Fibre-specific responses to endurance and low volume high intensity interval training: striking similarities in acute and chronic adaptation
The current study involved the completion of two distinct experiments. Experiment 1 compared fibre specific and whole muscle responses to acute bouts of either low-volume high-intensity interval training (LV-HIT) or moderate-intensity continuous endurance exercise (END) in a randomized crossover des...
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| description | The current study involved the completion of two distinct experiments. Experiment 1 compared fibre specific and whole muscle responses to acute bouts of either low-volume high-intensity interval training (LV-HIT) or moderate-intensity continuous endurance exercise (END) in a randomized crossover design. Experiment 2 examined the impact of a six-week training intervention (END or LV-HIT; 4 days/week), on whole body and skeletal muscle fibre specific markers of aerobic and anaerobic capacity. Six recreationally active men (Age: 20.7 ± 3.8 yrs; VO2peak: 51.9 ± 5.1 mL/kg/min) reported to the lab on two separate occasions for experiment 1. Following a muscle biopsy taken in a fasted state, participants completed an acute bout of each exercise protocol (LV-HIT: 8, 20-second intervals at ∼ 170% of VO2peak separated by 10 seconds of rest; END: 30 minutes at ∼ 65% of VO2peak), immediately followed by a muscle biopsy. Glycogen content of type I and IIA fibres was significantly (p |
| doi_str_mv | 10.1371/journal.pone.0098119 |
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Experiment 1 compared fibre specific and whole muscle responses to acute bouts of either low-volume high-intensity interval training (LV-HIT) or moderate-intensity continuous endurance exercise (END) in a randomized crossover design. Experiment 2 examined the impact of a six-week training intervention (END or LV-HIT; 4 days/week), on whole body and skeletal muscle fibre specific markers of aerobic and anaerobic capacity. Six recreationally active men (Age: 20.7 ± 3.8 yrs; VO2peak: 51.9 ± 5.1 mL/kg/min) reported to the lab on two separate occasions for experiment 1. Following a muscle biopsy taken in a fasted state, participants completed an acute bout of each exercise protocol (LV-HIT: 8, 20-second intervals at ∼ 170% of VO2peak separated by 10 seconds of rest; END: 30 minutes at ∼ 65% of VO2peak), immediately followed by a muscle biopsy. Glycogen content of type I and IIA fibres was significantly (p<0.05) reduced, while p-ACC was significantly increased (p<0.05) following both protocols. Nineteen recreationally active males (n = 16) and females (n = 3) were VO2peak-matched and assigned to either the LV-HIT (n = 10; 21 ± 2 yrs) or END (n = 9; 20.7 ± 3.8 yrs) group for experiment 2. After 6 weeks, both training protocols induced comparable increases in aerobic capacity (END: Pre: 48.3 ± 6.0, Mid: 51.8 ± 6.0, Post: 55.0 ± 6.3 mL/kg/min LV-HIT: Pre: 47.9 ± 8.1, Mid: 50.4 ± 7.4, Post: 54.7 ± 7.6 mL/kg/min), fibre-type specific oxidative and glycolytic capacity, glycogen and IMTG stores, and whole-muscle capillary density. Interestingly, only LV-HIT induced greater improvements in anaerobic performance and estimated whole-muscle glycolytic capacity. These results suggest that 30 minutes of END exercise at ∼ 65% VO2peak or 4 minutes of LV-HIT at ∼ 170% VO2peak induce comparable changes in the intra-myocellular environment (glycogen content and signaling activation); correspondingly, training-induced adaptations resulting for these protocols, and other HIT and END protocols are strikingly similar.