Navegando por Autor "Marques, Martim Francisco Bottaro"
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- ItemCould whole-body cryotherapy (below −100°C) improve muscle recovery from muscle damage?(2014) Ferreira Júnior, João Batista; Marques, Martim Francisco Bottaro; Loenneke, Jeremy Paul; Vieira, Amilton; Vieira, Carlos Alexandre; Bemben, Michael George
- ItemDoes whole-body cryotherapy improve vertical jump recovery following a high-intensity exercise bout?(2015) Vieira, Amilton; Marques, Martim Francisco Bottaro; Ferreira Júnior, João Batista; Vieira, Carlos Alexandre; Cleto, Vitor Alonso; Cadore, Eduardo Lusa; Simões, Herbert Gustavo; Carmo, Jake Carvalho do; Brown, Lee E.Whole-body cryotherapy (WBC) has been used as a recovery strategy following different sports activities. Thus, the aim of the study reported here was to examine the effect of WBC on vertical jump recovery following a high-intensity exercise (HIE) bout. Twelve trained men (mean ± standard deviation age = 23.9±5.9 years) were randomly exposed to two different conditions separated by 7 days: 1) WBC (3 minutes of WBC at -110°C immediately after the HIE) and 2) control (CON; no WBC after the HIE). The HIE consisted of six sets of ten repetitions of knee extensions at 60° ⋅ s-1 concentric and 180° ⋅ s-1 eccentric on an isokinetic dynamometer. The vertical jump test was used to evaluate the influence of HIE on lower extremity muscular performance. The vertical jump was performed on a force platform before HIE (T1) and 30 minutes after (T2) the WBC and CON conditions. As a result of HIE, jump height, muscle power, and maximal velocity (Vmax) had significant decreases between T1 and T2, however no significance was found between the WBC and CON conditions. The results indicate that one session of WBC had no effect on vertical jump following an HIE compared with a CON condition. WBC may not improve muscle-function (dependent on stretch-shortening cycle) recovery in very short periods (ie, 30 minutes) following HIE.
- ItemSingle vs. multi-joint resistance exercises: effects on muscle strength and hypertrophy(2015-06) Gentil, Paulo Roberto Viana; Soares, Saulo Rodrigo Sampaio; Marques, Martim Francisco BottaroBackground: Some authors suggest that single joint (SJ) exercises promote greater muscle hypertrophy because they are easier to be learned and therefore have less reliance on neural factors. On the other hand, some authors recommend an emphasis on multi-joint (MJ) exercises for maximizing muscle strength, assuming that MJ exercises are more effective than SJ exercises because they enable a greater magnitude of weight to be lifted. Objectives: The present study aimed to compare the effects of MJ vs. SJ exercises on muscle size and strength gains in untrained young men. Patients and Methods: Twenty-nine young men, without prior resistance training experience, were randomly divided into two groups. One group performed (n = 14) only MJ exercises involving the elbow flexors (lat. pull downs), while the other (n = 15) trained the elbow flexors muscles using only SJ exercises (biceps curls). Both groups trained twice a week for a period of ten weeks. The volunteers were evaluated for peak torque of elbow flexors (PT) in an isokinetic dynamometer and for muscle thickness (MT) by ultrasonography. Results: There were significant increases in MT of 6.10% and 5.83% for MJ and SJ, respectively; and there were also significant increases in PT for MJ (10.40%) and SJ (11.87%). However, the results showed no difference between groups pre or post training for MT or PT. Conclusions: In conclusion, the results of the present study suggest that MJ and SJ exercises are equally effective for promoting increases in upper body muscle strength and size in untrained men. Therefore, the selection between SJ and MJ exercises should be based on individual and practical aspects, such as, equipment availability, movement specificity, individual preferences and time commitment.
- ItemThe effects of resistance training on lower and upper body strength gains in young women(2015) Gentil, Paulo Roberto Viana; Ferreira Júnior, João Batista; Bemben, Michael George; Ferreira, Diogo Vilela; Marques, Martim Francisco BottaroIt has been reported that hypertrophy gains is greater in upper body compared to lower body, however, there is no consensus that muscular strength gains are greater in upper body than in lower body. Therefore, the aim of the present study was to compare the strength gains between knee extensors and elbow flexors in response to similar resistance training regimens. Fifty five untrained young women (age: 21.6 ± 2.9 years, weight: 58.3 ± 9.0 kg and height: 163.6 ± 7.5 cm (Mean±SD)) participated in the study as volunteers. Resistance training was performed twice a week for 10 weeks. All subjects performed three sets of 8-12 maximum repetitions for leg press, knee flexion, lat pull down and bench press exercises. Unilateral knee extensors and elbow flexors peak torque (PT) were measured before and after the training period by performing two sets of four repetitions at 60°s-1, on an isokinetic dynamometer. There were significant increases in PT for both elbow flexors (11.74% [8.0, 17.7], p< 0.05) and knee extensors (11.45% [9.2, 15.3], p< 0.05) with no differences between muscle groups p> 0.05). However, there was no correlation between gains in knee extensors and elbow flexors PT. The analysis of knee extensors PT lead to the formation of two clusters groups: 1) High responders (n=10): 28.29 ± 8.74% and 2) Low-responders (n=37): 7.94 ± 5.95%. Both groups had significant increases in knee extensors PT, however, increases in the high responders were higher than in low responders (p< 0.05).These results suggest that upper- and lower body muscles present similar strength gains after similar resistance training regimens in untrained young women, although individual muscle response may vary in upper and lower body muscles.