Cardiovascular responses to heat acclimatisation in athletes with spinal cord injury
To determine the effect of heat acclimatisation (HA) training on blood profile and resting cardiac function in elite athletes with spinal cord injury (SCI). Quasi-experimental. Eleven athletes (10m, 1f) with SCI (C5-T3) completed a five-day isothermic HA protocol whereby gastrointestinal temperature...
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| Veröffentlicht in: | Journal of science and medicine in sport 2021-08, Vol.24 (8), p.756-762 |
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| container_title | Journal of science and medicine in sport |
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| creator | Gee, Cameron M. Lacroix, Melissa A. Pethick, Wendy A. Côté, Patrick Stellingwerff, Trent West, Christopher R. |
| description | To determine the effect of heat acclimatisation (HA) training on blood profile and resting cardiac function in elite athletes with spinal cord injury (SCI).
Quasi-experimental.
Eleven athletes (10m, 1f) with SCI (C5-T3) completed a five-day isothermic HA protocol whereby gastrointestinal temperature (Tc) was elevated to and maintained at ∼38.5 degrees Celsius (°C) via intermittent exercise for sixty minutes each day. Blood samples were collected pre- and post-HA to determine changes in plasma volume (PV). Doppler ultrasound of the left-ventricular outflow tract and 2-d speckle tracking echocardiography were performed in a subset of athletes (n=5) to determine changes in indices of resting left-ventricular function and mechanics, respectively.
Ten athletes were successfully able to raise and maintain Tc to 38.5°C. There was a non-significant increase in PV with HA training (ΔPV%: 3.0±5.4%, p=0.086). Following HA, resting HR decreased (63±4 pre-HA vs. 58±5 bpm post-HA, p=0.020), velocity time integral (21.4±2.7 vs. 23.7±3.0cm, p=0.045) and stroke volume increased (64.8±7.6 vs. 70.2±10.5mL, p=0.055).
Our findings suggest a short-term HA protocol in athletes with SCI is safe and may induce beneficial changes in indices of resting left-ventricular function — however results are highly individualized. Future studies on HA in athletes with SCI should focus on determining mechanisms of adaptation and performance outcomes. |
| doi_str_mv | 10.1016/j.jsams.2021.01.007 |
| format | Article |
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Quasi-experimental.
Eleven athletes (10m, 1f) with SCI (C5-T3) completed a five-day isothermic HA protocol whereby gastrointestinal temperature (Tc) was elevated to and maintained at ∼38.5 degrees Celsius (°C) via intermittent exercise for sixty minutes each day. Blood samples were collected pre- and post-HA to determine changes in plasma volume (PV). Doppler ultrasound of the left-ventricular outflow tract and 2-d speckle tracking echocardiography were performed in a subset of athletes (n=5) to determine changes in indices of resting left-ventricular function and mechanics, respectively.
Ten athletes were successfully able to raise and maintain Tc to 38.5°C. There was a non-significant increase in PV with HA training (ΔPV%: 3.0±5.4%, p=0.086). Following HA, resting HR decreased (63±4 pre-HA vs. 58±5 bpm post-HA, p=0.020), velocity time integral (21.4±2.7 vs. 23.7±3.0cm, p=0.045) and stroke volume increased (64.8±7.6 vs. 70.2±10.5mL, p=0.055).
