A new objective method for determining exercise gas exchange thresholds by respiratory frequency in middle-aged men
Purpose To evaluate the agreement between the two Gas Exchange Thresholds (GETs = GET1 and GET2), identified by the conventional V-Slope method, and two Respiratory Frequency Thresholds (f R Ts = f R T1 and f R T2) obtained from a novel, low-cost, and simple method of breakpoint determination. Metho...
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| Veröffentlicht in: | European journal of applied physiology 2024-11, Vol.124 (11), p.3227-3240 |
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| container_title | European journal of applied physiology |
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| creator | Eclache, Jean P. Garcia-Tabar, Ibai Gorostiaga, Esteban M. |
| description | Purpose
To evaluate the agreement between the two Gas Exchange Thresholds (GETs = GET1 and GET2), identified by the conventional V-Slope method, and two Respiratory Frequency Thresholds (f
R
Ts = f
R
T1 and f
R
T2) obtained from a novel, low-cost, and simple method of breakpoint determination.
Methods
Fifty middle-aged males (age: 50–58 years;
V
˙
o
2peak
: 37.5 ± 8.6 mL·Kg
−1
·min
−1
), either healthy or with chronic illnesses, underwent an incremental cycle exercise test to determine maximal oxygen uptake (
V
˙
o
2max
/
V
˙
o
2peak
), GETs and f
R
Ts.
Results
There were no statistical differences [
P
> 0.05; ES: 0.17 to 0.32,
small
] between absolute and relative (56–60%
V
˙
o
2peak
) oxygen uptake (
V
˙
o
2
) values at GET1 with those obtained at f
R
T1, nor between
V
˙
o
2
values at GET2 with those at f
R
T2 (76–78%
V
˙
o
2peak
). Heart rate (HR) at f
R
T1, and
V
˙
o
2
and HR at f
R
T2 showed
very large
correlations (
r
= 0.75–0.82;
P
|
| doi_str_mv | 10.1007/s00421-024-05520-4 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_pubme</sourceid><recordid>TN_cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_11519234</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>3065983234</sourcerecordid><originalsourceid>FETCH-LOGICAL-c426t-bcee743f33238af2b6c33647812b12ea2faf87191bb0bdb1a698d430305abf373</originalsourceid><addsrcrecordid>eNp9kUtv1TAQRi0EoqXwB1ggS2zYBPxK4qxQVfGSKrGBteXHOPFVYl_s3Jb773FJuTwWrDzWfD6e0UHoOSWvKSH9m0KIYLQhTDSkbRlpxAN0TgUfmo6z_uGppsMZelLKjhAiGZWP0RmXUgydHM5RucQRbnEyO7BruAG8wDolh33K2MEKeQkxxBHDd8g2FMCjLvViJx1HwOuUoUxpdgWbI671PmS9pnzEPsO3A0R7xCHiJTg3Q6NHcJUfn6JHXs8Fnt2fF-jr-3dfrj42158_fLq6vG6sYN3aGAvQC-45Z1xqz0xnOe9ELykzlIFmXnvZ04EaQ4wzVHeDdIITTlptPO_5BXq7cfcHs4CzENesZ7XPYdH5qJIO6u9ODJMa042itKUD46ISXt0TcqrrlFUtoViYZx0hHYripGsHybfoy3-iu3TIse6nOGVUdHW6tqbYlrI5lZLBn6ahRN1JVZtUVaWqn1LVHfrFn3ucnvyyWAN8C5Taql7y77__g_0BnKqvOQ</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>3121466985</pqid></control><display><type>article</type><title>A new objective method for determining exercise gas exchange thresholds by respiratory frequency in middle-aged men</title><source>MEDLINE</source><source>Springer Journals</source><creator>Eclache, Jean P. ; Garcia-Tabar, Ibai ; Gorostiaga, Esteban M.</creator><creatorcontrib>Eclache, Jean P. ; Garcia-Tabar, Ibai ; Gorostiaga, Esteban M.</creatorcontrib><description>Purpose
To evaluate the agreement between the two Gas Exchange Thresholds (GETs = GET1 and GET2), identified by the conventional V-Slope method, and two Respiratory Frequency Thresholds (f
R
Ts = f
R
T1 and f
R
T2) obtained from a novel, low-cost, and simple method of breakpoint determination.
