Effects of stretch-shortening cycle fatigue protocol on lower limb asymmetry and muscle soreness in judo athletes

Kons, Rafael Lima; Orssatto, Lucas Bet da Rosa; Sakugawa, Raphael Luiz; Silva, Jorge Nelson da; Diefenthaeler, Fernando; Detanico, Daniele

doi:10.1080/14763141.2020.1779335

Cited by 16 publications

(21 citation statements)

References 37 publications

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“…By comparing the magnitude of inter-limb asymmetry between the rested and fatigued state for each test, we found that the asymmetry in triple-hop distance increased post fatigue ( Table 5). Most of previous studies have reported similar findings: the inter-limb asymmetry in unilateral CMJ height increased post fatigue among active male adults (aged 28.9 ± 5.1 years) [9] and elite adolescent male soccer athletes (aged 17.6 ± 0.5 years) [15]; the inter-limb asymmetry in peak force, peak power, and mean power during the unilateral CMJ increased post fatigue among male Judo athletes (aged 22.5 ± 3.6 years) [16]. Collectively, these findings indicate that fatigue amplifies the inter-limb asymmetry in leg power, suggesting the necessity of assessing the inter-limb asymmetry at both the non-fatigued and fatigued state.…”

Section: Discussionsupporting

confidence: 55%

“…The unilateral jump tests have been widely used for assessing the inter-limb asymmetry in lower-limb power as the single-leg jumping movements are common in sports and the assessment is time-efficient [9]. Previous findings showed that the inter-limb asymmetry in single-leg countermovement jump (CMJ) performance increased post fatigue among adolescents and adults [9,15,16]. In addition, the Star Excursion Balance Test (SEBT) and its modified version (Y Balance Test) have been widely used to examine the inter-limb asymmetry in dynamic balance and neuromuscular control.…”

Section: Introductionmentioning

confidence: 99%

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The effect of fatigue on asymmetry between lower limbs in functional performances in elite child taekwondo athletes

et al. 2021

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Background Inter-limb asymmetry above a certain threshold in functional performance indicates increased injury risk in sports. Fatigue has been found to increase bilateral asymmetry in lower-limb jumping performance among high-school and adult athletes, whereas this impact has not been examined in child athletes. This study aimed to examine the effect of fatigue on inter-limb asymmetry in functional performances in elite Taekwondo athletes aged between 9 and 11 years. Methods Performance of single-leg jumps, Star Excursion Balance Test (SEBT), and muscle (hamstring and gastrocnemius) flexibility were measured for 13 elite male child Taekwondo athletes (aged 9.85 ± 0.80 years) at both the rested and fatigued states to examine the inter-limb asymmetry. A two-way repeated measures ANOVA was conducted to examine for difference and the interaction between limb (dominant, non-dominant leg) and state (rested, fatigued state) for each test. Paired t test or Wilcoxon signed-rank test was used to compare the asymmetry magnitude at the rested vs. fatigued state for each test, and the variation of performance post fatigue in the dominant vs. non-dominant leg when appropriate. Results The inter-limb asymmetry in triple-hop distance significantly (p = 0.046) increased with fatigue, whereas the asymmetry significantly (p = 0.004) decreased with fatigue in anterior (ANT) reach distance in SEBT. A significant (p = 0.027) limb by state interaction was shown for posterolateral (PL) reach distance in SEBT, wherein a significant (p = 0.005) bilateral difference was only shown at the rested state. The PL reach distance showed a significantly greater decrease (p = 0.028) post fatigue when using the dominant leg for support compared to using the non-dominant leg. Conclusions Fatigue significantly impacts inter-limb asymmetry in jump performances and dynamic balance for child athletes, while the variation of inter-limb asymmetry post fatigue may be different across tests. For the purpose of injury prevention, practitioners should consider assessing the inter-limb asymmetry for children at both the rested and fatigued state and be mindful of the fatigue response of each leg in functional tests.

