Physical Fitness

To identify the physiological and anthropometric predictors of rhythmic gymnastics performance, which was defined from the total ranking score of each athlete in a national competition. Thirty-four rhythmic gymnasts were divided into 2 groups, elite (n = 15) and nonelite (n = 19), and they underwent a battery of anthropometric, physical fitness, and physiological measurements. The principal-components analysis extracted 6 components: anthropometric, flexibility, explosive strength, aerobic capacity, body dimensions, and anaerobic metabolism. These were used in a simultaneous multiple-regression procedure to determine which best explain the variance in rhythmic gymnastics performance. Based on the principal-component analysis, the anthropometric component explained 45% of the total variance, flexibility 12.1%, explosive strength 9.2%, aerobic capacity 7.4%, body dimensions 6.8%, and anaerobic metabolism 4.6%. Components of anthropometric (r = .50) and aerobic capacity (r = .49) were ...

Epidemiological, clinical and laboratory studies have yielded definitive evidence that physical activity is able to reduce the morbidity and mortality of cardiovascular diseases and to improve physical fitness and quality of life. Moreover, physical activ- ity seems to be capable of significantly reducing the risk of developing other chronic diseases, such as obesity, osteoporosis, diabetes, some neoplasms and depression. For

The purpose of this study was to analyse netball and volleyball players for differences in physical performance parameters among female university players. Materials and Methods: Twenty-eight female participants (14 netball + 14 volleyball players) participated in this study voluntarily. Any player with lower extremity musculoskeletal injury or a record since the last three months was excluded from the study. The average age of players was 19.54±0.69 years, body weight 52.99±10.51 kg., height 156.71±5.34 cm., and body mass index 21.57±4.09. Anthropometrical characteristics were measured with the help of a bioelectrical impedance analyser, while physical performance parameters (Muscular endurance, lower extremity power, dynamic stability, agility, speed) were determined by the numerous functional tests. Results: No statistically significant differences were found in physical performance parameters except agility (p=.041) and speed (p=.015) variables between netball and volleyball university female students. A significant positive relationship was also found in some of the physical performance parameters irrespective of the sports. Conclusion: The study's findings show that physical performance parameters do not differ significantly in female netball and volleyball players. Team coaches and physiologists must consider functional test outcomes while preparing players for competition. The individual training program should also be established on test outcomes, which is more likely to improve performance.

Purpose: One of the most widely applied methods to assess upper-body strength in children and adolescents is the handgrip strength test. While in adolescents it has been determined which elbow position, and which type of dynamometer are most appropriate for achieving the maximal grip strength, in children is still not clear. Therefore, the purpose of this study was to investigate whether elbow position and the type of dynamometer affect the handgrip strength in children. Material: Grip strength was measured by TKK and DynX dynamometers, and their validity and reliability were also analysed. A total of 60 children, 6 to 11 years old, participated in this study, and performed the handgrip strength test with their elbow extended and flexed at 90°. Results: While using the TKK dynamometer, grip strength was significantly higher when the test was performed with elbow extended, in contrast to those obtained with elbow flexed (14.58±3.04 kg vs 12.97±2.99 kg, p<0.001 for right, and 14.25...

Research has demonstrated that adolescents who actively commute have higher levels of physical activity (PA), which have declined precipitously over the past 30 years. The purpose of this study was to describe the prevalence of active commuting to school; and to identify barriers associated with active commuting. A cross-sectional study was conducted with 1672 students (46.8% boys and 53.2% girls) from 11 to 17 years of age in Caxias do Sul/RS, Brazil. The students were asked to answer questionnaires about active transport, PA, and sedentary behaviors. They also completed a cardiovascular fitness test and body composition measurements. The study used a multivariate Poisson regression analysis. A total of 62.5% of students were observed to actively commute and the prevalence ratio (PR) of not actively commuting was associated with the type of school (Private: 2.41; 1.47, 3.95) and the time spent on commuting (>20 min: 1.93; 1.23, 3.03). The associated barriers to passive commuting...

