title: Thermographic Assessment of Eccentric Overload Training Within Three Days of a Running Session.
abstract: The aim of this study was to analyze the changes in patellar and Achilles tendons between a group trained using eccentric overload and an untrained group within 3 days of a running session. To this end, infrared thermography (IRT) will be used. Twenty healthy male subjects were divided into 2 groups. One group performed a 6-week squat training in the flywheel before the running session. During the running intervention, both groups ran in 3 different days, for 1 hour each, at 80% maximal heart rate. Before, just after, and after 10 minutes of the running intervention, participants were assessed using IRT. Eccentrically trained groups showed a statistically significant difference (analysis of variance, p = 0.0049) expressed as a smaller bilateral increase in temperature in the patellar tendon just before the first running day (right side, 0.11 °C; left side, 0.29 °C). On the other days of running and in the Achilles tendon groups, similar changes were observed: an increase in the temperature after running and no significant difference between contralateral limbs. Our results point at eccentric overload training providing a better adaptation for the first day of running. IRT is an easy-to-apply noninvasive tool to analyze and compare the effects of performance on tendon tissues.
authors.affiliation: 1Valora Research Group, Health Sciences Faculty, San Jorge University, Zaragoza, Spain; 2Department of Health Sciences, Faculty of Health Sciences, University of Jaén, Jaén, Spain; and 3Research Group CTS-026 "Study Group on Physical Activity, Physiotherapy and Health," Jaén, Spain.
authors.forename: Fernando
authors.initials: F
authors.lastname: Sanz-López
authors.forename: Antonio
authors.initials: A
authors.lastname: Martínez-Amat
authors.forename: Fidel
authors.initials: F
authors.lastname: Hita-Contreras
authors.forename: Carlos
authors.initials: C
authors.lastname: Valero-Campo
authors.forename: César
authors.initials: C
authors.lastname: Berzosa
mesh_terms: D000125:Achilles Tendon / Q000502:physiology*; D000222:Adaptation, Physiological; D000293:Adolescent; D000328:Adult; D001831:Body Temperature / Q000502:physiology*; D006801:Humans; D008297:Male; D017847:Patellar Ligament / Q000502:physiology*; D055070:Resistance Training / Q000379:methods*; D012420:Running / Q000502:physiology*; D013817:Thermography; D016474:Weight-Bearing; D055815:Young Adult