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Indexed/Abstracted in: BIOSIS Previews, EMBASE, Scopus, Emerging Sources Citation Index
Online ISSN 1827-1812
Burnet E. N. 1, Pidcoe P. E. 2
1 Department of Kinesiology and Health Sciences, The College of William and Mary Williamburg, VA, USA;
2 Department of Physical Therapy, Virginia Commonwealth University, Richmond, VA, USA
Aim. Core stability in runners, to include control of frontal plane pelvic motion, is a current focus in the research and clinical settings for treatment, injury prevention, and running performance. Previous research has shown a direct link between increased ground reaction forces and metabolic costs while running. Unfortunately, there is a research void assessing the effect of an increased pelvic drop on running performance. The objective of this study was to investigate the effect of frontal plane pelvic drop on changes in metabolic energy demands while running.
Methods. Ten healthy, recreational runners (5 males, 5 females) who ran an average of ≥ 8.05 km per week were obtained from a sample of convenience. Subjects ran on a treadmill for 30 minutes at a self-selected, maintenance speed (mean 10.91±0.98 km/h) while bilateral three-dimensional pelvic kinematic data were collected for 10 seconds at each 2 minute increment. Oxygen consumption (VO2) data were collected, averaged between minutes 0 to 5 and 25 to 30 of the run, and converted to running economy (RE).
Results. A relatively low association (R=0.327, P=0.356) suggested there was a poor association between changes in RE and changes in frontal plane pelvic drop during the 30 minute run.
Conclusion. These results suggest that increased frontal plane pelvic drop did not result in increased energy demands in these subjects. Research in additional kinematic and kinetic variables is warranted to investigate whether an interaction of these variables better correlates to RE.