Index of fatigue quadriceps in soccer athletes after anterior cruciate ligament reconstruction

Cavalcante, Maria Luzete Costa; Teixeira, Paulo Renan Lima; Sousa, Tamara Cristina Silva; Lima, Pedro Olavo de Paula; Oliveira, Rodrigo Ribeiro de

doi:10.1016/j.rboe.2016.08.009

Cited by 7 publications

(6 citation statements)

References 23 publications

(14 reference statements)

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“…Knee extension/flexion (concentric/concentric muscle action) strength was measured on an isokinetic dynamometer Biodex System II (Biodex Medical Systems, Shirley, NY, USA). The test consisted of 5 and 15 knee flexion/extension repetitions for each leg at 60°/s and 300°/s, respectively [ 26 ]. These tests have good reliability and reproducibility [ 27 ].…”

Section: Methodsmentioning

confidence: 99%

Long-Term Changes in Vertical Jump, H:Q Ratio and Interlimb Asymmetries in Young Female Volleyball Athletes

Abad¹,

Lopes²,

Lara³

et al. 2022

IJERPH

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The present study aimed to examine the changes that occurred in vertical jump and isokinetic dynamometer (ISK) performances at the beginning of a preparatory period (PRE) and at the start of the competitive period (POST). Sixteen U-17 elite female volleyball players, from a national level (15.34 ± 1.19 years; 66.35 ± 7.95 kg; 169.22 ± 24.79 cm), performed bilateral squat jump (SJ), bilateral and unilateral countermovement jump (CMJ) and unilateral ISK tests for knee flexors (Fl) and extensors (Ex) both at 60°/s and at 300°/s. Peak torque (PT) and the hamstring-to-quadriceps (H:Q) ratio were assessed by concentric actions. Asymmetries were calculated by the percentage differences between dominant (DOM) and nondominant legs (NDOM). The paired Student’s t-test was used for comparisons at a level of significance of 5%. The effect size was also calculated. A significant increase was found for both SJ (15%; p = 0.004; ES = 0.82) and CMJ (12%; p = 0.017; ES = 0.62). The PT of NDOM flexors at 60°/s was significantly lower than DOM both at PRE (4.6%; p = 0.048; ES = −0.22) and POST (6.3%; p = 0.037; ES = −0.33). The NDOM extensors at 60°/s had a significantly lower PT than DOM at POST (7.0%; p = 0.048; ES = −0.23). Both DOM and NDOM flexors at 60°/s had a PT enhancement at POST related to PRE (6.7%; p = 0.031; ES = 0.51 and 5.6%; p = 0.037; ES = 0.48, respectively). The PT of NDOM extensors at 300°/s increased at POST in comparison to PRE (7.9%; p = 0.038; ES = 0.27). The NDOM at 300°/s had a H:Q ratio higher than DOM both in PRE and POST (8.6%; p = 0.041; ES = 0.37 and 11.6%; p = 0.013; ES = 0.71, respectively), and the highest H:Q ratios were lower than the reference values (<80%). The asymmetry of the unilateral CMJ was higher at POST than at PRE (102%; p = 0.03; ES = 0.81). The PT for the flexors at 300°/s and the H:Q ratio at POST exceeded 10%. In conclusion, a training program of 15 weeks increased the neuromuscular performance of young volleyball athletes, but many H:Q ratios and asymmetries remained out of the normal recommendation. Volleyball professionals should carefully apply an adequate training program to enhance physical fitness performance without increasing the risk of lower limb injuries concurrently.

