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Structure of Achievement Motivation Dispositions in Elite and Non-Elite Track and Field Athletes

. Psychology of Sport and Exercise, 9 , 352-372. DOI: 10.1016/j.psychsport.2007.05.002. Spray, C.M., Wang, C.K.J., Biddle, S.J.H., Chatzsisarantis, N.L.D. & Warburton, V.E. (2006). An experimental test of self-theories of ability in youth sport. Psychology of Sport and Exercise, 7, 255-267. DOI: 10.1016/j.psychsport.2005.05.001. Swann, C.F., Moran, A. & Piggott, D. (2015). Defining elite athletes: issues in the study of expert performance in sport psychology. Psychology of Sport and Exercise, 16 , 3-14. DOI: http://dx.doi.org/10.1016/j.psychsport.2014

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Balance, Basic Anthropometrics and Performance in Young Alpine Skiers; Longitudinal Analysis of the Associations During Two Competitive Seasons

0.97 denotes significance of p < 0.05 0.53 denotes significance of p < 0.05 0.98 denotes significance of p < 0.05 0.97 denotes significance of p < 0.05 0.45 denotes significance of p < 0.05 U16 BM (kg) 0.72 denotes significance of p < 0.05 0.82 denotes significance of p < 0.05 -0.58 denotes significance of p < 0.05 0.39 0.25 -0.82 denotes significance of p < 0.05 BH (cm) 0.61 denotes significance of p < 0.05 0.69 denotes significance of p < 0.05 -0.57 denotes significance of p < 0.05 0.10 0.14 -0

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Seeking Optimal Nutrition for Healthy Body Mass Reduction Among Former Athletes

were centrifuged at 3500 rpm for 10 min at 4°C within 2 h of collection. Plasma was then immediately stored under conditions to minimize artificial oxidation (i.e., with an antioxidant cocktail in an inert atmosphere). Standard blood biochemical analyses were carried out at the University Hospital Laboratory. Isolation of fatty acids and analysis of fatty acid esters Plasma was obtained from blood (taken at blood clot) by centrifugation for 10 min at 1200 G. Fatty acids were extracted with chloroform/methanol solution. About 0.5 ml of plasma was saponified with

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Effects of the off-Season Period on Field and Assistant Soccer Referees `Physical Performance

-AR (%) −10.53 −23.55 - - ES −0.31 −0.97 - - VO2 max (ml⋅kg −1 ⋅min −1 ) Total sample 50.09 ± 4.68 51.57 ± 4.04 p < 0.05 2.95 0.32 FR 50.78 ± 4.87 52.66 ± 3.94 p < 0.05 3.71 0.39 AR 49,26 ± 4,35 48.83 ± 2.95 p < 0.05 −0.88 −0.10 ΔFR-AR (%) −2.98 −7.27 - - ES −0.31 −0.97 - - Tympanic temperature Total sample 36.49 ± 0.81 35.55 ± 0.63 p < 0.01 −2.57 −1.16 - o $\overset{\text o}{\text -}$ C FR 36.58 ± 0.79 35.59 ± 0.60 p < 0.01 −2

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The Activity Profile of Young Tennis Athletes Playing on Clay and Hard Courts: Preliminary Data

significance level was set at p ≤ 0.05. Results The duration of the shortest match was 61.7 min, which was used as the standard to make the comparisons between the clay and hard court matches. Table 1 shows the comparison of distance covered, in the different velocity ranges, between the clay and hard court matches. The total distance covered and the distance covered at 0-5.5, 5.5-7, 7-10, and 10-15 km/h were most likely higher in clay court than hard court matches ( p ≤0.05). The distance covered at high-intensity (15-18 km/h) was likely higher on the clay

