• Allometric associations between body size, shape, and 100-m butterfly speed performance

      Sammoud, Senda; Nevill, Alan M.; Negra, Yassine; Bouguezzi, Raja; Chaabene, Helmi; Hachana, Younés (Edizioni Minerva Medica, 2017-05-09)
      This study aimed to estimate the optimal body size, limb--segment length, and girth or breadth ratios associated with 100--m butterfly speed performance in swimmers.
    • Body size and shape characteristics for Cooper's 12 minutes run test in 11-13 years old Caucasian children: An allometric approach

      Giuriato, M; Nevill, A; Kawczynski, A; Lovecchio, N; University School of Physical Education, Faculty of Sport Science, Wroklaw, Poland - matteogiuriato1@gmail.com. (Edizioni Minerva Medica, 2020-03-20)
      © 2019 EDIZIONI MINERVA MEDICA. BACKGROUND: The Cooper Test, is a field test, simple and useful in the school context. The aim of this research was the definition of the trend in Cooper endurance test along with the growth. In particular, through the scaling method (allometric). METHODS: Atotal of 556 of European sedentary children aged 11-13 years (282 boys; 274 girls) were involved. All subjects were evaluated through the Endurance Cooper test (12 min run test). To identify the most appropriate body size and shape characteristics as well as any categorical differences (sex, age) associated with the measure of the Cooper test, a multiplicative model with allometric body-size components was applied. RESULTS: The multiplicative model relating to the Cooper test and the body-size components was: Cooper test = a mass-0.325 · height0.878 with the mass and height exponents being k1=-0.325 (SEE=0.40) and k2= 0.878 (SEE=0.141), respectively. The adjusted coefficient of determination (adj R2) was 32.3%, with a log-transformed error ratio of 0.136 or 14.5% having taken antilogs. Significant differences in the constant 'a' parameter were identified by sex (P<0.001) and age (P<0.001) while the interaction of sex per age was not significant (P=0.761). CONCLUSIONS: The results suggested that the scaling method identified the optimal height-to-body mass ratios associated with Cooper endurance test corresponding to ectomorph body shape. Furthermore, growth fluctuations become important to avoid alarming judgment in case children will be poorly evaluated.
    • Contribution of muscular strength in cardiorespiratory fitness tests.

      Flouris, Andreas D.; Metsios, Giorgos S.; Koutedakis, Yiannis (Edizioni Minerva Medica, 2006)
      Reports from laboratory-based studies have revealed a relationship between resistance training and endurance performance in both trained and untrained individuals. The purpose of the present study was to investigate the contribution of lower extremity muscular strength levels in performing cardiorespiratory fitness tests in laboratory, as well as field-based settings. Within 2 weeks 38 healthy males (age 21.6±2.5 years, body mass index-BMI-24.4±2.2) performed three maximal oxygen uptake (VO^sub 2max^) assessments using the 20 m multistage shuttle run test (MSR), the 20 m square shuttle run test (SSR), and a maximal treadmill test (MT) to exhaustion. Data were also obtained from knee flexion and extension isokinetic dynamometry at 60^sub °0·s-1^. MSR performance correlated with the peak torque generated from both legs at r=0.63 (P<0.001 ). The equivalent for SSR was significant at r=0.44 (P<0.05), while MT demonstrated a non-significant positive correlation coefficient (r=0.34, P>0.05). Stepwise regression analyses revealed that the inclusion of leg strength parameters increased the coefficient of determination by 9% (P<0.001) and 4% (P<0.05) in the MSR and SSR, respectively. The MT model was not significantly associated with any of the isokinetic indices studied. Although moderately significant, the present coefficients suggest that performance in the present field-based cardiorespiratory fitness tasks is affected to a certain extent by lower extremity muscular strength. The latter also demonstrates a positive relationship with laboratory-based performance.
    • Physical fitness profile in elite beach handball players of different age categories

      Lemos, LF; Oliveira, VC; Duncan, MJ; Ortega, JP; Martins, CM; Ramirez-Campillo, R; Sanchez, JS; Nevill, AM; Nakamura, FY; Associate Graduate Program in Physical Education UPE/UFPB, João Pessoa, Brazil - luis.training75@gmail.com. (Edizioni Minerva Medica, 2020-06-30)
      BACKGROUND: The aims of this study were to compare anthropometric and fitness variables of high-level beach handball players across under-19 (u-19), under-21 (u-21) and senior male categories, and between male and female senior players; and to test the correlations among those measures. MeThodS: a total of 70 high-level players (53 male of different ages) were evaluated for 5-m acceleration, 15-m sprint, horizontal jump, handgrip strength, specific beach handball throwing velocities, and anthropometric variables. Differences between age groups were tested using anoVa. independent t-test was used to compare fitness variables between male and female elite athletes, and Pearson partial correlation coefficients were calculated between each of the fitness variables using BMI and age as covariates. SPSS Software was used, and the level of significance was set at 95%. reSulTS: The u-21 athletes better performed on horizontal jump and 6-m throw than the u-19 athletes. Senior athletes showed better performance on horizontal jump than U-19 athletes (P≤0.05). Positive correlation was seen for handgrip on dominant and non-dominant hands and 6-m throwing speed, and for handgrip on dominant hand and inflight velocity (P≤0.05). Negative correlations were observed between horizontal jump and 5-m acceleration, and 15-m sprint (P≤0.01 and P≤0.05, respectively). CONCLUSIONS: Male athletes better performed than women in all the fitness tests. The study, for the first time, showed physical fitness comparisons between beach handball elite male athletes of different ages and between genders. These are key steps for coaches and athletes and may support future beach handball studies and practice.