Brachial artery endothelial function (mean±SD) pre and post an acute 30 min bout of moderate-intensity continuous (CON, n=15), moderate-intensity interval (MOD-INT, n=14) and heavy-intensity interval (HEAVY-INT) exercise (n=9)
| CON | MOD-INT | HEAVY-INT | ||||
| Pre | Post | Pre | Post | Pre | Post | |
| Resting diameter (mm) | 3.4±0.5 | 3.4±0.4 | 3.5±0.4 | 3.4±0.4 | 3.2±0.5 | 3.2±0.5 |
| Time from cuff release to peak diameter (s) | 45±17 | 49±23 | 53±16 | 51±19 | 69±20 | 75±27 |
| Insonation angle (°) | 68±1 | 68±1 | 68±1 | 68±1 | 68±1 | 68±1 |
| Relative FMD (%) | 6.1±2.5 | 6.0±4.2 | 5.3±2.5 | 5.3±3.2 | 4.9±1.7 | 4.3±1.7 |
| VTIpeak (cm) | 1442±602 | 1620±775 | 1681±597 | 1719±709 | 2198±526 | 2213±835 |
| VTI60 (cm) | 1634±5493 | 1797±565 | 1806±435 | 1861±410 | 2106±472 | 1909±455 |
| VTI90 (cm) | 2111±648 | 2261±765 | 2281±564 | 2364±579 | 2550±650 | 2368±592 |
| Peak reactive hyperaemia (cm/s) | 71±28 | 74±32 | 88±33 | 87±25 | 110±14 | 104±23 |
| Peak shear rate (/s–1) | 1635±659 | 1746±813 | 2072±892 | 2096±723 | 2830±557 | 2640±573 |
| AUCpeak (a.u.) | 33 204±15 071 | 37 500±16 200 | 39 477±15 399 | 40 027±14 399 | 55 508±13 056 | 55 647±19 664 |
| AUC60 (a.u.) | 37 825±12 899 | 42 027±12 830 | 42 292±11 723 | 44 053±9443 | 53 132±11 319 | 48 403±12 482 |
| AUC90 (a.u.) | 48 785±16 752 | 52 657±16 587 | 53 211±14 127 | 55 796±12 521 | 64 237±15 371 | 59 953±16 039 |
No significant effects of exercise or group by time interactions were revealed (p>0.05).
AUC, shear rate area under the curve; FMD, flow-mediated dilation; VTI, velocity–time integral.