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1
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Assessing the Importance Given by Basketball Coaches to Training Contents

100%
Leite N., Coelho E., Sampaio J.
Journal of Human Kinetics
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2011
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vol. 30
123-133
EN
The purpose of this study was to compare the importance given by novice, intermediate and experienced basketball coaches to training contents. To achieve this purpose, a sample composed of Portuguese basketball coaches (n = 212) described how they rate the importance of technical, tactical, physical and drill contents. According to the results, there is a wide-ranging differential from novice to experienced coaches. First, while experienced coaches tend to focus on tactical development, novice and intermediate coaches seem to privilege the improvement of technical skills. Second, whereas significant differences between novice and intermediate coaches were found, evidence confirmed that they were higher (both in number and weight) when comparing experienced coaches against novice and intermediate. The study provided strong support to justify the necessity to adjust coaches' knowledge to players' biological developmental, and could form the basis of focused interventions in coaching development.
2
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Differences in Maximum Upper and Lower Limb Strength in Older Adults After a 12 Week Intense Resistance Training Program

100%
Sousa N., Mendes R., Abrantes C., Sampaio J.
Journal of Human Kinetics
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2011
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vol. 30
183-188
EN
The purpose of this study was to identify differences in maximum strength after an intense strength training program, contrasting muscle groups from upper limbs versus lower limbs. The sample consisted of 10 healthy elderly males (age 73±6 years) with independent living. The training program lasted 12 weeks (3 × week, 50 to 80% of 1RM, 2-3 sets, 6 to 12 repetitions). Two muscle groups were analyzed: LOWER (sum of average values of three exercises for the lower limbs) and UPPER (sum of average values of four exercises for the upper limbs). Measurement of 1RM was performed at intervals of 4 weeks by direct methods. Repeated measures ANOVA identified significant differences in muscle groups (F=8.1, p=0.006), time (F=730.0 p=0.000) and also their interaction (F=4.4, p=0.014). The gains in 1RM values were higher for upper limbs. These results may suggest that the muscles of the lower limbs are elicited more frequently and therefore, have a smaller potential to gain strength at older age. The muscles of the upper limbs are in accelerated muscle atrophy and their trainability is probably higher.
3
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Ball Possession Effectiveness in Men’s Elite Floorball According to Quality of Opposition and Game Period

100%
Gómez M.-Á., Prieto M., Pérez J., Sampaio J.
Journal of Human Kinetics
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2013
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vol. 38
227-237
EN
The aim of the present study was to identify the importance of floorball tactical variables to predict ball possession effectiveness, when controlling quality of opposition and game periods. The sample was composed by 1500 ball possessions, corresponding to 14 games randomly selected from the International Championships played during 2008 and 2010 (World Championship, Four nations tournament and classificatory phases for World Championship) by teams from different competition levels (HIGH, INTERMEDIATE and LOW). The effects of the predictor variables on successful ball possessions according to the three game contexts (HIGH vs. HIGH; HIGH vs. LOW; LOW vs. LOW games) were analyzed using Binomial Logistic Regressions. The results showed no interaction with the game period. In HIGH vs. HIGH games, quality of opposition showed an association with ball possession effectiveness with ending zone, offensive system, possession duration, height of shooting and defensive pressures previous to the shot. In HIGH vs. LOW games the important factors were the starting zone, possession duration, defensive pressure previous to the last pass and to the shot, technique of shooting and the number players involved in each ball possession. Finally, in LOW vs. LOW games, the results emphasized the importance of starting and ending zones, the number of passes used and the technique of shooting. In conclusion, elite floorball performance is mainly affected by quality of opposition showing different game patterns in each context that should be considered by coaches when preparing practices and competitions.
4
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The Importance of Sports Performance Factors and Training Contents From the Perspective of Futsal Coaches

