Results found: 3

Number of results on page

Search results

Sort By:

Limit search:

Short-Term Performance Effects of Three Different Low-Volume Strength-Training Programmes in College Male Soccer Players

100%

Brito J., Vasconcellos F., Oliveira J., Krustrup P., Rebelo A.

Journal of Human Kinetics

2014

vol. 40

issue 1

121-128

This study aimed to analyse the short-term performance effects of three in-season low-volume strength-training programmes in college male soccer players. Fifty-seven male college soccer players (age: 20.3 [...] 1.6 years) were randomly assigned to a resistance-training group (n=12), plyometric training group (n=12), complex training group (n=12), or a control group (n=21). In the mid-season, players underwent a 9-week strength-training programme, with two 20 min training sessions per week. Short-term effects on strength, sprint, agility, and vertical jump abilities were measured. All training groups increased 1-RM squat (range, 17.2-24.2%), plantar flexion (29.1-39.6%), and knee extension (0.5- 22.2%) strength compared with the control group (p<0.05). The resistance-training group increased concentric peak torque of the knee extensor muscles by 9.9-13.7%, and changes were greater compared with the control group (p<0.05). The complex training group presented major increments (11.7%) in eccentric peak torque of the knee flexor muscles on the non-dominant limb compared with the control group and plyometric training group (p<0.05). All training groups improved 20-m sprint performance by 4.6-6.2% (p<0.001) compared with the control group. No differences were observed in 5-m sprint and agility performances (p>0.05). Overall, the results suggest that in-season low-volume strength training is adequate for developing strength and speed in soccer players.

The Vertical Jump Height of Soccer Players after Static Overstretching

100%

Vasconcellos F., De Salles P., Junior A., De Mello D., Dantas E.

Human Movement

2012

vol. 13

issue 1

4-7

Purpose. The purpose of this study was to assess the effect of static overstretching on performing a vertical jump. Methods. A methodological model was used, using descriptive and comparative methods on 45 randomly selected under-15-year-old male soccer players. Three jump test measurements were taken over a period of several days, where the first measurement included a pre-test in order to familiarize the athletes with using a contact mat, where maximum vertical jump height was recorded as a control. The second measurement had the athletes perform a vertical jump after static overstretching of the lower limbs. The third test had the athletes perform another vertical jump with no overstretching as another control. Results. The results found a significant difference in vertical jump heights (Δ% = 34.1%, p < 0.05), with jumps performed after static overstretching to be much lower. Conclusions. The usage of such a static overstretching method negatively influences the vertical jump within the tested group of under-15 male soccer players.

Validity and Reproducibility of the Sargent Jump Test in the Assessment of Explosive Strength in Soccer Players

100%

de Salles P., Vasconcellos F., de Salles G., Fonseca R., Dantas E.

Journal of Human Kinetics

2012

vol. 33

115-121

The purpose of this study was to check the validity and the intra- and inter-evaluators reproducibility of the Sargent Jump Test, as an instrument of explosive strength measurement of soccer players of the sub-15 class. Forty-five soccer players were randomly selected from different clubs competing in the local soccer championship. All subjects performed one test on the same jump platform model Jumptest® (Hidrofit Ltda, Brazil) and two independent Sargent Jump Tests assessed by the same evaluator. Two days later, another Sargent Jump Test was performed simultaneously assessed by 2 evaluators. In all tests, three jumps were performed and the highest one was registered. In order to check the validity, the first Sargent Jump Test results were compared to those from the jump platform, considered the gold standard. To evaluate intra- and inter-evaluator reproducibility, results from the first, second and third Sargent Jump Tests were analyzed. The validity and reproducibility were evaluated by intraclass correlation coefficients (ICC), and by the Bland and Altman test (statistical pack SPSS 11.0), with a significance level set at p<0.05. The values found for validity (r=0.99, p=0.001), for intra-evaluator reproducibility (r=0.99, p=0.001) and for inter-evaluator reproducibility (r=1.0, p=0.001), permitted us to conclude that the Sargent Jump Test is a valid and reproducible instrument for measuring the explosive strength in homogeneous groups, such as those used in the present study.

Refine search results

2 Journal of Human Kinetics

1 Human Movement

1 2014

2 2012

3 Vasconcellos F.

2 Dantas E.

1 Brito J.

1 De Mello D.

1 De Salles P.

1 Fonseca R.

1 Junior A.

1 Krustrup P.

1 Oliveira J.

1 Rebelo A.

1 de Salles G.

1 de Salles P.

Search results

Short-Term Performance Effects of Three Different Low-Volume Strength-Training Programmes in College Male Soccer Players

The Vertical Jump Height of Soccer Players after Static Overstretching

Validity and Reproducibility of the Sargent Jump Test in the Assessment of Explosive Strength in Soccer Players