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Scientific article
Open access
English

Characterization of Static Strength, Vertical Jumping, and Isokinetic Strength in Soccer Players According to Age, Competitive Level, and Field Position

Publication date2023-01-18
First online date2023-01-18
Abstract

Muscular strength is strongly related to speed and agility tasks, which have been described as the most decisive actions preceding goals in the soccer game. This study aimed to characterize the players’ strength indicators and to analyze the variation associated with age, competition level, and positional role. Eighty-three male soccer players from A team (n = 22), B team (n = 17), U-23 (n = 19), and U-19 (n = 25) participated in this study. Handgrip strength was assessed using a hand dynamometer (Jamar Plus+), countermovement jump (CMJ) and the squat jump (SJ) were evaluated using Optojump Next, and a Biodex System 4 Pro Dynamometer was used to assess the isokinetic strength of knee extension/flexion. Team A players showed increased lower-body strength compared to their peers, mainly through their increased vertical jumping capacity (i.e., CMJ and SJ; ps < 0.019), and superior performance in isokinetic assessments (i.e., peak torque, total work, and average power). Overall, older players outperformed their younger peers regarding vertical jumping, static strength, and average power in isokinetic strength (ps < 0.005). This study emphasizes the superior strength levels of professional soccer players compared with their lower-division peers, even after controlling by age. This information is of great value to sports agents and coaches, underlining the need to design and include strength-specific content during soccer training.

eng
Keywords
  • Average power
  • Countermovement jump
  • Football
  • Muscle strength
  • Peak torque
  • Squat jump
  • Total work
Research group
Citation (ISO format)
GOUVEIA, João Nuno et al. Characterization of Static Strength, Vertical Jumping, and Isokinetic Strength in Soccer Players According to Age, Competitive Level, and Field Position. In: International journal of environmental research and public health, 2023, vol. 20, n° 3, p. 1799. doi: 10.3390/ijerph20031799
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Article (Published version)
Identifiers
ISSN of the journal1660-4601
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Creation08/17/2023 1:05:27 PM
First validation08/24/2023 12:32:54 PM
Update time08/24/2023 12:32:54 PM
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