SIL-6R is related to weekly training mileage and psychological well-being in athletes

Tom Cullen, Andrew W. Thomas, Richard Webb, Thom Phillips, Michael G. Hughes

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

INTRODUCTION: IL-6 has been ascribed both positive and negative roles in the context of exercise and training. The dichotomous nature of IL-6 signalling appears to be determined by the respective concentration of its receptors (both membrane-bound (IL-6R) and soluble (sIL-6R) forms). The purpose of the present study was to investigate the response of sIL-6R to long-term training, and to investigate the relationship between sIL-6R, self-reported measures of wellbeing, and upper respiratory illness symptoms (URS) in highly-trained endurance athletes. METHODS: Twenty-nine athletes provided resting blood samples, and completed wellbeing and illness monitoring questionnaires, on a weekly basis for a period of 18 weeks during a winter training block. RESULTS: URS were not correlated to concentrations of sIL-6R or cortisol, but there was a non-significant trend (P=0.08) for the most illness-prone athletes (as defined by self-reported illness questionnaire data) to exhibit higher average sIL-6R concentrations compared to the least ill (23.7+/-4.3 Vs 20.1+/-3.8 ng/ml). Concentrations of sIL-6R were positively correlated to subjective measures of stress (r=0.64, P=0.004) and mood (r=0.49, P=0.02), but were negatively correlated to sleep quality (r=-0.43, P=0.05) and cortisol concentration (r=-0.17, P=0.04). In a sub-group of 10 athletes, weekly training distance was quantified by coaching staff, and this negatively correlated with sIL-6R in the following week (r=-0.74, P
Original languageEnglish
Pages (from-to)1176-1183
Number of pages8
JournalMedicine and Science in Sports and Exercise
Volume49
Issue number6
DOIs
Publication statusPublished - 2017

Fingerprint

Athletes
Psychology
Hydrocortisone
Interleukin-6
Sleep
Exercise
Membranes
Surveys and Questionnaires

Keywords

  • Athletes
  • Fatigue
  • Overreaching
  • SIL-6R

Cite this

SIL-6R is related to weekly training mileage and psychological well-being in athletes. / Cullen, Tom; Thomas, Andrew W.; Webb, Richard; Phillips, Thom; Hughes, Michael G.

In: Medicine and Science in Sports and Exercise, Vol. 49, No. 6, 2017, p. 1176-1183.

Research output: Contribution to journalArticle

Cullen, Tom ; Thomas, Andrew W. ; Webb, Richard ; Phillips, Thom ; Hughes, Michael G. / SIL-6R is related to weekly training mileage and psychological well-being in athletes. In: Medicine and Science in Sports and Exercise. 2017 ; Vol. 49, No. 6. pp. 1176-1183.
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