Exercise can generate alterations in body composition and modulate the immune system. The objective of this study was to verify whether a circuit resistance training (CRT) protocol can increase lean body mass (LM), and reduce fat body mass (FM) and the percent of FM (%FM) of sedentary women, without inducing inflammatory responses, indicated by serum cytokine levels. The initial hypothesis was that CRT would improve body composition, without changing serum cytokine levels. The study consisted of 14 healthy, sedentary women, aged 33-45 years (mean +/- SD, 40.23 +/- 3.98 years), with a normal body mass index. They participated in 3 sessions per week of CRT, which included 2 rounds in 9 stations with 1 set of 8-12 repetition maximum at each station, for 10 weeks. During the 10-week CRT period, participants maintained their pretraining nutritional standard. Body composition was analysed with dual-energy X-ray absorptiometry both pre- and post-training. Blood samples were collected after 96 h of rest pre- and post-training, and 5 min, 24 h, and 48 h after the second and last training sessions to measure serum cytokine levels by flow cytometry. The nutritional standard was accompanied throughout the study period with 24-h dietary recall. Increases in LM (35.937 +/- 4.926 to 39.130 +/- 4.950 kg) and decreases in FM (21.911 +/- 8.150 to 17.824 +/- 4.235 kg) and %FM (37.10 +/- 10.84 to 31.19 +/- 6.06), without concurrent changes in serum cytokine levels, and in the nutritional standard (alpha = 0.05). The proposed CRT improved body composition and did not induce any changes in serum cytokine levels characteristic of the inflammatory response in women.

The objective of this study is to evaluate the effect of interdisciplinary therapy in the parameters of the oxidative stress and the anti-inflammatory responses of obese adolescents. We selected 57 participants, who were randomly divided into 2 groups: interdisciplinary therapy group and a control group. After 6 months of intervention, 17 participants of the interdisciplinary therapy group and 8 of the control group returned for re-evaluation. The interdisciplinary therapy group participated in a treatment with 4 weekly sessions of exercise, a weekly group therapy session and a weekly nutritional education session. Blood parameters of oxidative stress and anti-inflammatory response were evaluated. The results demonstrated that there were significant increases in the interdisciplinary therapy group for superoxide dismutase activity (6.56 ± 3.22 to 11.40 ± 7.49) and ferric-reducing antioxidant potential concentration (532.91 ± 106.48 to 573.25 ± 112.57), although adiponectin levels did not reduce (40.9 ± 29.34 to 49.05 ± 41.22). A significant decrease in nitrite levels was also found (14.23 ± 8.48 to 11.45 ± 6.05). In the control group, significant reduction was found in adiponectin (31.56 ± 18.88 to 18.01 ± 11.66). This study suggests that interdisciplinary therapy for 6 months was effective in improving the anti-inflammatory responses and the antioxidant defences in obese adolescents.

Muscular strength is an important component for physical activity and performance of daily living activities. A phenomenon usually observed is that the capacity of generating maximum strength is compromised when the homologous extremities bilaterally contract. This phenomenon is called bilateral deficit. Thus, the aim of this work was to compare the electrical activity of the deltoid muscle, medial portion, during unilateral and bilateral contractions in a converging articulated military press machine, with 90% of maximum voluntary load (MVL), in nine men aged between 20 and 30 years, stature of 174 ± 5cm and body mass of 78 ± 15 kg. The myoelectrical signals were obtained through placement of differential active surface electrodes by EMG System of Brazil, a reference electrode (ground) and a signal conditioner module (electromyograph), which provided numerical data in RMS (root mean square) for results analysis. Each signal collected picked only the concentric phase of the movement and it had duration of three seconds. The results evidenced that during bilateral and unilateral exercise with 90% of MVL, the electric activity of the non-dominant extremity was significantly higher than in the dominant one (p = 0.018). When the values obtained in the work of dominant extremity are summed with the work of non-dominant extremity in the bilateral exercise (2.231 ± 504µv) and compared with the values obtained in the unilateral work (2.663 ± 701µv), bilateral deficit was found (p = 0.018). According to our study, it was verified that the bilateral deficit phenomenon is present in the medium deltoid muscle in the converging multiarticular military press exercise in individuals familiarized with resistance exercises.

Introdução: A obesidade tornou-se uma preocupação mundial. Estudos mostraram relação negativa entre a duração do sono e o Índice de Massa Corporal (IMC), adicionalmente, pesquisas revelam que a privação do sono está relacionada com a inadequação alimentar. Objetivos: Avaliar e relacionar a qualidade do sono, ingestão alimentar e percentual de gordura de adolescentes obesos. Métodos: A amostra foi composta por 41 adolescentes obesos. Foi realizada avaliação da composição corporal, ingestão alimentar por recordatório e análise do sono por questionários. Resultados: Foi observada alta prevalência de dietas hiperlipídicas (60,98%), além de má qualidade do sono (82,93%) e sonolência (56,10%). Além disso,a sonolência apresentou correlação positiva com massa corporal (r=0,327), com IMC (r=0,363) e ingestão hiperproteíca (r=0,343). A má qualidade do sono apresentou correlação com a massa corporal (r=0,336). Conclusão: Os sujeitos apresentaram importantes alterações no padrão de sono, possivelmente associada à ingestão exacerbada de nutrientes e a adiposidade.