Acute Exercise and Insulin Sensitivity in Boys: A Time-Course Study
dc.contributor.author | Cockcroft, EJ | |
dc.contributor.author | Williams, CA | |
dc.contributor.author | Weaver, H | |
dc.contributor.author | O'Connor, A | |
dc.contributor.author | Jackman, SR | |
dc.contributor.author | Armstrong, N | |
dc.contributor.author | Barker, AR | |
dc.date.accessioned | 2017-11-28T11:11:49Z | |
dc.date.issued | 2017-10-01 | |
dc.description.abstract | This study examined the time course of adaptions in insulin sensitivity (IS) in adolescent boys after acute high-intensity interval exercise (HIIE) and moderate-intensity exercise (MIE). Eight boys (15.1±0.4 y) completed three 3-day experimental trials in a randomised order: 1) 8×1 min cycling at 90% peak power with 75 s recovery (HIIE); 2) cycling at 90% of gas exchange threshold for a duration to match work during HIIE (MIE); and 3) rest (CON). Plasma [glucose] and [insulin] were measured before (PRE-Ex), 24 and 48 h post (24 h-POST, 48 h-POST) in a fasted state, and 40 min (POST-Ex) and 24 h (24 h-POST) post in response to an oral glucose tolerance test (OGTT). IS was estimated using the Cederholm (OGTT) and HOMA (fasted) indices. There was no change to HOMA at 24 h or 48 h-POST (all P>0.05). IS from the OGTT was higher POST-EX for HIIE compared to CON (17.4%, P=0.010, ES=1.06), and a non-significant increase in IS after MIE compared to CON (9.0%, P=0.14, ES=0.59). At 24 h-POST, IS was higher following both HIIE and MIE compared to CON (HIIE: P=0.019, 13.2%, ES=0.88; MIE: 9.7%, P=0.024, ES=0.65). In conclusion, improvements to IS after a single bout of HIIE and MIE persist up to 24 h after exercise when assessed by OGTT. | en_GB |
dc.identifier.citation | Published online 1 October 2017 | en_GB |
dc.identifier.doi | 10.1055/s-0043-118007 | |
dc.identifier.uri | http://hdl.handle.net/10871/30486 | |
dc.language.iso | en | en_GB |
dc.publisher | Thieme Publishing | en_GB |
dc.rights.embargoreason | Publisher policy | en_GB |
dc.rights | © 2017 Georg Thieme Verlag KG Stuttgart | en_GB |
dc.subject | Cardiometabolic health | en_GB |
dc.subject | physical activity | en_GB |
dc.subject | youth | en_GB |
dc.subject | HOMA | en_GB |
dc.subject | glucose | en_GB |
dc.title | Acute Exercise and Insulin Sensitivity in Boys: A Time-Course Study | en_GB |
dc.type | Article | en_GB |
dc.identifier.issn | 0172-4622 | |
exeter.place-of-publication | Germany | en_GB |
dc.description | This is the author accepted manuscript. The final version is available from Thieme Publishing via the DOI in this record. | en_GB |
dc.identifier.eissn | 1439-3964 | |
dc.identifier.journal | International Journal of Sports Medicine | en_GB |
dc.identifier.pmid | 28965340 |