Early Adaptations to a Two-Week Uphill Run Sprint Interval Training and Cycle Sprint Interval Training

This study sought to compare early physiological and performance adaptations between a two-week cycle sprint interval training (SIT) and uphill run sprint training (UST) programs. Seventeen recreationally active adult males (age = 28 ± 5 years; body mass (BM) = 78 ± 9 kg) were...

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Bibliographic Details
Main Authors: Mykolas Kavaliauskas (Author), John Jakeman (Author), John Babraj (Author)
Format: Book
Published: MDPI AG, 2018-07-01T00:00:00Z.
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Summary:This study sought to compare early physiological and performance adaptations between a two-week cycle sprint interval training (SIT) and uphill run sprint training (UST) programs. Seventeen recreationally active adult males (age = 28 &plusmn; 5 years; body mass (BM) = 78 &plusmn; 9 kg) were assigned to either a control (n = 5), SIT (n = 6), or UST (n = 6) group. A discrete group of participants (n = 6, age = 33 &plusmn; 6 years, and body mass = 80 &plusmn; 9 kg) completed both training protocols to determine acute physiological responses. Intervention groups completed either a run or cycle peak oxygen uptake (VO2peak) test (intervention type dependent) prior to and following two weeks of training. Training comprised of three sessions per week of 4 &times; 30-s &ldquo;all-out&rdquo; sprints with a four-minute active recovery between bouts on a cycle ergometer against 7.5% of body mass in the SIT group and on a 10% slope in the UST group. The VO2peak values remained unchanged in both training groups, but time-to-exhaustion (TTE) was significantly increased only in the UST group (pre&mdash;495 &plusmn; 40 s, post&mdash;551 &plusmn; 15 s; p = 0.014) and not in the SIT group (pre&mdash;613 &plusmn; 130 s, post&mdash;634 &plusmn; 118 s, p = 0.07). Ventilatory threshold (VT) was significantly increased in both training groups (SIT group: pre&mdash;1.94 &plusmn; 0.45 L&middot;min&minus;1, post&mdash;2.23 &plusmn; 0.42 L&middot;min&minus;1; p < 0.005, UST group: pre&mdash;2.04 &plusmn; 0.40 L&middot;min&minus;1, post&mdash;2.33 &plusmn; 0.34 L&middot;min&minus;1, p < 0.005). These results indicate that UST may be an effective alternative to SIT in healthy individuals.
Item Description:2075-4663
10.3390/sports6030072