In the Aviation Field, safety is important and numerous steps had been taken to alleviate safety or retain it. The graduates from aviation institutions were trained to be efficient, skillful, and knowledgeable so that mistakes during jobs could be minimized or maintained at zero. In order for these graduates to have those characteristics, their lecturers or academicians should be at their bests in order to train these graduate efficiently. Being at their bests require the lecturers to be fit and healthy. We had investigated the health and fitness of these academicians and the results varies.

Despite the recommendation that physical exercise is an important way to maintain health, few people maintain fitness levels throughout their lifetime and realize their full fitness potential. In a recent Commonwealth of Australia census, it "~>vas found that 34.8% of men aged 65- 74 years
did not exercise, 26.6% did only low levels of exercise, 17.5% did medium levels of exercise, and 21 .1% did high levels of exercise, compared with 15.5% who did high levels of exercise in the 55- 64 year age group.'
The statistics for men aged 45- 54 years were even more alarming, with only 12.9% doing regular high levels of exercise.

Wheelchair users with spinal cord injury generally have a relatively inactive lifestyle. Several studies have shown that an inactive lifestyle is associated with a lower fitness level, poorer health, reduced social participation and a lower quality of life for wheelchair users. There are a number of ways in which wheelchair users can remain active in daily life, for instance, by using a wheelchair or handbike for mobility instead of taking the car, and by participating in sports or wheelchair sports. Some prerequisites should be met to enable wheelchair users to have a more active lifestyle: the wheelchair should be optimally adjusted and the everyday environment, including sport facilities, should be easily accessible. An active lifestyle often also requires a change in attitude or behaviour. General practitioners, other primary healthcare providers and rehabilitation professionals can help in this respect.

The aim of this study was to evaluate the effects of integrative neuromuscular training (INT) during physical education (PE) class on selected measures of health- and skill-related fitness in children. Forty children from two 2nd grade PE classes were cluster randomized into either an INT group (n = 21) or a control (CON) group (n = 19). INT was performed 2×/wk during the first ~15 min of each PE class and consisted of body weight exercises. INT and CON participants were assessed for health- and skill-related fitness before and after 8 wks of PE with or without INT, respectively. A significant interaction of group by time was observed in INT participants with improvements noted in push-ups, curl-ups, long jump, single leg hop, and 0.5 mile (0.8 km) run performance (p < .05). These data indicate that INT is an effective and time-efficient addition to PE as evidenced by improvements in health- and skill-related fitness measures in children.

Purpose:This study examined the effects of a five-week intervention combining vigorous interval training (VIT) with diet among twenty-four obese adolescents. Fourteen girls and ten boys (aged 14–15) schooled in a pediatric rehabilitation center participated. Methods:The VIT intensity was targeted and remained above 80% of maximal heart rate (HR) and over six kilocalories per minute. Pre- and postintervention measures were body composition (BMI, weight, body fat percentage), physical self-perceptions (PSP), physical fitness (6-min walking distance and work) and its associated physiological responses (HRpeak and blood lactate concentration). A series of two-way analyses of variance or covariance controlling for weight loss were used to examine the changes. Results:Significant improvements were found in body composition, physical fitness and PSP (endurance, activity level, sport competence, global physical self-concept and appearance). In addition, boys presented higher levels of perce...

This study evaluated the validity, reliability, and sensitivity of the single-trial line drill test (SLDT) for anaerobic power assessment. Twenty-four volunteers were assigned to either a control (C, N.=12) or an experimental (BP, N.=12 basketball players) group. SLDT's (time-to-complete) concurrent validity was evaluated against the Wingate testing (WAnT: mean [MP] and peak power [PP]) and a 30-sec vertical jump testing test (VJT: mean height and MP). Blood lactate concentration was measured at rest and immediately post-test. SLDT's reliability [test-retest intraclass correlation coefficients (ICC), coefficient of variation (CV), Bland-Altman plots] and sensitivity were determined (one-way ANOVA). Kendall's tau correlation analysis revealed correlations (P<0.05) between SLDT time and WAnT's PP (=0.78) and MP (=0.56) and VJT's MP (=0.85) and height (=0.90). SLDT lactate concentration was moderately (P<0.05) correlated with the respective lactate values of W...

