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The Influence of "Super-Shoes" and Foot Strike Pattern on Metabolic Cost and Joint Mechanics in Competitive Female Runners.
- Source :
-
Medicine and science in sports and exercise [Med Sci Sports Exerc] 2024 Jul 01; Vol. 56 (7), pp. 1337-1344. Date of Electronic Publication: 2024 Feb 08. - Publication Year :
- 2024
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Abstract
- Purpose: The objective of this study is to assess the influence of "super-shoes" on metabolic cost and joint mechanics in competitive female runners and to understand how foot strike pattern may influence the footwear effects.<br />Methods: Eighteen competitive female runners ran four 5-min bouts on a force instrumented treadmill at 12.9 km·h -1 in 1) Nike Vaporfly Next% 2™ (SUPER) and 2) Nike Pegasus 38™ (CON) in a randomized and mirrored order.<br />Results: Metabolic power was improved by 4.2% ( P < 0.001; d = 0.43) and metatarsophalangeal (MTP) negative work ( P < 0.001; d = 1.22), ankle negative work ( P = 0.001; d = 0.67), and ankle positive work ( P < 0.001; d = 0.97) were all smaller when running in SUPER compared with CON. There was no correlation between foot strike pattern and the between-shoe (CON to SUPER) percentage change for metabolic power ( r = 0.093, P = 0.715).<br />Conclusions: Metabolic power improved by 4.2% in "super-shoes" (but only by ~3.2% if controlling for shoe mass differences) in this cohort of competitive female runners, which is a smaller improvement than previously observed in men. The reduced mechanical demand at the MTP and ankle in "super-shoes" are consistent with previous literature and may explain or contribute to the metabolic improvements observed in "super-shoes"; however, foot strike pattern was not a moderating factor for the metabolic improvements of "super-shoes." Future studies should directly compare the metabolic response among different types of "super-shoes" between men and women.<br /> (Copyright © 2024 by the American College of Sports Medicine.)
Details
- Language :
- English
- ISSN :
- 1530-0315
- Volume :
- 56
- Issue :
- 7
- Database :
- MEDLINE
- Journal :
- Medicine and science in sports and exercise
- Publication Type :
- Academic Journal
- Accession number :
- 38376997
- Full Text :
- https://doi.org/10.1249/MSS.0000000000003411