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  • Author: Carlos da Silva x
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The Contribution of Sport as a Means of Inclusion in Discussions of Sustainable Development for Visually Disabled People

The Contribution of Sport as a Means of Inclusion in Discussions of Sustainable Development for Visually Disabled People

This study investigated how high-performance sport improved the quality of life and facilitated the inclusion of blind athletes in discussions about sustainable development at the Benjamin Constant Institute. It was also revealed that the blind still face discrimination, and that society associates the blind's visual disabilities with their other characteristics.

Open access
Hydroxyproline Levels in Young Adults Undergoing Muscular Stretching and Neural Mobilization

Hydroxyproline Levels in Young Adults Undergoing Muscular Stretching and Neural Mobilization

This study aimed to assess the acute effect of stretching and neural mobilization on urinary hydroxyproline (HP) levels in young adults. The sample, composed of physical therapy students from Teresina (PI), was divided into three groups: a neural mobilization group (NMG; n=15; age=22±3 years; BMI=24.75±3.09); a static stretching group (SSG; n=15; age=23±4 years; BMI: 25±4.33) and a control group (CG; n=15; age: 24±4 years; BMI: 23.91±3.09). The NMG underwent neural mobilization of the sciatic nerve while engaged in hip flexion with knee extension in a direct, oscillatory and strenuous manner for 60 seconds. The SSG performed passive static stretching, which consisted of the maintenance of a high amplitude posture, without exceeding the limits of the movement, for a period of tension ranging from four to six seconds. Urinary HP was evaluated at the baseline and 24 hours after the intervention using the colorimetric method. Repeated measures ANOVA showed significant intragroup increases in the NMG (Δ7.38 mg/24h; p=0.0001) and the SSG (Δ=3.47 mg/24h; p=0.002) and inter-group increases in the NMG (Δ%=118.89%) when compared to the SSG (Δ%=60.32%; p=0.006) and the CG (Δ%=-0.91%; p=0.0001). These results indicate that the NMG worked with tension beyond the ordinary amplitude arches of articular movement, thus causing a restructuring of collagen.

Open access
Is Long Term Creatine and Glutamine Supplementation Effective in Enhancing Physical Performance of Military Police Officers?

Abstract

The objective of this study was to analyze the effect of supplementation with creatine and glutamine on physical fitness of military police officers. Therefore, an experimental double blind study was developed, with the final sample composed by 32 men randomly distributed into three groups: a group supplemented with creatine (n=10), glutamine (n=10) and a placebo group (n=12) and evaluated in three distinct moments, in an interval of three months (T1, T2 and T3). The physical training had a weekly frequency of 5 sessions x 90 min, including strength exercises, local muscular resistance, flexibility and both aerobic and anaerobic capacity. After analyzing the effect of time, group and interaction (group x time) for measures that indicated the physical capabilities of the subjects, a significant effect of time for the entire variable was identified (p<0,05). However, these differences were not observed when the univaried intragroups and intergroups analysis was performed (p>0,05). In face of the results it was concluded that supplementation with creatine and glutamine showed no ergogenic effect on physical performance in military police officers.

Open access
Tissue disinfection for preparation of Dendrobium in vitro culture

Abstract

Establishing an aseptic in vitro culture for Dendrobium, or for any plant in fact, is the most important step towards developing an effective in vitro tissue culture including micropropagation protocol. Success in initial aseptic culture will contribute to the successful production of in vitro cultures that may involve the initiation or formation of callus and/or protocorm-like bodies (PLBs), the induction, regeneration or multiplication of shoots, and the preparation and proliferation of plantlets suitable for acclimatization. The initiation of an aseptic culture is closely related to the appropriate selection of an explant source and its preparation, including its (in vivo) pre-treatment if necessary and subsequent disinfection procedures. Care in the choice of explant and the application of an appropriate disinfection protocol can successfully reduce, or eliminate, contamination in in vitro cultures while reducing the negative impact on plant tissues and plantlet regeneration. Many unique aseptic culture procedures for Dendrobium genus have been reported in the literature, very often specific to particular tissues or genotypes, and this review not only highlights the details of such protocols, but also provides practical advice for novice – and even seasoned – orchidologists who wish to research Dendrobium in vitro, although it is cautioned that there is currently no universal aseptic culture procedure that can be applied to all conditions, all explants or all genotypes.

Open access