Methods
Fifty middle-aged males (age: 50–58 years;
V
˙
o
2peak
: 37.5 ± 8.6 mL·Kg
−1
·min
−1
), either healthy or with chronic illnesses, underwent an incremental cycle exercise test to determine maximal oxygen uptake (
V
˙
o
2max
/
V
˙
o
2peak
), GETs and f
R
Ts.
Results
There were no statistical differences [
P
> 0.05; ES: 0.17 to 0.32,
small
] between absolute and relative (56–60%
V
˙
o
2peak
) oxygen uptake (
V
˙
o
2
) values at GET1 with those obtained at f
R
T1, nor between
V
˙
o
2
values at GET2 with those at f
R
T2 (76–78%
V
˙
o
2peak
). Heart rate (HR) at f
R
T1, and
V
˙
o
2
and HR at f
R
T2 showed
very large
correlations (
r
= 0.75–0.82;
P
< 0.001) and
acceptable
precision (SEE < 7–9%) in determination of their corresponding values at GET1 and GET2. The precision in the estimation of
V
˙
o
2
at GET1 from f
R
T1 was
moderate
(SEE = 15%), while those of power output at GET1 (SEE = 23%) and GET2 (SEE = 12%) from their corresponding f
R
Ts values were
very poor
to
moderate
.
Conclusion
HR at f
R
T1 and
V
˙
o
2
and HR at f
R
T2, determined using a new objective and portable approach, may potentially serve as viable predictors of their respective GETs. This method may offer a simplified, cost-effective, and field-based approach for determining exercise threshold intensities during graded exercise.</description><identifier>ISSN: 1439-6319</identifier><identifier>ISSN: 1439-6327</identifier><identifier>EISSN: 1439-6327</identifier><identifier>DOI: 10.1007/s00421-024-05520-4</identifier><identifier>PMID: 38849689</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Biomedical and Life Sciences ; Biomedicine ; Exercise - physiology ; Exercise Test - methods ; Gas exchange ; Heart rate ; Heart Rate - physiology ; Human Physiology ; Humans ; Male ; Middle age ; Middle Aged ; Occupational Medicine/Industrial Medicine ; Original ; Original Article ; Oxygen Consumption - physiology ; Pulmonary Gas Exchange - physiology ; Respiratory Rate - physiology ; Sports Medicine</subject><ispartof>European journal of applied physiology, 2024-11, Vol.124 (11), p.3227-3240</ispartof><rights>The Author(s) 2024</rights><rights>2024. The Author(s).</rights><rights>The Author(s) 2024. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>The Author(s) 2024 2024</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c426t-bcee743f33238af2b6c33647812b12ea2faf87191bb0bdb1a698d430305abf373</cites><orcidid>0000-0002-8553-8154</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s00421-024-05520-4$$EPDF$$P50$$Gspringer$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s00421-024-05520-4$$EHTML$$P50$$Gspringer$$Hfree_for_read</linktohtml><link.rule.ids>230,314,776,780,881,27901,27902,41464,42533,51294</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/38849689$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Eclache, Jean P.</creatorcontrib><creatorcontrib>Garcia-Tabar, Ibai</creatorcontrib><creatorcontrib>Gorostiaga, Esteban M.</creatorcontrib><title>A new objective method for determining exercise gas exchange thresholds by respiratory frequency in middle-aged men</title><title>European journal of applied physiology</title><addtitle>Eur J Appl Physiol</addtitle><addtitle>Eur J Appl Physiol</addtitle><description>Purpose
To evaluate the agreement between the two Gas Exchange Thresholds (GETs = GET1 and GET2), identified by the conventional V-Slope method, and two Respiratory Frequency Thresholds (f
R
Ts = f
R
T1 and f
R
T2) obtained from a novel, low-cost, and simple method of breakpoint determination.
Methods
Fifty middle-aged males (age: 50–58 years;
V
˙
o
2peak
: 37.5 ± 8.6 mL·Kg
−1
·min
−1
), either healthy or with chronic illnesses, underwent an incremental cycle exercise test to determine maximal oxygen uptake (
V
˙
o
2max
/
V
˙
o
2peak
), GETs and f
R
Ts.
