Citation

Harriss AB, Abbott K, Kimpinski K, Holmes JD, Johnson AM, Walton DM, Dickey JP. Sports (Basel) 2019; 7(11): e7110229.

Affiliation

School of Kinesiology, University of Western Ontario, London, ON N6A 3K7, Canada. jdickey@uwo.ca.

Copyright

(Copyright © 2019, MDPI: Multidisciplinary Digital Publishing Institute)

DOI

10.3390/sports7110229

PMID

31689916

Abstract

Most head impacts in soccer occur from purposeful heading; however, the link between heading and neurological impairment is unknown. Previous work suggests concussion may result in an uncoupling between the autonomic nervous system and cardiovascular system. Accordingly, heart rate variability (HRV) may be a sensitive measure to provide meaningful information regarding repetitive heading in soccer. The purpose of this pilot study assesses the feasibility of measuring HRV to evaluate autonomic function following soccer heading. Sixteen youth female participants underwent heart rate monitoring during a heading and footing condition. Participants completed a five minute resting supine trial at the start and end of each testing session. Standard 450 g soccer balls were projected at 6 m/s towards participants. Participants performed five headers, for the header condition, and five footers for the footer condition. The HRV for resting supine trials, pre- and post-header and footer conditions were assessed for both time and frequency domains. HRV effect sizes were small when comparing conditions, except absolute low frequency (d = 0.61) and standard deviation of the normal-normal (NN) intervals (d = 0.63). Participant retention and adherence were high, without adverse events.

FINDINGS suggest HRV is a feasible measure for evaluating the effects of heading on autonomic function.

Language: en

Keywords

adolescents; autonomic nervous system; concussion; head impacts; subconcussion