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Section: Methodsmentioning

confidence: 99%

Long-Term Changes in Vertical Jump, H:Q Ratio and Interlimb Asymmetries in Young Female Volleyball Athletes

Abad¹,

Lopes²,

Lara³

et al. 2022

IJERPH

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“…Secara fisiologi, kelelahan otot dapat didefinisikan sebagai penurunan kinerja otot selama aktivitas fisik, sehingga individu tidak dapat mempertahankan kukatan, power, dan/atau daya tahan yang diharapkan (Cavalcante et al, 2016), terkait dengan penurunan kinerja otot dan meningkatkan kerentanan terhadap cedera (Bishop, 2012). Kelelahan dihasilkan dari kombinasi gangguan sistem neuromuskuler yang penyebabnya dapat berupa: penurunan laju pengiriman energi & ketersediaan substrat (penipisan fosfocreatin, penipisan glikogen, penipisan oksigen yang berkepanjangan) (Finsterer, 2012), peningkatan suhu, kegagalan mekanisme kontraktil otot dan perubahan kontrol saraf otot (Hanjabam & Kailashiya, 2015).…”

Section: Pendahuluanunclassified

Indeks Kelelahan Mahasiswa Pendidikan Olahraga Setelah Mengikuti Perkuliahan Sampai Pertengahan Semester

Sinulingga,

Nova

et al. 2022

JSSF

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Abstrak Istilah "Indeks Kelelahan" mengacu pada tingkat penurunan output daya atlet selama aktivitas intensitas tinggi, yang dapat memberikan informasi tentang kapasitas anaerobik atlet. Penelitian ini bertujuan untuk mengetahui lebih baik kinerja fisik dan indeks kelelahan mahasiswa setelah mengikuti perkuliahan selama pertengahan semester di jurusan pendidikan olahraga universitas Riau. Penelitian ini merupakan penelitian deskriptif kuantitatif dengan menggunakan metode survey dengan teknik tes dan pengukuran. Teknik pengambilan sampel pada penelitian ini menggunakan teknik purposive sampling yang berjumlah dua puluh lima mahasiswa semester tiga (umur: 19,36 tahun; tinggi: 169,88 cm; berat: 61,92 kg). Instrumen indeks kelelahan berupa tes Repeat Anaerobic Ability (RSA) dengan lari sprint jarak 10X30 meter yang dilakukan setiap 30 detik. Hasil pengukuran diperoleh satu siswa memiliki indeks kelelahan kategori istimewa, delapan siswa memiliki kategori baik, lima belas siswa kategori sedang, dan satu siswa kategori kurang baik. Hasilnya, Indeks Kelelahan mahasiswa semester tiga pada tengah semester termasuk dalam kategori sedang. Abstract The term "Fatigue Index" refers to the rate at which the athlete's power output decreases during a high-intensity performance, which can provide information on the athlete's anaerobic capacity. This study aims to understand better student university's physical performance and fatigue index after mid-semester at the department of sports education, university of Riau. This quantitative descriptive study uses survey methods with test and measurement techniques. The sampling technique in this study used a purposive sampling technique with a total of twenty five third-semester students (age: 19.36 years; height: 169.88cm; weight: 61.92 kg). The fatigue index instrument is Repeat Anaerobic Ability (RSA) test involving 10X30 meters performed every 30 seconds. The measurement results obtained that one student had an excellent category of fatigue index, eight students had a good category, average categories belonged to fifteen students, and Poor categories belonged to one student. As a result, the Fatigue index of students third semester in the mid-semester is the average category.