A Model for Determining the Effect of the Wind Velocity on 100 M Sprinting Performance

wind (sign -) and the coefficient l = c d ρA/2 . Taking c d =0.5 as the typical value of the drag coefficient ( Keller, 1973 ; Mureika, 2001 ), ρ= 1.2 kg/m 3 for the air density, and a cross section of A A = 1 m 2 ( Helene and Yamashita, 2010 ), we obtain l = 0.3 kg/m. Taking all the above into account, one can assume that the motion of a sprinter is performed under the action of the resulting Fs = F(t) - F v ± F w . m d v s d t = F ( t ) − k v s ± l w 2 $$ \displaystyle m\frac{dv_s}{dt}=F(t)\,-\,kv_s\,\pm\, lw^2 $$ (1) A rearrangement

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Effect of Two Different Types of Olympic Rotation Order on Cardiovascular and Metabolic Variables in Men’s Artistic Gymnastics

1 Participants’ characteristics. Gymnast Age (years) Body Mass (kg) Body Height (m) VO 2max (ml·min·kg -1 ) HR rest (b·min -1 ) HR max (b·min -1 ) BL a rest (mmol·l -1 ) BL a VO 2max (mmol·l -1 ) 1 24.25 70.79 1.71 54.64 62 198 2.90 12.70 2 22.45 63.15 1.68 58.05 64 197 1.80 12.10 3 21.52 66.07 1.64 48.63 63 198 1.90 11.80 4 18.47 68.59 1.60 50.88 61 203 2.03 12.30 5 18.33 59.21 1.58 49.03 60 207 2.16 11.70 6

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Effect of drop jump technique on the reactive strength index

differences at p < 0.05 30 RSI 0.91 ± 0.11 1.24 ± 0.24 0.33 ± 0.20 * significant differences at p < 0.05 RSI (amortization) 1.95 ± 0.27 2.75 ± 0.63 0.79 ± 0.52 * significant differences at p < 0.05 RSI (take-off) 1.72 ± 0.24 2.27 ± 0.43 0.55 ± 0.34 * significant differences at p < 0.05 contact time (s) 0.39 ± 0.06 0.23 ± 0.03 0.16 ± 0.07 * significant differences at p < 0.05 amortization time (s) 0.18 ± 0.03 0.10 ± 0.02 0.08 ± 0.03 * significant differences at p < 0.05 take-off time (s) 0.21 ± 0

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Effects of Plyometric Training and Beta-Alanine Supplementation on Maximal-Intensity Exercise and Endurance in Female Soccer Players

training by the rating of perceived exertion after each soccer training session. 747 ± 267 690 ± 299 690 ±179 Soccer experience (y) 9.1 ± 3.9 7.5 ± 3.1 8.0 ± 3.8 Competition games during the experimental period 4.4 ± 2.1 4.8 ± 1.8 4.0 ± 2.2 Weekly participation in other sport or training modalities (h) 1.1 ± 0.6 1.1 ± 0.5 1.0 ± 0.3 Energy intake (kcal·day -1 ) 2,737 ± 339 2,456 ± 348 2,426 ± 255    Carbohydrate intake (g·day -1 ) 424 ± 77.6 356 ± 67.4 344 ± 73.8    Lipid intake (g·day -1 ) 80

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Effects of Different Post-Activation Potentiation Warm-Ups on Repeated Sprint Ability in Soccer Players from Different Competitive Levels

speed (1 m/s) of movement (PAP-1) ( Gonzalez-Badillo et al., 2015 ) and the other with a load (~90% 1RM) ( Kilduff et al., 2008 ) that allowed a moderate speed (0.5 m/s) of movement (PAP-0.5). In both PAP-1 and PAP-0.5 athletes completed repetitions until mean propulsive concentric velocity was reduced by ≥10% for each corresponding speed ( Sanchez-Medina and Gonzalez-Badillo, 2011 ). After the warm-up, athletes rested passively for 5 minutes and then performed the RSA test ( Okuno et al., 2013 ). RSA test The RSA test included 6 sprints of 20 m, with a passive

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