Effect of Muscular Strength, Asymmetries and Fatigue on Kicking Performance in Soccer Players

Malý, Tomáš; Sugimoto, Dai; Izovska, Jana; Zahálka, František; Malá, Lucía

doi:10.1055/s-0043-123648

Cited by 41 publications

(29 citation statements)

References 33 publications

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“…Kong & Burns [45] reported the range as 42–80% for healthy men and women. In a recent study [46], the authors reported a significant relationship between the ipsilateral isokinetic strength ratio and shooting accuracy of the kicking leg.…”

Section: Discussionmentioning

confidence: 99%

Morphological and isokinetic strength differences: bilateral and ipsilateral variation by different sport activity

et al. 2019

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AbstractBackgroundThe purpose of this study was to investigate the morphological and isokinetic strength asymmetry and magnitude in young athletes.MethodsOne hundred and thirty nine male subjects (soccer, floorball, non-athletes) were measured for proportion of muscle mass between upper extremities (BADΔ) and lower extremities (BLDΔ). Moreover, the peak muscle torque of knee extensors (PTE) and flexors (PTF), ipsilateral (H:Q) and bilateral strength ratio (Q:Q, H:H) were measured.ResultsWe found significant differences in observed parameters with respect to different sport activities (F = 13.02, p = 0.00, $\eta^2_p$= 0.80). Higher values of BADΔ were observed in the non-active (0.19 ± 0.11 kg) group compared with soccer players (0.10 ± 0.11 kg). We found a lower value of BLDΔ in floorball players (0.32 ± 0.11 kg) compared with soccer players (0.58 ± 0.27 kg) and non-active boys (0.63 ± 0.28 kg). Results revealed significantly higher PTE in soccer players compared with non-active boys and floorball players and higher Q:Q ratio in soccer players (10.99 ± 7.75%) compared with non-active boys (7.47 ± 5.92%).ConclusionsThis study revealed that there are morphological and strength asymmetries in the observed groups, which may have potential maladaptive effects (e.g. uncompensated overload of extremity) in athletes affected by specific load.

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Section: Discussionmentioning

confidence: 99%

Morphological and isokinetic strength differences: bilateral and ipsilateral variation by different sport activity

et al. 2019

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“…Soccer players use both legs to kick, but they kick more often and harder with the preferred leg. Asymmetry of the lower extremities can be a consequence of unilateral kicking and greater movement repetition of the preferred limb [12]. Shortened optimal muscle length, lack of muscle flexibility, strength imbalance, and previous injuries may have severe physical consequence including increased risk of injury [13] which may negatively affect athletic performance.…”

Section: Introductionmentioning

confidence: 99%

Anthropometric, Body Composition, and Morphological Lower Limb Asymmetries in Elite Soccer Players: A Prospective Cohort Study

Malá

Malý

Cabell

et al. 2020

IJERPH

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The aim of this study was to identify and compare parameters related to anthropometry, body composition (BC), and morphological asymmetry in elite soccer players in nine age categories at the same soccer club (n = 355). We used a bio-impedance analyzer to measure the following indicators of BC: body height (BH); body mass (BM); relative fat-free mass (FFMr); percentage of fat mass (FM); and bilateral muscle mass differences in the lower extremities (BLD∆). Age showed a significant influence on all parameters observed (F 64,1962 = 9.99, p = 0.00, λ = 14.75, η 2 p = 0.25). Adolescent players (from U16 through adults) had lower FM values (<10%) compared to players in the U12-U15 categories (>10%). The highest FFMr was observed in the U18 category. Players in the U12 and U13 categories showed more homogenous values compared to older players. With increasing age, significantly higher FFMr was observed in the lower extremities. An inter-limb comparison of the lower extremities showed significant differences in the U17 category (t 27 = 2.77, p = 0.01) and in adult players (t 68 = 5.02, p = 0.00). Our results suggest that the end of height growth occurs around the age of 16 years, while weight continues to increase until 20 years. This increase is not linked to decreasing FM, nor to the FFMr, which remains stable. We found morphological asymmetries between limbs in players of the U17 category and in adult players.

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“…In recent years, football success has been shown to be highly dependent on various physical, technical, tactical, and psychological factors [1,2,3,4,5,6,7,8]. Bangsbo [9] emphasized that for successful competitiveness, the development of speed, agility, strength with combination of aerobic and anaerobic (even maximal) abilities is important for successful, competitive football careers.…”

Section: Introductionmentioning

confidence: 99%

Physical Fitness Characteristics of High-level Youth Football Players: Influence of Playing Position

Bujnovky

Malý

Ford

et al. 2019

Sports

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The aim of this study was to determine whether the speed, agility, aerobic and anaerobic capacities of football players varied by playing positions. Elite youth football players (n = 123, age = 15.7 ± 0.5 years) who played in six different positions, as goalkeepers (GK), full backs (FB), central defenders (CD), wide midfielders (WM), central midfielders (CM), and attackers (AT), were assessed. Multivariate analysis of variances was used to compare the following variables: Linear running sprint for 5 m (S5) and 10 m (S10), flying sprint for 20 m (F20), agility 505 test with turn on the dominant (A505D) and non-dominant leg (A505N), agility K-test, Yo-Yo intermittent recovery (YYIR1) test and repeat sprint ability (RSA) test. The results showed significant influence of playing positions on linear-running sprint performance (F1,123 = 6.19, p < 0.01, ηp2 = 0.23). Midfielders reached significantly higher performance levels (CM = 2.44 ± 0.08 s, WM = 2.47 ± 0.13 s) in the A505N test compared to GK (2.61 ± 0.23 s). Outfield players had significantly higher performance in both YYIR1 and RSA tests compared to GK (p < 0.01). The results of this study may provide insightful strategies for coaches and clinical practitioners for developing position-specific conditioning programs.

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Effect of Muscular Strength, Asymmetries and Fatigue on Kicking Performance in Soccer Players

Cited by 41 publications

References 33 publications

Morphological and isokinetic strength differences: bilateral and ipsilateral variation by different sport activity

Morphological and isokinetic strength differences: bilateral and ipsilateral variation by different sport activity

Anthropometric, Body Composition, and Morphological Lower Limb Asymmetries in Elite Soccer Players: A Prospective Cohort Study

Physical Fitness Characteristics of High-level Youth Football Players: Influence of Playing Position

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