Influence of Exercise Intensity on the Decision-Making Performance of Experienced and Inexperienced Soccer Players

2009 ◽  
Vol 31 (2) ◽  
pp. 135-151 ◽  
Author(s):  
Fabio E. Fontana ◽  
Oldemar Mazzardo ◽  
Comfort Mokgothu ◽  
Ovande Furtado ◽  
Jere D. Gallagher
Keyword(s):  
Decision Making ◽  
Exercise Intensity ◽  
Aerobic Power ◽  
Maximal Aerobic Power ◽  
Soccer Players

The aim of this study was to examine the decision-making performance of experienced and inexperienced soccer players at four exercise intensities (rest, 40%, 60%, and 80% maximal aerobic power). The decision-making performance of inexperienced players was expected to demonstrate an inverted-U shape with increasing levels of exercise. For the experienced players, decision making was predicted to show no change in performance with increased exercise intensity. Thirty-two adult soccer players (16 experienced, 16 inexperienced) were asked to answer seven decision-making questions as quickly and accurately as possible for each exercise intensity. Results indicated that exercise does not affect the accuracy of decision making; however, the speed of decision making for experienced and inexperienced players improved with increased exercise intensity. These results suggest that physiologically induced arousal only affects speed of decision making.

scholarly journals Maximal Aerobic Power Characteristics of Male Professional Soccer Players, 1989–2012

2013 ◽  
Vol 8 (3) ◽  
pp. 323-329 ◽  
Author(s):  
Espen Tønnessen ◽  
Erlend Hem ◽  
Svein Leirstein ◽  
Thomas Haugen ◽  
Stephen Seiler
Keyword(s):  
Aerobic Power ◽  
Maximal Aerobic Power ◽  
Performance Level ◽  
Soccer Players ◽  
Data Set ◽  
National Team ◽  
Power Characteristics ◽  
Professional Soccer ◽  
Over Time ◽  
Effect Magnitude

Purpose:The purpose of this investigation was to quantify maximal aerobic power (VO2max) in soccer as a function of performance level, position, age, and time of season. In addition, the authors examined the evolution of VO2max among professional players over a 23-y period.Methods:1545 male soccer players (22 ± 4 y, 76 ± 8 kg, 181 ± 6 cm) were tested for VO2max at the Norwegian Olympic Training Center between 1989 and 2012.Results:No differences in VO2max were observed among national-team players, 1st- and 2nd-division players, and juniors. Midfielders had higher VO2max than defenders, forwards, and goalkeepers (P < .05). Players <18 y of age had ~3% higher VO2max than 23- to 26-y-old players (P = .016). The players had 1.6% and 2.1% lower VO2max during off-season than preseason (P = .046) and in season (P = .021), respectively. Relative to body mass, VO2max among the professional players in this study has not improved over time. Professional players tested during 2006–2012 actually had 3.2% lower VO2max than those tested from 2000 to 2006 (P = .001).Conclusions:This study provides effect-magnitude estimates for the influence of performance level, player position, age, and season time on VO2max in men’s elite soccer. The findings from a robust data set indicate that VO2max values ~62–64 mL · kg−1 · min−1 fulfill the demands for aerobic capacity in men’s professional soccer and that VO2max is not a clearly distinguishing variable separating players of different standards.

Impaired left and right ventricular function following prolonged exercise in young athletes: influence of exercise intensity and responses to dobutamine stress

2010 ◽  
Vol 108 (1) ◽  
pp. 112-119 ◽  
Author(s):  
Laura Banks ◽  
Zion Sasson ◽  
Marco Busato ◽  
Jack M. Goodman
Keyword(s):  
Ejection Fraction ◽  
Right Ventricular ◽  
Strain Rate ◽  
Exercise Intensity ◽  
Prolonged Exercise ◽  
Aerobic Power ◽  
Dobutamine Stress ◽  
Maximal Aerobic Power ◽  
Hydration Status ◽  
Cardiac Fatigue

