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Abstract
This study investigated the effects of a daily plyometric hopping intervention on running economy (RE) in amateur runners. In a randomized, controlled trial, thirty-four amateur runners (29 ± 7 years, 27 males) were allocated to a control or a hopping exercise group. During the six-week study, the exercise group performed 5 min of double-legged hopping exercise daily. To progressively increase loading, the number of hopping bouts (10 s each) was steadily increased while break duration between sets was decreased. Pre- and post-intervention, RE, peak oxygen uptake (VO2peak), and respiratory exchange ratio (RER) were measured during 4-min stages at three running speeds (10, 12, and 14 km/h). ANCOVAs with baseline values and potential cofounders as cofactors were performed to identify differences between groups. ANCOVA revealed an effect of hopping on RE at 12 km/h (df = 1; F = 4.35; p < 0.05; η2 = 0.072) and 14 km/h (df = 1; F = 6.72; p < 0.05; η2 = 0.098), but not at 10 km/h (p > 0.05). Exercise did not affect VO2peak (p > 0.05), but increased RER at 12 km/h (df = 1; F = 4.26; p < 0.05; η2 = 0.059) and 14 km/h (df = 1; F = 36.73; p < 0.001; η2 = 0.520). No difference in RER was observed at 10 km/h (p > 0.05). Daily hopping exercise is effective in improving RE at high running speeds in amateurs and thus can be considered a feasible complementary training program.
Clinical trial registration German Register of Clinical Trials (DRKS00017373).
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Details
1 Goethe University Frankfurt, Division Health and Performance, Institute of Occupational, Social and Environmental Medicine, Frankfurt Am Main, Germany (GRID:grid.7839.5) (ISNI:0000 0004 1936 9721)
2 Johannes Gutenberg University Mainz, Department of Sports Medicine, Disease Prevention and Rehabilitation, Mainz, Germany (GRID:grid.5802.f) (ISNI:0000 0001 1941 7111)
3 Goethe University Frankfurt, Department of Sports Medicine and Exercise Physiology, Institute of Sports Sciences, Frankfurt Am Main, Germany (GRID:grid.7839.5) (ISNI:0000 0004 1936 9721)
4 Goethe University, Frankfurt, Institute of Occupational, Social and Environmental Medicine, Frankfurt Am Main, Germany (GRID:grid.7839.5) (ISNI:0000 0004 1936 9721)
5 Goethe University, Frankfurt, Institute of Occupational, Social and Environmental Medicine, Frankfurt Am Main, Germany (GRID:grid.7839.5) (ISNI:0000 0004 1936 9721); University of Klagenfurt, Departement of Movement Sciences, Klagenfurt, Austria (GRID:grid.7520.0) (ISNI:0000 0001 2196 3349)