CONSIDERATIONS FOR THE DOSE RESPONSE IN SPRINT INTERVAL ... is unknown, as are the residual effects once the training stimulus is removed.
Abstr.-ID: 182
CONSIDERATIONS FOR THE DOSE RESPONSE IN SPRINT INTERVAL TRAINING INTERVENTIONS OCONNOR, D., COBLEY, J.N., BABRAJ, J.A., MALONE, J.K. UNIVERSITY COLLEGE DUBLIN Introduction Lack of time is cited as a common barrier to exercise participation (Gibala et al. 2012). High intensity protocols (e.g. HIIT/SIT) have emerged as effective, time-efficient alternatives to moderate intensity continuous training (Metcalfe et al. 2012). Similar benefits to aerobic capacity and body composition using low vs. high volume sessions of SIT bouts (20s) have been found after 8 wks (Logan et al., 2016). However, the dose response of much shorter SIT bouts (< 10s), which may be better tolerated, is unknown, as are the residual effects once the training stimulus is removed. Methods Thirteen healthy sedentary males were matched for VO2peak and assigned to either a low dose (LDG: n = 7) or a high dose (HDG: n = 6) supervised 6-wk concurrent SIT intervention (2/wk of SIT (LDG = 2 sets of 5 x 6s ON: 18s OFF bouts; HDG = 4 - 6 sets of 5 x 6s:18s bouts) and x1/wk resistance training (3 exercises @ 3x10 reps), which began immediately following a 6-wk control period (BL 1&2). Participants were tested at BL 1&2, 48-72 h post intervention (0Post) and 3 wk post (3Post) for physiological and psychological indices of health. Results VO2peak increased significantly in both groups (LDG: 32.3 ± 7.6 to 37.6 ± 10.0 ml.kg.-1.min-1; +16%; HDG: 34.4 ± 3.1 to 38.1 ± 3.8 ml. kg.- 1.min-1; +11%) compared to BL 2 (P