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0098119</identifier><identifier>PMID: 24901767</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Adaptation ; Adaptation, Physiological ; Adolescent ; Aerobic capacity ; Aerobics ; Biology and Life Sciences ; Biopsy ; Biosynthesis ; Durability ; Endurance ; Exercise ; Exercise Test ; Experiments ; Female ; Females ; Glucose - metabolism ; Glycogen ; Glycolysis ; Humans ; Kinesiology ; Male ; Males ; Metabolism ; Metabolites ; Muscle, Skeletal - physiology ; Muscles ; Musculoskeletal system ; Oxygen Consumption ; Phosphorylation ; Physical Endurance ; Physical fitness ; Physiology ; Research and Analysis Methods ; Rodents ; Signaling ; Skeletal muscle ; Studies ; Training ; Young Adult</subject><ispartof>PloS one, 2014-06, Vol.9 (6), p.e98119-e98119</ispartof><rights>COPYRIGHT 2014 Public Library of Science</rights><rights>2014 Scribbans et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License: http://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>2014 Scribbans et al 2014 Scribbans et al</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c692t-f3a63cfb7133969a998b45303cc898cb5830f35770ad88e2b264ac41058dc84e3</citedby><cites>FETCH-LOGICAL-c692t-f3a63cfb7133969a998b45303cc898cb5830f35770ad88e2b264ac41058dc84e3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4047011/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4047011/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,723,776,780,860,881,2096,2915,23845,27901,27902,53766,53768,79342,79343</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/24901767$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Scribbans, Trisha D</creatorcontrib><creatorcontrib>Edgett, Brittany A</creatorcontrib><creatorcontrib>Vorobej, Kira</creatorcontrib><creatorcontrib>Mitchell, Andrew S</creatorcontrib><creatorcontrib>Joanisse, Sophie D</creatorcontrib><creatorcontrib>Matusiak, Jennifer B L</creatorcontrib><creatorcontrib>Parise, Gianni</creatorcontrib><creatorcontrib>Quadrilatero, Joe</creatorcontrib><creatorcontrib>Gurd, Brendon J</creatorcontrib><title>Fibre-specific responses to endurance and low volume high intensity interval training: striking similarities in acute and chronic adaptation</title><title>PloS one</title><addtitle>PLoS One</addtitle><description>The current study involved the completion of two distinct experiments. Experiment 1 compared fibre specific and whole muscle responses to acute bouts of either low-volume high-intensity interval training (LV-HIT) or moderate-intensity continuous endurance exercise (END) in a randomized crossover design. Experiment 2 examined the impact of a six-week training intervention (END or LV-HIT; 4 days/week), on whole body and skeletal muscle fibre specific markers of aerobic and anaerobic capacity. Six recreationally active men (Age: 20.7 ± 3.8 yrs; VO2peak: 51.9 ± 5.1 mL/kg/min) reported to the lab on two separate occasions for experiment 1. Following a muscle biopsy taken in a fasted state, participants completed an acute bout of each exercise protocol (LV-HIT: 8, 20-second intervals at ∼ 170% of VO2peak separated by 10 seconds of rest; END: 30 minutes at ∼ 65% of VO2peak), immediately followed by a muscle biopsy. Glycogen content of type I and IIA fibres was significantly (p<0.05) reduced, while p-ACC was significantly increased (p<0.05) following both protocols. Nineteen recreationally active males (n = 16) and females (n = 3) were VO2peak-matched and assigned to either the LV-HIT (n = 10; 21 ± 2 yrs) or END (n = 9; 20.7 ± 3.8 yrs) group for experiment 2. After 6 weeks, both training protocols induced comparable increases in aerobic capacity (END: Pre: 48.3 ± 6.0, Mid: 51.8 ± 6.0, Post: 55.0 ± 6.3 mL/kg/min LV-HIT: Pre: 47.9 ± 8.1, Mid: 50.4 ± 7.4, Post: 54.7 ± 7.6 mL/kg/min), fibre-type specific oxidative and glycolytic capacity, glycogen and IMTG stores, and whole-muscle capillary density. Interestingly, only LV-HIT induced greater improvements in anaerobic performance and estimated whole-muscle glycolytic capacity. These results suggest that 30 minutes of END exercise at ∼ 65% VO2peak or 4 minutes of LV-HIT at ∼ 170% VO2peak induce comparable changes in the intra-myocellular environment (glycogen content and signaling activation); correspondingly, training-induced adaptations resulting for these protocols, and other HIT and END protocols are strikingly similar.