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Time course of neuromuscular recovery after running training session: influence of intensity, hot water immersion and cold water immersion

Grant number: 21/08479-0
Support Opportunities:Scholarships in Brazil - Doctorate
Effective date (Start): March 01, 2022
Effective date (End): February 29, 2024
Field of knowledge:Health Sciences - Physical Education
Principal Investigator:Alessandro Moura Zagatto
Grantee:Yago Medeiros Dutra
Host Institution: Faculdade de Ciências (FC). Universidade Estadual Paulista (UNESP). Campus de Bauru. Bauru , SP, Brazil


The time course of neuromuscular disorders after running, a common conditioning exercise in different sports, is incipient and due to the tendency of these disorders to change due to the intensity of the effort performed, it is possible that the effectiveness of strategies aimed at accelerating the recovery of neuromuscular performance post-exercise changes between different running training session intensities. Thus, this project aims to: (I) characterize the time course and (II) investigate the influence of hot water immersion and cold water immersion on neuromuscular performance after different running training sessions. After sessions that cause greater disturbance in the peripheral components of the motor pathway, it is possible that immersion in hot water is more effective in recovering neuromuscular performance, while immersion in cold water can be more effective after sessions that cause greater disturbance in the central components. Two independent studies will be carried out. In study 1 (crossover, n=12), the volunteers will perform three training models: continuous training at the intensity of the respiratory compensation point (iPCR, 30 minutes), high-intensity, long-duration interval training (HIITlong, S2 minutes, 1:1) and high intensity, short-duration interval training (HIITshort, 1 minute, 1:1). For analysis of neuromuscular performance will be used tests of maximum voluntary isometric contraction of knee extensors associated with the technique of twitch interpolation and countermovement vertical jump before, immediately after, 1, 2, 4 and 6 hours after the end of the sessions. In study 2 (independent groups, n=12), the volunteers will be divided into three groups and each group will repeat on three different days one of the training models described in study 1. After each session, the volunteers will be submitted to placebo, cold water immersion or hot water immersion. Neuromuscular performance assessments (as described in Study 1) will be performed before, immediately after, 1, 2, 4 and 6 hours after the end of the training sessions. (AU)

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