Results
There were no statistical differences [
P
> 0.05; ES: 0.17 to 0.32,
small
] between absolute and relative (56–60%
V
˙
o
2peak
) oxygen uptake (
V
˙
o
2
) values at GET1 with those obtained at f
R
T1, nor between
V
˙
o
2
values at GET2 with those at f
R
T2 (76–78%
V
˙
o
2peak
). Heart rate (HR) at f
R
T1, and
V
˙
o
2
and HR at f
R
T2 showed
very large
correlations (
r
= 0.75–0.82;
P
< 0.001) and
acceptable
precision (SEE < 7–9%) in determination of their corresponding values at GET1 and GET2. The precision in the estimation of
V
˙
o
2
at GET1 from f
R
T1 was
moderate
(SEE = 15%), while those of power output at GET1 (SEE = 23%) and GET2 (SEE = 12%) from their corresponding f
R
Ts values were
very poor
to
moderate
.
Conclusion
HR at f
R
T1 and
V
˙
o
2
and HR at f
R
T2, determined using a new objective and portable approach, may potentially serve as viable predictors of their respective GETs. This method may offer a simplified, cost-effective, and field-based approach for determining exercise threshold intensities during graded exercise.</description><subject>Biomedical and Life Sciences</subject><subject>Biomedicine</subject><subject>Exercise - physiology</subject><subject>Exercise Test - methods</subject><subject>Gas exchange</subject><subject>Heart rate</subject><subject>Heart Rate - physiology</subject><subject>Human Physiology</subject><subject>Humans</subject><subject>Male</subject><subject>Middle age</subject><subject>Middle Aged</subject><subject>Occupational Medicine/Industrial Medicine</subject><subject>Original</subject><subject>Original Article</subject><subject>Oxygen Consumption - physiology</subject><subject>Pulmonary Gas Exchange - physiology</subject><subject>Respiratory Rate - physiology</subject><subject>Sports Medicine</subject><issn>1439-6319</issn><issn>1439-6327</issn><issn>1439-6327</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><sourceid>C6C</sourceid><sourceid>EIF</sourceid><recordid>eNp9kUtv1TAQRi0EoqXwB1ggS2zYBPxK4qxQVfGSKrGBteXHOPFVYl_s3Jb773FJuTwWrDzWfD6e0UHoOSWvKSH9m0KIYLQhTDSkbRlpxAN0TgUfmo6z_uGppsMZelLKjhAiGZWP0RmXUgydHM5RucQRbnEyO7BruAG8wDolh33K2MEKeQkxxBHDd8g2FMCjLvViJx1HwOuUoUxpdgWbI671PmS9pnzEPsO3A0R7xCHiJTg3Q6NHcJUfn6JHXs8Fnt2fF-jr-3dfrj42158_fLq6vG6sYN3aGAvQC-45Z1xqz0xnOe9ELykzlIFmXnvZ04EaQ4wzVHeDdIITTlptPO_5BXq7cfcHs4CzENesZ7XPYdH5qJIO6u9ODJMa042itKUD46ISXt0TcqrrlFUtoViYZx0hHYripGsHybfoy3-iu3TIse6nOGVUdHW6tqbYlrI5lZLBn6ahRN1JVZtUVaWqn1LVHfrFn3ucnvyyWAN8C5Taql7y77__g_0BnKqvOQ</recordid><startdate>20241101</startdate><enddate>20241101</enddate><creator>Eclache, Jean P.</creator><creator>Garcia-Tabar, Ibai</creator><creator>Gorostiaga, Esteban M.</creator><general>Springer Berlin Heidelberg</general><general>Springer Nature B.V</general><scope>C6C</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>K9.</scope><scope>NAPCQ</scope><scope>7X8</scope><scope>5PM</scope><orcidid>https://orcid.org/0000-0002-8553-8154</orcidid></search><sort><creationdate>20241101</creationdate><title>A new objective method for determining exercise gas exchange thresholds by respiratory frequency in middle-aged men</title><author>Eclache, Jean P. ; Garcia-Tabar, Ibai ; Gorostiaga, Esteban M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c426t-bcee743f33238af2b6c33647812b12ea2faf87191bb0bdb1a698d430305abf373</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Biomedical and Life Sciences</topic><topic>Biomedicine</topic><topic>Exercise - physiology</topic><topic>Exercise Test - methods</topic><topic>Gas exchange</topic><topic>Heart rate</topic><topic>Heart Rate - physiology</topic><topic>Human Physiology</topic><topic>Humans</topic><topic>Male</topic><topic>Middle age</topic><topic>Middle Aged</topic><topic>Occupational Medicine/Industrial Medicine</topic><topic>Original</topic><topic>Original Article</topic><topic>Oxygen Consumption - physiology</topic><topic>Pulmonary Gas Exchange - physiology</topic><topic>Respiratory Rate - physiology</topic><topic>Sports Medicine</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Eclache, Jean P.