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Section: Discussionsupporting

confidence: 55%

Section: Introductionmentioning

confidence: 99%

The effect of fatigue on asymmetry between lower limbs in functional performances in elite child taekwondo athletes

et al. 2021

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“…In addition, a significant asymmetry was identified for SLSLJ at baseline in favor of the dominant limb. We can speculate that the non-dominant limb is likely to demonstrate reduced motor control, compared to the dominant limb during the single-leg jump tests, producing higher instability mainly during the take-off, which is supported by the reduced jump distance compared to the dominant limb (Kons et al, 2020b).…”

Section: Discussionmentioning

confidence: 86%

Effects of successive judo matches on interlimb asymmetry and bilateral deficit

Kons

Pupo

Gheller

et al. 2021

Physical Therapy in Sport

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“…By comparing the magnitude of inter-limb asymmetry between the rested and fatigued state for each test, we found that the asymmetry increased post fatigue in triple-hop distance. Most of previous studies have reported similar ndings: the inter-limb asymmetry in unilateral CMJ height increased post fatigue among active male adults (aged 28.9 ± 5.1 years) [9] and elite adolescent male soccer athletes (aged 17.6 ± 0.5 years) [15]; the inter-limb asymmetry in peak force, peak power, and mean power during the unilateral CMJ increased post fatigue among male Judo athletes (aged 22.5 ± 3.6 years) [16]. Collectively, these ndings indicate that fatigue ampli es the inter-limb asymmetry in leg power, suggesting the necessity of assessing the inter-limb asymmetry at both the nonfatigued and fatigued state.…”

Section: Discussionmentioning

confidence: 55%

“…The unilateral jump testing has been widely used to assess the interlimb asymmetry in lower-limb power as the single-leg jumping movement is common in sports and the assessment is time-e cient [9]. Previous ndings showed that the inter-limb asymmetry in single-leg countermovement jump (CMJ) performance increased post fatigue among adolescents and adults [9,15,16]. In addition to the unilateral jump performance, the Star Excursion Balance Test (SEBT) and its modi ed version (Y Balance Test) have been widely used to examine inter-limb asymmetry in dynamic balance and neuromuscular control.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Fatigue on Asymmetry Between Lower Limbs in Functional Performances in Elite Child Taekwondo Athletes

Guan

Bredin

Jiang

et al. 2020

Preprint

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Background: Inter-limb asymmetry above a certain threshold in functional performance indicates increased injury risk in sports. Fatigue has been found to increase bilateral asymmetry in lower-limb jumping performance among high-school and adult athletes, whereas this impact has not been examined for child athletes. Methods: Performance of single-leg jumps, Star Excursion Balance Test (SEBT), and muscle (hamstring and gastrocnemius) flexibility were measured for 13 elite male child Taekwondo athletes (aged 9.85 ± 0.80 years) at both the rested and fatigued states to examine the inter-limb asymmetry. A two-way repeated measures ANOVA was conducted to examine for difference for each test and the interaction between limb (dominant, non-dominant leg) and state (rested, fatigued state). Paired t test or Wilcoxon Signed-Rank test was used to compare the asymmetry magnitude at the rested vs. fatigued state for each test, and the variation in performance post fatigue in the dominant vs. non-dominant leg when appropriate. Results: The inter-limb asymmetry in triple-hop distance significantly (p = 0.046) increased with fatigue, whereas the asymmetry significantly (p = 0.004) decreased with fatigue in anterior (ANT) reach distance in SEBT. A significant (p = 0.027) limb by state interaction was shown for posterolateral (PL) reach distance in SEBT, wherein a significant (p = 0.005) bilateral difference was only shown at the rested state. The PL reach distance showed a significantly greater decrease (p = 0.028) post fatigue when using the dominant leg for support compared to using the non-dominant leg.Conclusion: Fatigue significantly impacts inter-limb asymmetry in jump performances and dynamic balance for child athletes, while the variation in inter-limb asymmetry post fatigue may be different across tests. For the purpose of injury prevention, practitioners should consider assessing the inter-limb asymmetry for children at both the rested and fatigued state, and be mindful of the fatigue response of each leg in functional tests.

show abstract

Effects of stretch-shortening cycle fatigue protocol on lower limb asymmetry and muscle soreness in judo athletes

Cited by 16 publications

References 37 publications

The effect of fatigue on asymmetry between lower limbs in functional performances in elite child taekwondo athletes

The effect of fatigue on asymmetry between lower limbs in functional performances in elite child taekwondo athletes

Effects of successive judo matches on interlimb asymmetry and bilateral deficit

The Effect of Fatigue on Asymmetry Between Lower Limbs in Functional Performances in Elite Child Taekwondo Athletes

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