Respostas cardiopulmonares agudas ao exercício com Kettlebell

• Autor(a) principal: Fusi, Flor Bonadiman
• Data de Publicação: 2014
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da Universidade Federal do Espírito Santo (riUfes)
• Texto Completo: http://repositorio.ufes.br/handle/10/1579
• topic: Lung function test; Muscle strength; Oxygen consumption; Kettlebel; Consumo de oxigênio; Força muscular; Teste de função pulmonar; Educação Física; Oxigênio - Consumo; Testes de função respiratória; Aptidão física; 796

Introduction: The kettlebell (KB) is a tool of Russian origin, which has been used for strength work, flexibility and power. It is an iron ball with a handle. There are few studies that address the cardiopulmonary responses involved in this kind of effort. Objective: To compare the magnitudes of VO2 (oxygen consumption) and HR (Heart Rate) achieved through exercises with KB (swing and clean) with respect to their maximal responses and ventilatory anaerobic threshold (VAT) of women engaged in KB; compare caloric expenditure between the two exercise, the behavior of the HR, VO2 and RTR variables (Respiratory Exchange Ratio), and the pace of implementation versus time test (5 minutes). Methods: Twelve women trained for at least six months in office with KB were recruited. Cardiopulmonary treadmill exercise test (CPTE), an ongoing test of 5 minutes of exercise swing (with two hands), and a 5-minute quiz to clean exercise using a 12 kg KB was performed. We used the Student t test to compare the HR, VO2 and energy expenditure between the two exercises. Through the analysis of variance (ANOVA one way) compared the VO2 on the swing and clean with VO2 in VAT. was used ANOVA two-way repeated measures (ANOVA) to compare the behavior of variables VO2, RTR and HR every 20 seconds of the two tests with KB and to compare the pace of implementation, followed by post-hoc Tukey test (p <0,05). We used the Pearson correlation test to relate the VO2 with HR variable through the Excel program. Data are presented as mean ± standard deviation (SD). Results: There was no difference between the swing and clean for VO2 and HR and both had enough exercise requirement (percentage magnitude) to stimulate the cardiovascular system (VO2 at 75 % and 77 % of HR max and 93% and 95 % of for maximum swing and clean, respectively); both responses were above the VAT of participants with similar caloric expenditure (40.0 ± 0.4 kcal). As for the answers concerning the behavior did not differ between the swing and clean for the variables at any time of the 5- minute test, significant difference only for the pace of implementation (41 repetitions per minute ± 1 and 24 ± swing - 3- clean). Strong positive correlation was observed between VO2 and HR. Conclusions: The data suggest that both the swing and the clean present with acute cardiopulmonary system stimulating enough for possible chronic aerobic adaptations; since responses were above the VAT of participants, being in agreement with the intensity recommended by the American College of Sports Medicine (ACSM) for improving cardiorespiratory fitness.