Our findings suggest a short-term HA protocol in athletes with SCI is safe and may induce beneficial changes in indices of resting left-ventricular function — however results are highly individualized. Future studies on HA in athletes with SCI should focus on determining mechanisms of adaptation and performance outcomes.</description><identifier>ISSN: 1440-2440</identifier><identifier>EISSN: 1878-1861</identifier><identifier>DOI: 10.1016/j.jsams.2021.01.007</identifier><identifier>PMID: 33558190</identifier><language>eng</language><publisher>Australia: Elsevier Ltd</publisher><subject>Cardiovascular system ; Cooling ; Exercise ; Heat ; Intervention ; Paralympic Games ; Physical fitness ; Physiology ; Rugby ; Spinal cord injuries ; Sympathetic nervous system ; Thermoregulation ; Wheelchair rugby ; Wheelchairs</subject><ispartof>Journal of science and medicine in sport, 2021-08, Vol.24 (8), p.756-762</ispartof><rights>2021 Sports Medicine Australia</rights><rights>Copyright © 2021 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.</rights><rights>2021. Sports Medicine Australia</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c387t-8e35ce24f9a7c4a444fd371cfe6a40ad69ac5ca27a25664bbf9ee465d4f339993</citedby><cites>FETCH-LOGICAL-c387t-8e35ce24f9a7c4a444fd371cfe6a40ad69ac5ca27a25664bbf9ee465d4f339993</cites><orcidid>0000-0003-0333-1836</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.proquest.com/docview/2554331284?pq-origsite=primo$$EHTML$$P50$$Gproquest$$H</linktohtml><link.rule.ids>314,777,781,3537,27905,27906,45976,64364,64366,64368,72218</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/33558190$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Gee, Cameron M.</creatorcontrib><creatorcontrib>Lacroix, Melissa A.</creatorcontrib><creatorcontrib>Pethick, Wendy A.</creatorcontrib><creatorcontrib>Côté, Patrick</creatorcontrib><creatorcontrib>Stellingwerff, Trent</creatorcontrib><creatorcontrib>West, Christopher R.</creatorcontrib><title>Cardiovascular responses to heat acclimatisation in athletes with spinal cord injury</title><title>Journal of science and medicine in sport</title><addtitle>J Sci Med Sport</addtitle><description>To determine the effect of heat acclimatisation (HA) training on blood profile and resting cardiac function in elite athletes with spinal cord injury (SCI).
Quasi-experimental.
Eleven athletes (10m, 1f) with SCI (C5-T3) completed a five-day isothermic HA protocol whereby gastrointestinal temperature (Tc) was elevated to and maintained at ∼38.5 degrees Celsius (°C) via intermittent exercise for sixty minutes each day. Blood samples were collected pre- and post-HA to determine changes in plasma volume (PV). Doppler ultrasound of the left-ventricular outflow tract and 2-d speckle tracking echocardiography were performed in a subset of athletes (n=5) to determine changes in indices of resting left-ventricular function and mechanics, respectively.
Ten athletes were successfully able to raise and maintain Tc to 38.5°C. There was a non-significant increase in PV with HA training (ΔPV%: 3.0±5.4%, p=0.086). Following HA, resting HR decreased (63±4 pre-HA vs. 58±5 bpm post-HA, p=0.020), velocity time integral (21.4±2.7 vs. 23.7±3.0cm, p=0.045) and stroke volume increased (64.8±7.6 vs. 70.2±10.5mL, p=0.055).