</creatorcontrib><creatorcontrib>Garcia-Tabar, Ibai</creatorcontrib><creatorcontrib>Gorostiaga, Esteban M.</creatorcontrib><collection>Springer Nature OA Free Journals</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 Health & Medical Complete (Alumni)</collection><collection>Nursing & Allied Health Premium</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>European journal of applied physiology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Eclache, Jean P.</au><au>Garcia-Tabar, Ibai</au><au>Gorostiaga, Esteban M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A new objective method for determining exercise gas exchange thresholds by respiratory frequency in middle-aged men</atitle><jtitle>European journal of applied physiology</jtitle><stitle>Eur J Appl Physiol</stitle><addtitle>Eur J Appl Physiol</addtitle><date>2024-11-01</date><risdate>2024</risdate><volume>124</volume><issue>11</issue><spage>3227</spage><epage>3240</epage><pages>3227-3240</pages><issn>1439-6319</issn><issn>1439-6327</issn><eissn>1439-6327</eissn><abstract>Purpose
To evaluate the agreement between the two Gas Exchange Thresholds (GETs = GET1 and GET2), identified by the conventional V-Slope method, and two Respiratory Frequency Thresholds (f
R
Ts = f
R
T1 and f
R
T2) obtained from a novel, low-cost, and simple method of breakpoint determination.
Methods
Fifty middle-aged males (age: 50–58 years;
V
˙
o
2peak
: 37.5 ± 8.6 mL·Kg
−1
·min
−1
), either healthy or with chronic illnesses, underwent an incremental cycle exercise test to determine maximal oxygen uptake (
V
˙
o
2max
/
V
˙
o
2peak
), GETs and f
R
Ts.
Results
There were no statistical differences [
P
> 0.05; ES: 0.17 to 0.32,
small
] between absolute and relative (56–60%
V
˙
o
2peak
) oxygen uptake (
V
˙
o
2
) values at GET1 with those obtained at f
R
T1, nor between
V
˙
o
2
values at GET2 with those at f
R
T2 (76–78%
V
˙
o
2peak
). Heart rate (HR) at f
R
T1, and
V
˙
o
2
and HR at f
R
T2 showed
very large
correlations (
r
= 0.75–0.82;
P
< 0.001) and
acceptable
precision (SEE < 7–9%) in determination of their corresponding values at GET1 and GET2. The precision in the estimation of
V
˙
o
2
at GET1 from f
R
T1 was
moderate
(SEE = 15%), while those of power output at GET1 (SEE = 23%) and GET2 (SEE = 12%) from their corresponding f
R
Ts values were
very poor
to
moderate
.
Conclusion
HR at f
R
T1 and
V
˙
o
2
and HR at f
R
T2, determined using a new objective and portable approach, may potentially serve as viable predictors of their respective GETs. This method may offer a simplified, cost-effective, and field-based approach for determining exercise threshold intensities during graded exercise.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><pmid>38849689</pmid><doi>10.1007/s00421-024-05520-4</doi><tpages>14</tpages><orcidid>https://orcid.org/0000-0002-8553-8154</orcidid><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1439-6319 |
| ispartof | European journal of applied physiology, 2024-11, Vol.124 (11), p.3227-3240 |
| issn | 1439-6319 1439-6327 1439-6327 |
| language | eng |
| recordid | cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_11519234 |
| source | MEDLINE; Springer Journals |
| subjects | Biomedical and Life Sciences Biomedicine Exercise - physiology Exercise Test - methods Gas exchange Heart rate Heart Rate - physiology Human Physiology Humans Male Middle age Middle Aged Occupational Medicine/Industrial Medicine Original Original Article Oxygen Consumption - physiology Pulmonary Gas Exchange - physiology Respiratory Rate - physiology Sports Medicine |
| title | A new objective method for determining exercise gas exchange thresholds by respiratory frequency in middle-aged men |
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