100%
Serrano J., Shahidian S., Sampaio J., Leite N.
Journal of Human Kinetics
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2013
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vol. 38
151-160
EN
The aim of this study was to identify the importance assigned by futsal coaches with different education levels to the sports performance factors (technical, tactical, physical and psychological) and to the training contents. The sample was divided into three groups (novice: n=35, intermediate: n=42; and elite coaches: n=15) depending on the degree of specific education, coaching experience and the level of the teams trained. To achieve this goal, the coaches answered a questionnaire previously validated by specialists in sport sciences. The results showed significant differences between the novice and elite group in small-sided games, inferiority games, opposition and execution timing of the training and drill items. The analyses also showed significant differences between the novice and intermediate group in inferiority games and opposition of the training and drill items. Although, no differences were identified between groups for the remaining performance factors and training and drill items considered, the identified trends provide a baseline related to the knowledge that contributes to the development of expertise of futsal coaches.
5
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Effect of a Short Time Concentric Versus Eccentric Training Program on Electromyography Activity and Peak Torque of Quadriceps

88%
Carvalho A., Caserotti P., Carvalho C., Abade E., Sampaio J.
Journal of Human Kinetics
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2014
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vol. 41
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issue 1
5-13
EN
The purpose of this study was to examine the effect of an 8-week concentric (CON) versus eccentric (ECC) isokinetic training program on the electromyography (EMG) signal amplitude of vastus medialis (VM), vastus lateralis (VL) and rectus femoris (RF). Also, the isometric (ISO) and dynamic maximum strength of the knee extensors were assessed. Eighteen physically healthy male subjects (age 22 ± 1 years, body height 177 ± 4 cm, body mass 73 ± 7 kg) performed four weeks of unilateral CON isokinetic training for the quadriceps of the dominant leg on a REV9000 dynamometer. At the end of the fourth week, the sample was divided into two groups, with one group performing additional four weeks of unilateral ECC training and the other continuing with CON training. The training sessions consisted of three sets of ten maximal repetitions at a velocity of 60°s-1, three days per week for eight weeks. The results showed that CON and ECC groups improved the peak torque in all types of contractions. Also, both groups presented increases in the avgEMG for VL, VM and RF. The present investigation showed that CON training elicited increases of the ISO peak torque and VM avgEMG in the CON contraction. Additionally, significant gains were reported after the ECC training on the VM avgEMG in all contractions and RM avgEMG in CON contraction.
6
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Identifying Basketball Performance Indicators in Regular Season and Playoff Games

88%
García J., Ibáñez S. J., Martinez De Santos R., Leite N., Sampaio J.
Journal of Human Kinetics
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2013
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vol. 36
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issue 1
161-168
EN
The aim of the present study was to identify basketball game performance indicators which best discriminate winners and losers in regular season and playoffs. The sample used was composed by 323 games of ACB Spanish Basketball League from the regular season (n=306) and from the playoffs (n=17). A previous cluster analysis allowed splitting the sample in balanced (equal or below 12 points), unbalanced (between 13 and 28 points) and very unbalanced games (above 28 points). A discriminant analysis was used to identify the performance indicators either in regular season and playoff games. In regular season games, the winning teams dominated in assists, defensive rebounds, successful 2 and 3-point field-goals. However, in playoff games the winning teams’ superiority was only in defensive rebounding. In practical applications, these results may help the coaches to accurately design training programs to reflect the importance of having different offensive set plays and also have specific conditioning programs to prepare for defensive rebounding.
7
Content available remote

A Review on the Effects of Soccer Small-Sided Games

88%
Aguiar M., Botelho G., Lago C., Maças V., Sampaio J.
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EN
Over the last years there has been a substantial growth in research related to specific training methods in soccer with a strong emphasis on the effects of small-sided games. The increase of research in this topic is coincident with the increase of popularity obtained by specific soccer conditioning, which involves training players to deal with soccer match situations. Given the limited time available for fitness training in soccer, the effectiveness of small-sided games as a conditioning stimulus needs to be optimized to allow players to compete at the highest level. Available studies indicate that physiological responses (e.g. heart rate, blood lactate concentration and rating of perceived exertion), tactical and technical skill requirements can be modified during small-sided games by altering factors such as the number of players, the size of the pitch, the rules of the game, and coach encouragement. However, because of the lack of consistency in small-sided games design, player fitness, age, ability, level of coach encouragement, and playing rules in each of these studies, it is difficult to make accurate conclusions on the influence of each of these factors separately.
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