "Ulrik Wisløff"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0065382.g002", "stats"=>{"downloads"=>2, "page_views"=>10, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Figure_2_/708479", "title"=>"Figure 2", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-05-29 02:21:19"}

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Relative Metric

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