Objective: This study investigates the relative performance quality pattern
of athletes that trains under Terengganu sports development program
based on physical fitness and psychological components. Methods: Relative
performance data (223×7) were obtained from various types of sport, and
its main tributaries were evaluated for physical fitness and TEOSQ instrument. Multivariate methods of hierarchical agglomerative cluster analysis
(HACA), discriminant analysis (DA), principal component analysis (PCA),
and principal factor analysis (PFA), were used to study the relative performance variations of the most significant performance quality variables
and to determine the origin of relative performance components. Results:
Three clusters of performance were shaped in view of HACA. Forward
and backward stepwise DA discriminates six and five performance quality
variables from the first seven variables. PCA and FA were used to identify
the origin of each quality performance variables based on three clustered
groups. Three PCs were obtained with 67% total variation for the highperformance group (HPG) region, three PCs with 72% and 64% total
variances were obtained for the moderate-performance group (MPG) and
low-performance group (LPG) regions, respectively. The general performance sources for the three groups are from cardiovascular and ego orientation sources. The differences between groups are from flexibility for LPG,
task orientation, muscle strength and endurance for MPG and for HPG is
flexibility, strength and task orientation. Conclusion: Multivariate methods
reveal meaningful information on the relative performance variability of a
large and complex athlete’s performance quality data and can be used to
determine the significant source and predict potential athletes.

The purpose of this study was to determine the efficacy of rate of perceived exertion (RPE) to monitor exercise intensity in older adults. Middle-aged (46.9 +/- 7.0 years, n = 24) and older women (75.5 +/- 3.8 years, n = 29) performed a graded maximal exercise test on a cycle ergometer while RPE, oxygen uptake, heart rate, and blood lactate levels were measured. The Pearson's product moment correlation coefficient between RPE and oxygen uptake for each stage of the graded exercise test was calculated for each participant. The mean coefficient for the older group (r =.954) was similar to that of middle-aged group (r =.963). The autocorrelation coefficient was much lower (r =.411) in the older group than in the middle-aged group (r =.871). Variability in RPE through the graded exercise test was similar between the two groups. In conclusion, RPE was strongly associated with oxygen uptake in the older group. These results indicate that RPE is effective in monitoring exercise intensi...

Vascular endothelial growth factor receptor 2 (VEGFR2) is essential to induce the full spectrum of VEGF angiogenic responses to aerobic training. In the present study, we examined the impact of the functional His472Gln polymorphism of the VEGFR2 gene on elite athlete status, endurance performance and muscle fibre type composition. Four hundred and seventy-one Russian athletes were prospectively stratified into four groups according to event duration, distance and type of activity, covering a spectrum from the more endurance-oriented to the more power-oriented. VEGFR2 genotype and allele frequencies were compared to 603 controls. To examine the association between VEGFR2 genotype and fibre type composition, vastus lateralis muscle biopsies were obtained from 45 physically active healthy men and 23 all-round speed skaters. In addition, 76 competitive rowers performed incremental endurance exercise to allow analysis of genotype associations with exercise responses. We found that the frequency of the VEGFR2 472Gln allele was significantly higher in endurance-oriented athletes compared to controls (36.8 vs. 27.4%, P = 0.0006). Relative VO2max was significantly greater in the VEGFR2 472Gln allele carriers compared with the His/His homozygotes of the sub-elite female rower group only. Genotype-specific differences were found for the proportion of slow-twitch fibres in both athletes and controls, which was ~10.1 and ~7.4% higher in the His/Gln and Gln/Gln genotypes than in the His/His genotype group, respectively. In conclusion, we have shown for the first time that variation in the VEGFR2 gene is associated with elite athlete status, endurance performance of female rowers and muscle fibre type composition.