Time filter

Source Type

Bordalo M.F.,Pará State University | De Nazare Portal M.,University of Trás os Montes e Alto Douro | Cader S.,Federal University of Rio de Janeiro | Perrotta N.V.A.,Laboratorio Of Biociencia Da Motricidade Humana | And 2 more authors.
Journal of Sports Medicine and Physical Fitness | Year: 2015

Aim: The present study aimed to assess the effects of two different sports training methods - traditional and maturational - on the flexibility of female rhythmic gymnasts at different levels of biological maturation. Methods: The sample consisted of 120 children, randomly divided (by draw) into six groups of 20 children (eight and nine-years old): traditional training group (TG); maturational training group (MG); and the control group (CG). These were subdivided into early, normal and late, based on biological maturation assessment by hand/wrist X-ray examination. Flexibility was evaluated by angle goniometer testing, applying the LABIFIE protocol. A Lafayette Goniometer Set and Hoorn-Brasil exercise mat were used and the following exercises were performed: external shoulder rotation (ESR) and lumbar lexion (LF). Both the TG and MG participated in twice-weekly, 45-minute rhythmic gymnastics classes over 16 weeks. The TG used the traditional sports training method while the MG executed sporting activities according to biological maturation. The CG received no special treatment. Results: The results showed a significant improvement (P<0.001) in the subgroups (late, normal and early) for both variables (ΔESR=7.54° and ΔLF=7.51°) in the eight and nineyear age groups. Moreover, in relation to division by biological maturity, better results were recorded in the early subgroups. Conclusion: Thus, it can be inferred that, due to the changes in important physical parameters as a result of maturation, selecting children for physical education should not be based solely on chronological, but primarily on biological maturation.

De Almeida O.V.,Santa Rita College FASAR Conselheiro Lafaiete | De Almeida O.V.,Laboratory of Human Kinetics Science | De Oliveira Sampaio A.,Laboratory of Human Kinetics Science | De Oliveira Sampaio A.,Nuestra Senora Del Asuncion Catholic University | And 7 more authors.
Journal of Medical Biochemistry | Year: 2010

The objective of this study was to evaluate variation in the lumbar spine extension (LSE) muscular strength index and the hydroxyproline (HP) urinary concentrations as a function of flexibility training with maximum intensity (flexibilizing) statically, by proprioceptive neuromuscular facilitation (PNF) and submaximally. The sample population - with an age of 17.13 ± 1.23; body mass of 63.23 ± 6.36 kg; height of 173.62 ± 5.465 cm and body fat percentage of 10 ± 3.62% - comprised 60 male individuals divided randomly into four equal groups: CG (control), StrG (stretching), SFG (static flexibilizing) and PNFG (flexibilizing by PNF). The statistical program SPSS 14.0 for Windows was used to perform a Shapiro Wilk test to verify the normality of the data and Levene's test to analyze the homogeneity of the sample, repeated measures ANOVA for multiple comparisons among groups and the Tukey's HSD Post Hoc test to determine the statistical difference within groups of the variables. A significance level of 95% (p<0.05) was adopted. The results showed a significant difference in LSE between PNFG and CG (D% = 11%; p = 0.029). It can be concluded that the practice of PNF increased strength in the study group.

Lima R.,Castelo Branco University | Rosa G.,Laboratory of Human Kinetics Science | de Mello D.B.,Laboratory of Human Kinetics Science | Albergaria M.,Estácio de Sá University | Filho J.F.,Estácio de Sá University
International SportMed Journal | Year: 2011

Objective: To analyse the level of aerobic fitness of female surfers ranked as elite athletes through cardiovascular and body composition indicators. Design: The research was descriptive. The study included 7 elite female surfers within the top 10 rankings in Brazil, who lived in Rio de Janeiro City, Brazil. To determine the anthropometric characteristics of the sample, measurements of body mass, height and body fat percentage were taken based on the 3-site skin fold test by Jackson and Pollock. Cardiorespiratory fitness was analysed by means of the Bruce Protocol Treadmill Test using an Imbramed®. During all tests, the following variables were monitored: heart rate, systolic blood pressure (BPS), diastolic blood pressure (BPD) and subjective perceived exertion. The variables were measured before and after the test. Using these variables, we calculated the aerobic functional impairment 1, oxygen consumption by age and gender (VO2_P) and the Rate Pressure Product (RPP). Descriptive statistics were used. The Shapiro Wilk test was used to verify the normality of the data, and Levine's test was used to analyse the homogeneity of the sample. Results: BMI was classified as normal, and the body fat percentage (10.00 ± 3.62) corresponded to a low fat rate. Although the sample subjects were athletes, they presented a waist-to-hip ratio (WHR) mean of 0.75m ± 0.03. A low HR (63±8.72bpm) was observed at rest, and pre-test systolic and diastolic blood pressure values were normal according to the American Heart Association Guidelines. The evaluated group had excellent physical conditioning. The VO2max (46.39±12.01ml O2/kg/min) was 40% greater than the expected value and was classified as excellent for women 30-39 years old, according to the American Heart Association. The RPP of the sample (30.188.33 ± 5.936.24 mmHg.bpm) was between effort reference values. Conclusions: The present authors concluded that elite female surfers have excellent aerobic fitness and body composition, indicating that the top 10 ranking female surfers in Brazil possess good physical fitness.

Loading Laboratory of Human Kinetics Science collaborators
Loading Laboratory of Human Kinetics Science collaborators