</description><subject>Adaptation</subject><subject>Adaptation, Physiological</subject><subject>Adolescent</subject><subject>Aerobic capacity</subject><subject>Aerobics</subject><subject>Biology and Life Sciences</subject><subject>Biopsy</subject><subject>Biosynthesis</subject><subject>Durability</subject><subject>Endurance</subject><subject>Exercise</subject><subject>Exercise Test</subject><subject>Experiments</subject><subject>Female</subject><subject>Females</subject><subject>Glucose - metabolism</subject><subject>Glycogen</subject><subject>Glycolysis</subject><subject>Humans</subject><subject>Kinesiology</subject><subject>Male</subject><subject>Males</subject><subject>Metabolism</subject><subject>Metabolites</subject><subject>Muscle, Skeletal - physiology</subject><subject>Muscles</subject><subject>Musculoskeletal system</subject><subject>Oxygen Consumption</subject><subject>Phosphorylation</subject><subject>Physical Endurance</subject><subject>Physical fitness</subject><subject>Physiology</subject><subject>Research and Analysis Methods</subject><subject>Rodents</subject><subject>Signaling</subject><subject>Skeletal muscle</subject><subject>Studies</subject><subject>Training</subject><subject>Young Adult</subject><issn>1932-6203</issn><issn>1932-6203</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>BENPR</sourceid><sourceid>DOA</sourceid><recordid>eNqNk9-L1DAQx4so3nn6H4gWBNGHXZMmbRMfhOPwdOHgwF-vYZqmbdY22UvS0_sf_KPN7vaOrdyDhJAh-cx3kslMkjzHaIlJid-t7egM9MuNNWqJEGcY8wfJMeYkWxQZIg8P7KPkifdrhHLCiuJxcpRRjnBZlMfJn3NdObXwGyV1o2XqlI-CXvk02FSZenRgpErB1Glvf6XXth8HlXa67VJtgjJeh5ud5a6hT4MDbbRp36c-OP0zWqnXg-7B6aCjpjYpyDHs9WTnrIkhoYZNgKCteZo8aqD36tm0niTfzz9-O_u8uLj8tDo7vVjIgmdh0RAoiGyqEhPCCw6cs4rmBBEpGWeyyhlBDcnLEkHNmMqqrKAgKUY5qyWjipwkL_e6m956MSXSC5yTjLMyzkis9kRtYS02Tg_gboQFLXYb1rUCXNCyVwIwy4pSyqrIK8pVDqzJSFNjQilTeV5FrQ9TtLEaVC2ViWnqZ6LzE6M70dprQREtEcZR4M0k4OzVqHwQg_ZS9T0YZcfdvSniPGdZRF_9g97_uolqIT5Am8bGuHIrKk4pZiUqWZlHankPFUetBi1j1TU67s8c3s4cIhPU79DC6L1Yff3y_-zljzn7-oDtFPSh87EQtyXj5yDdg9JZ751q7pKMkdg2zW02xLZpxNQ00e3F4QfdOd12CfkLUCkUOg</recordid><startdate>20140605</startdate><enddate>20140605</enddate><creator>Scribbans, Trisha D</creator><creator>Edgett, Brittany A</creator><creator>Vorobej, Kira</creator><creator>Mitchell, Andrew S</creator><creator>Joanisse, Sophie D</creator><creator>Matusiak, Jennifer B L</creator><creator>Parise, Gianni</creator><creator>Quadrilatero, Joe</creator><creator>Gurd, Brendon J</creator><general>Public Library of Science</general><general>Public Library of Science (PLoS)</general><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>IOV</scope><scope>ISR</scope><scope>3V.</scope><scope>7QG</scope><scope>7QL</scope><scope>7QO</scope><scope>7RV</scope><scope>7SN</scope><scope>7SS</scope><scope>7T5</scope><scope>7TG</scope><scope>7TM</scope><scope>7U9</scope><scope>7X2</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8AO</scope><scope>8C1</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>C1K</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>FR3</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>H94</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>KB.</scope><scope>KB0</scope><scope>KL.</scope><scope>L6V</scope><scope>LK8</scope><scope>M0K</scope><scope>M0S</scope><scope>M1P</scope><scope>M7N</scope><scope>M7P</scope><scope>M7S</scope><scope>NAPCQ</scope><scope>P5Z</scope><scope>P62</scope><scope>P64</scope><scope>PATMY</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>PYCSY</scope><scope>RC3</scope><scope>7X8</scope><scope>5PM</scope><scope>DOA</scope></search><sort><creationdate>20140605</creationdate><title>Fibre-specific responses to endurance and low volume high intensity interval training: striking similarities in acute and chronic adaptation</title><author>Scribbans, Trisha D ; Edgett, Brittany A ; Vorobej, Kira ; Mitchell, Andrew S ; Joanisse, Sophie D ; Matusiak, Jennifer B L ; Parise, Gianni ; Quadrilatero, Joe ; Gurd, Brendon J</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c692t-f3a63cfb7133969a998b45303cc898cb5830f35770ad88e2b264ac41058dc84e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Adaptation</topic><topic>Adaptation, Physiological</topic><topic>Adolescent</topic><topic>Aerobic capacity</topic><topic>Aerobics</topic><topic>Biology and Life Sciences</topic><topic>Biopsy</topic><topic>Biosynthesis</topic><topic>Durability</topic><topic>Endurance</topic><topic>Exercise</topic><topic>Exercise Test</topic><topic>Experiments</topic><topic>Female</topic><topic>Females</topic><topic>Glucose - 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Experiment 1 compared fibre specific and whole muscle responses to acute bouts of either low-volume high-intensity interval training (LV-HIT) or moderate-intensity continuous endurance exercise (END) in a randomized crossover design. Experiment 2 examined the impact of a six-week training intervention (END or LV-HIT; 4 days/week), on whole body and skeletal muscle fibre specific markers of aerobic and anaerobic capacity. Six recreationally active men (Age: 20.7 ± 3.8 yrs; VO2peak: 51.9 ± 5.1 mL/kg/min) reported to the lab on two separate occasions for experiment 1. Following a muscle biopsy taken in a fasted state, participants completed an acute bout of each exercise protocol (LV-HIT: 8, 20-second intervals at ∼ 170% of VO2peak separated by 10 seconds of rest; END: 30 minutes at ∼ 65% of VO2peak), immediately followed by a muscle biopsy. Glycogen content of type I and IIA fibres was significantly (p<0.05) reduced, while p-ACC was significantly increased (p<0.05) following both protocols. Nineteen recreationally active males (n = 16) and females (n = 3) were VO2peak-matched and assigned to either the LV-HIT (n = 10; 21 ± 2 yrs) or END (n = 9; 20.7 ± 3.8 yrs) group for experiment 2. After 6 weeks, both training protocols induced comparable increases in aerobic capacity (END: Pre: 48.3 ± 6.0, Mid: 51.8 ± 6.0, Post: 55.0 ± 6.3 mL/kg/min LV-HIT: Pre: 47.9 ± 8.1, Mid: 50.4 ± 7.4, Post: 54.7 ± 7.6 mL/kg/min), fibre-type specific oxidative and glycolytic capacity, glycogen and IMTG stores, and whole-muscle capillary density. Interestingly, only LV-HIT induced greater improvements in anaerobic performance and estimated whole-muscle glycolytic capacity. These results suggest that 30 minutes of END exercise at ∼ 65% VO2peak or 4 minutes of LV-HIT at ∼ 170% VO2peak induce comparable changes in the intra-myocellular environment (glycogen content and signaling activation); correspondingly, training-induced adaptations resulting for these protocols, and other HIT and END protocols are strikingly similar.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>24901767</pmid><doi>10.1371/journal.pone.0098119</doi><oa>free_for_read</oa></addata></record> |
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| source | Public Library of Science (PLoS) Journals Open Access; MEDLINE; DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; PubMed Central; Free Full-Text Journals in Chemistry |
| subjects | Adaptation Adaptation, Physiological Adolescent Aerobic capacity Aerobics Biology and Life Sciences Biopsy Biosynthesis Durability Endurance Exercise Exercise Test Experiments Female Females Glucose - metabolism Glycogen Glycolysis Humans Kinesiology Male Males Metabolism Metabolites Muscle, Skeletal - physiology Muscles Musculoskeletal system Oxygen Consumption Phosphorylation Physical Endurance Physical fitness Physiology Research and Analysis Methods Rodents Signaling Skeletal muscle Studies Training Young Adult |
| title | Fibre-specific responses to endurance and low volume high intensity interval training: striking similarities in acute and chronic adaptation |
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