Our findings suggest a short-term HA protocol in athletes with SCI is safe and may induce beneficial changes in indices of resting left-ventricular function — however results are highly individualized. Future studies on HA in athletes with SCI should focus on determining mechanisms of adaptation and performance outcomes.</description><subject>Cardiovascular system</subject><subject>Cooling</subject><subject>Exercise</subject><subject>Heat</subject><subject>Intervention</subject><subject>Paralympic Games</subject><subject>Physical fitness</subject><subject>Physiology</subject><subject>Rugby</subject><subject>Spinal cord injuries</subject><subject>Sympathetic nervous system</subject><subject>Thermoregulation</subject><subject>Wheelchair rugby</subject><subject>Wheelchairs</subject><issn>1440-2440</issn><issn>1878-1861</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><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>eNp9kE1r3DAQQEVpadIkvyAQDL3k4q0-LfuQQ1mSthDoJTmLWXnMynitjUZOyb-Pkk166KEwkgb0ZjR6jJ0LvhJcNN_G1Uiwo5XkUqx4CW4_sGPR2rYWbSM-llxrXsuyHbEvRCPn0lhlP7MjpYxpRceP2d0aUh_iI5BfJkhVQtrHmZCqHKstQq7A-ynsIAcqK85VmCvI2wlzYf6EvK1oH2aYKh9TXy7HJT2dsk8DTIRnb-cJu7-5vlv_rG9___i1_n5be9XaXLeojEephw6s16C1HnplhR-wAc2hbzrwxoO0IE3T6M1m6BB1Y3o9KNV1nTphl4e--xQfFqTsdoE8ThPMGBdyUrfWastNU9Cv_6BjXFKZu1DGaKWEbHWh1IHyKRIlHNw-lb-nJye4e5HuRvcq3b1Id7wEt6Xq4q33stlh_7fm3XIBrg4AFhmPAZMjH3D22IeEPrs-hv8-8Ay9DZSu</recordid><startdate>20210801</startdate><enddate>20210801</enddate><creator>Gee, Cameron M.</creator><creator>Lacroix, Melissa A.</creator><creator>Pethick, Wendy A.</creator><creator>Côté, Patrick</creator><creator>Stellingwerff, Trent</creator><creator>West, Christopher R.</creator><general>Elsevier Ltd</general><general>Elsevier Limited</general><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>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>8G5</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AYAGU</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>K9.</scope><scope>KB0</scope><scope>M0S</scope><scope>M1P</scope><scope>M2O</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><orcidid>https://orcid.org/0000-0003-0333-1836</orcidid></search><sort><creationdate>20210801</creationdate><title>Cardiovascular responses to heat acclimatisation in athletes with spinal cord injury</title><author>Gee, Cameron M. ; 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Quasi-experimental.
Eleven athletes (10m, 1f) with SCI (C5-T3) completed a five-day isothermic HA protocol whereby gastrointestinal temperature (Tc) was elevated to and maintained at ∼38.5 degrees Celsius (°C) via intermittent exercise for sixty minutes each day. Blood samples were collected pre- and post-HA to determine changes in plasma volume (PV). Doppler ultrasound of the left-ventricular outflow tract and 2-d speckle tracking echocardiography were performed in a subset of athletes (n=5) to determine changes in indices of resting left-ventricular function and mechanics, respectively.
Ten athletes were successfully able to raise and maintain Tc to 38.5°C. There was a non-significant increase in PV with HA training (ΔPV%: 3.0±5.4%, p=0.086). Following HA, resting HR decreased (63±4 pre-HA vs. 58±5 bpm post-HA, p=0.020), velocity time integral (21.4±2.7 vs. 23.7±3.0cm, p=0.045) and stroke volume increased (64.8±7.6 vs. 70.2±10.5mL, p=0.055).
Our findings suggest a short-term HA protocol in athletes with SCI is safe and may induce beneficial changes in indices of resting left-ventricular function — however results are highly individualized. Future studies on HA in athletes with SCI should focus on determining mechanisms of adaptation and performance outcomes.</abstract><cop>Australia</cop><pub>Elsevier Ltd</pub><pmid>33558190</pmid><doi>10.1016/j.jsams.2021.01.007</doi><tpages>7</tpages><orcidid>https://orcid.org/0000-0003-0333-1836</orcidid></addata></record> |
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| ispartof | Journal of science and medicine in sport, 2021-08, Vol.24 (8), p.756-762 |
| issn | 1440-2440 1878-1861 |
| language | eng |
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| source | Elsevier ScienceDirect Journals; ProQuest Central UK/Ireland |
| subjects | Cardiovascular system Cooling Exercise Heat Intervention Paralympic Games Physical fitness Physiology Rugby Spinal cord injuries Sympathetic nervous system Thermoregulation Wheelchair rugby Wheelchairs |
| title | Cardiovascular responses to heat acclimatisation in athletes with spinal cord injury |
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