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“…Contralateral retear : more likely with initial surgery on non-dominant limb (16% versus 3.5%; p = 0.03) Carling et al 2015 [ 27 ] Study Type : Prospective Observational Population Pool : Soccer players from French Ligue 1 clubs who also participated in national team duties during testing period (Timeline: 5-season period from 2009/10 to 2013/14) Whole Sample : 30 male professional soccer players participating in both club and national team duties Injured Sample : 11 (37.7%) players sustained 12 injuries during national team participation Dominance Definition : Not Reported Right : Not Reported Left : Not Reported Ambidextrous/Mixed : Not Reported Injury Definition : Time-Loss Injury: if the player was unable to participate in future soccer training or match play because of injury to lower extremity Type(s) : Any Body Part(s) : Any DOM Injuries : 8 (66.7%) NON-DOM Injures : 4 (33.3%) AMBI Injuries : N/A BILATERAL Injuries : N/A Significance : Not Reported By Injury Type: Sprains (n = 3, dominant 3, non-dominant 0); Strains (n = 8, dominant 4, non-dominant 4); Tendinopathies (n = 1, dominant 1, non-dominant 0). Contact Injuries : All 3 recorded contact injuries were sustained to the dominant limb; Non-Contact Injuries : Of 9 non-contact injuries, 5 dominant and 4 non-dominant Cavalcante et al 2016 [ 28 ] Study Type : Cross-Sectional Population Pool : Soccer players with ACL reconstruction from Brazilian professional football clubs (Timeline: 1-year study period from August 2011 to July 2012) Whole Sample : Identical to Injured Sample Injured Sample : 17 male professional soccer players (age 21.3 ± 4.4 years; BMI 23.4 ± 1.5 kg/cm 2 ) Dominance Definition : Not Reported Right : 9 (53%) Left : 8 (47%) Ambidextrous/Mixed : N/A Injury Definition : Patients who had sustained ACL tear and underwent reconstruction Type(s) : ACL tears Body Part(s) : Knee DOM Injuries : 5 (29%) NON-DOM Injures : 12 (71%) AMBI Injuries : N/A BILATERAL Injuries : N/A Significance : Greater number of injuries in non-dominant limb (significant difference; value not specified)...…”

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confidence: 99%

The dominant leg is more likely to get injured in soccer players: systematic review and meta-analysis.

DeLang¹,

Salamh²,

Farooq³

et al. 2021

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In soccer (football), dominant limb kicking produces higher ball velocity and is used with greater frequency than the non-dominant limb. It is unclear whether limb dominance has an effect on injury incidence. The purpose of this systematic review with meta-analysis is to examine the relationship between limb dominance and soccer injuries. Studies were identified from four online databases according to PRISMA guidelines to identify studies of soccer players that reported lower extremity injuries by limb dominance. Relevant studies were assessed for inclusion and retained. Data from retained studies underwent meta-analyses to determine relative risk of dominant versus non-dominant limb injuries using random-effects models. Seventy-four studies were included, with 36 of them eligible for meta-analysis. For prospective lower extremity injury studies, soccer players demonstrated a 1.6 times greater risk of injury to the dominant limb (95% CI [1.3–1.8]). Grouped by injury location, hamstring (RR 1.3 [95% CI 1.1–1.4]) and hip/groin (RR 1.9 [95% CI 1.3–2.7]) injuries were more likely to occur to the dominant limb. Greater risk of injury was present in the dominant limb across playing levels (amateurs RR 2.6 [95% CI 2.1–3.2]; youths RR 1.5 [95% CI 1.26–1.67]; professionals RR 1.3 [95% CI 1.14–1.46]). Both males (RR 1.5 [95% CI 1.33–1.68)] and females (RR 1.5 [95% CI 1.14–1.89]) were more likely to sustain injuries to the dominant limb. Future studies investigating soccer injury should adjust for this confounding factor by using consistent methods for assigning limb dominance and tracking use of the dominant versus non-dominant limb.

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Index of fatigue quadriceps in soccer athletes after anterior cruciate ligament reconstruction

Cited by 7 publications

References 23 publications

Long-Term Changes in Vertical Jump, H:Q Ratio and Interlimb Asymmetries in Young Female Volleyball Athletes

Long-Term Changes in Vertical Jump, H:Q Ratio and Interlimb Asymmetries in Young Female Volleyball Athletes

Indeks Kelelahan Mahasiswa Pendidikan Olahraga Setelah Mengikuti Perkuliahan Sampai Pertengahan Semester

The dominant leg is more likely to get injured in soccer players: systematic review and meta-analysis.

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