Banca de DEFESA: JOSÉ FRANCISCO DA SILVA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : JOSÉ FRANCISCO DA SILVA
DATE: 22/09/2023
TIME: 10:00
LOCAL: DEF
TITLE:

ACUTE EFFECT OF VASCULAR OCCLUSION AND ISCHEMIC PRECONDITIONING ON AEROBIC PERFORMANCE

 

KEY WORDS:

Keywords: Vascular occlusion; Muscle strength; Ischemia; Endurance.

PAGES: 55
BIG AREA: Ciências da Saúde
AREA: Educação Física
SUMMARY:

The aim of this study was to verify the acute effects of vascular occlusion and ischemic preconditioning on aerobic performance. The present study was built based on the findings produced in two articles, one review article and one experimental article. The review study aimed to understand the main effects acutely caused by exercise with blood flow restriction on physical performance and involved experimental studies published until September 2021 in the Web of Science databases (Categories: Sports Sciences and Physiology) , PubMed and SPORTDicus. At the end of the selection of evidence sources, 22 articles were included in the review, published between 2011 and 2021, covering a total of 304 individuals (men, n= 275; women, n= 29) with an average of age ranging from 20 to 29.6 years, all eligible and included studies were clinical trials and experimental studies. From all the findings in this review, a selection of studies that dealt with the acute effects of vascular occlusion on aerobic performance was made. The second article involved a randomized, controlled, crossover and single-blind crossover clinical trial and aimed to analyze the acute effect of ischemic preconditioning on running performance. The sample consisted of 26 male amateur runners, with a mean age of 31.85 years (±7.35), mean body mass index of 24.96 (±2.99), mean height of 1.70m (±0.06) and mean body surface area of 2.95m² (±0.10). The average mark in the 5kms and 10kms distance of the study participants was 21.05min (±2.59) and 44.26min (±5.39) respectively. Participants underwent the following interventions: (i) IPC + maximum incremental test or (ii) Control/Placebo + maximum incremental test. The mean time to exhaustion was longer in the IPC condition compared to the Placebo condition (IPC - 1184sec ±202; Placebo - 1150sec ±189), but no statistically significant difference (p˂0.135) was identified between the conditions. The average HR of the sample during the incremental tests of maximum running speed from 8km/h to 13km/h, when comparing the IPC x Placebo conditions, did not present any significant difference (p˂0.066). The mean SO between speeds from 8km/h to 13km/h did not present any significant difference (p˂0.236), when comparing the IPC x Placebo conditions. It is concluded that the use of flow restriction during a session of resistance exercises with low load, can be a viable strategy with athletes of endurance sports for maintenance and improvement of the levels of hypertrophy and mainly muscular strength, not having, therefore, , the need to submit these athletes to a high load during the resistance training session, with the aim of improving their strength levels for the sport practiced. It is also possible to conclude that the ischemic preconditioning protocol used in the present study, based on 2 series of 3 minutes of ischemia separated by 3 minutes of rest (perfusion), did not present an effect on the improvement of the time until exhaustion in male and female runners. males analyzed in this study.

 

COMMITTEE MEMBERS:
Presidente - 2627140 - BRENO GUILHERME DE ARAUJO TINOCO CABRAL
Interno - 1793257 - ARNALDO LUIS MORTATTI
Interno - 2626634 - PAULO MOREIRA SILVA DANTAS
Externo à Instituição - FELIPE JOSÉ AIDAR MARTINS - UFS
Externo à Instituição - GILMARIO RICARTE BATISTA - UFPE