We examined the effect of intensity during prolonged exercise (PE) on left (LV) and right ventricular (RV) function. Subjects included 18 individuals (mean ± SE: age = 28.1 ± 1.1 yr, maximal aerobic power = 55.1 ± 1.6 ml · kg−1 · min−1), who performed 150 min of exercise at 60 and 80% maximal aerobic power on two separate occasions. Transthoracic echocardiography assessed systolic and diastolic performance, and blood sampling assessed hydration status and noradrenaline levels before (pre), during (15 and 150 min), and 60 min following (post) PE. β-Adrenergic sensitivity pre- and post-PE was assessed by dobutamine stress. High-intensity PE (15 vs. 150 min) induced reductions in LV ejection fraction (69.3 ± 1.3 vs. 63.5 ± 1.3%, P = 0.000), LV strain (−23.5 ± 0.6 vs. −22.3 ± 0.6%, P = 0.034), and RV strain (−26.3 ± 0.6 vs. −23.0 ± 0.6%, P < 0.01). Both exercise intensities induced diastolic reductions (pre vs. post) in the ratio of septal early wave of annular tissue velocities to late/atrial wave of annular tissue velocities (2.15 ± 0.15 vs. 1.62 ± 0.09; 2.21 ± 0.15 vs. 1.48 ± 0.10), ratio of lateral early wave of annular tissue velocities to late/atrial wave of annular tissue velocities (3.84 ± 0.42 vs. 2.49 ± 0.20; 3.56 ± 0.32 vs. 2.08 ± 0.18), ratio of early to late LV strain rate (2.42, ± 0.16 vs. 1.97 ± 0.13; 2.30 ± 0.15 vs. 1.81 ± 0.11), and ratio of early to late RV strain rate (2.03 ± 0.17 vs. 1.51 ± 0.09; 2.16 ± 0.16 vs. 1.44 ± 0.11) ( P < 0.001). Evidence of β-adrenergic sensitivity was supported by a decreased strain, strain rate, ejection fraction, and systolic pressure-volume ratio response to dobutamine ( P < 0.05) with elevated noradrenaline ( P < 0.01). PE-induced reductions in LV and RV systolic function were related to exercise intensity and β-adrenergic desensitization. The clinical significance of exercise-induced cardiac fatigue warrants further research.

Ventilatory and cardiac responses to hypoxia at submaximal exercise are independent of altitude and exercise intensity

2012 ◽  
Vol 112 (4) ◽  
pp. 566-570 ◽  
Author(s):  
François J. Lhuissier ◽  
Maxime Brumm ◽  
Didier Ramier ◽  
Jean-Paul Richalet
Keyword(s):  
Exercise Intensity ◽  
Aerobic Power ◽  
Arterial Oxygen Saturation ◽  
Submaximal Exercise ◽  
Maximal Aerobic Power ◽  
Arterial Oxygen ◽  
Simulated Altitude ◽  
Cardiac Responses ◽  
The Individual ◽  
Hypoxic Exercise

The hypoxic exercise test combining a 4,800-m simulated altitude and a cycloergometer exercise at 30% of normoxic maximal aerobic power (MAP) is used to evaluate the individual chemosensitivity to hypoxia in submaximal exercise conditions. This test allows the calculation of three main parameters: the decrease in arterial oxygen saturation induced by hypoxia at exercise (ΔSae) and the ventilatory (HVRe) and cardiac (HCRe) responses to hypoxia at exercise. The aim of this study was to determine the influence of altitude and exercise intensity on the values of ΔSae, HVRe, and HCRe. Nine subjects performed hypoxic tests at three simulated altitudes (3,000 m, 4,000 m, and 4,800 m) and three exercise intensities (20%, 30%, and 40% MAP). ΔSae increased with altitude and was higher for 40% MAP than for 20% or 30% ( P < 0.05). For a constant heart rate, the loss in power output induced by hypoxia, relative to ΔSae, was independent of altitude (4,000–4,800 m) and of exercise intensity. HVRe and HCRe were independent of altitude (3,000–4,800 m) and exercise intensity (20%-40% MAP). Moreover, the intraindividual variability of responses to hypoxia was lower during moderate exercise than at rest ( P < 0.05 to P < 0.001). Therefore, we suggest that HVRe and HCRe are invariant parameters that can be considered as intrinsic physiological characteristics of chemosensitivity to hypoxia.

The Assessment of Maximal Aerobic Power With the Multistage Fitness Test in Young Women Soccer Players

2010 ◽  
Vol 24 (6) ◽  
pp. 1488-1494 ◽  
Author(s):  
Carlo Castagna ◽  
Franco M Impellizzeri ◽  
Vincenzo Manzi ◽  
Massimiliano Ditroilo
Keyword(s):  
Young Women ◽  
Aerobic Power ◽  
Maximal Aerobic Power ◽  
Soccer Players ◽  
Fitness Test

Preseason Maximal Aerobic Power in Professional Soccer Players Among Different Divisions

2018 ◽  
Vol 32 (2) ◽  
pp. 356-363 ◽  
Author(s):  
Michaelides A. Marcos ◽  
Parpa M. Koulla ◽  
Zacharia I. Anthos
Keyword(s):  
Aerobic Power ◽  
Maximal Aerobic Power ◽  
Soccer Players ◽  
Professional Soccer
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