The effects of knee extensor eccentric training on functional tests in healthy subjects

Santos, Hellen Bandeira de Pontes; Ávila, Mariana Arias; Hanashiro, Daniela Naomi; Camargo, Paula R.; Salvini, Tania F.

doi:10.1590/s1413-35552010005000014

Cited by 12 publications

(15 citation statements)

References 51 publications

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“…Unfortunately, leg dominance was not revealed in this study. Second, Santos, Ávila, Hanashiro, Camargo, and Salvini (2010) observed that eccentric training not only improved The relationships of strength, power and balance 5 eccentric peak torque (at 30°s -1 and 120°s -1 ) of the knee extensors, but also increased distance achieved in both the single and triple hop test. It can be inferred that in the university group, greater relative eccentric strength of the knee extensors enabled the participants to achieve a greater normalised reach score, specifically when balancing on their non-dominant leg.…”

Section: Eccentric Strength Of the Knee Extensors And Dynamic Balancementioning

confidence: 93%

The relationships of eccentric strength and power with dynamic balance in male footballers

Booysen

Gradidge

Watson

2015

Journal of Sports Sciences

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Unilateral balance is critical to kicking accuracy in football. In order to design interventions to improve dynamic balance, knowledge of the relationships between dynamic balance and specific neuromuscular factors such as eccentric strength and power is essential. Therefore, the aim was to determine the relationships of eccentric strength and power with dynamic balance in male footballers. The Y-balance test, eccentric isokinetic strength testing (knee extensors and flexors) and the countermovement jump were assessed in fifty male footballers (university (n = 27, mean age = 20.7 ± 1.84 years) and professional (n = 23, mean age = 23.0 ± 3.08 years). Spearman Rank Order correlations were used to determine the relationships of eccentric strength and power with dynamic balance. Multiple linear regression, adjusting for age, mass, stature, playing experience and competitive level was performed on significant relationships. Normalised reach score in the Y-balance test using the non-dominant leg for stance correlated with (1) eccentric strength of the non-dominant leg knee extensors in the university group (r = 0.50, P = 0.008) and (2) countermovement jump height in the university (r = 0.40, P = 0.04) and professional (r = 0.56, P = 0.006) football groups, respectively. No relationships were observed between eccentric strength (knee flexors) and normalised reach scores. Despite the addition of potential confounders, the relationship of power and dynamic balance was significant (r = 0.52, P < 0.0002). The ability to generate power correlates moderately with dynamic balance on the non-dominant leg in male footballers.

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Section: Eccentric Strength Of the Knee Extensors And Dynamic Balancementioning

confidence: 93%

The relationships of eccentric strength and power with dynamic balance in male footballers

Booysen

Gradidge

Watson

2015

Journal of Sports Sciences

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“…Subjects were then asked to perform three maximal voluntary isometric contractions (MVICs) each lasting five seconds at intervals of 60 seconds [31]. …”

Section: Methodsmentioning

confidence: 99%

Effects of strength training with blood flow restriction on torque, muscle activation and local muscular endurance in healthy subjects

Sousa¹,

Neto²,

Santos³

et al. 2017

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The present study aimed to analyse the effects of six weeks of strength training (ST), with and without blood flow restriction (BFR), on torque, muscle activation, and local muscular endurance (LME) of the knee extensors. Thirty-seven healthy young individuals were divided into four groups: high intensity (HI), low intensity with BFR (LI+BFR), high intensity and low intensity + BFR (COMB), and low intensity (LI). Torque, muscle activation and LME were evaluated before the test and at the 2nd, 4th and 6th weeks after exercise. All groups had increased torque, muscle activation and LME (p<0.05) after the intervention, but the effect size and magnitude were greater in the HI, LI+BFR and COMB groups. In conclusion, the groups with BFR (LI+BFR and COMB) produced magnitudes of muscle activation, torque and LME similar to those of the HI group.

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“…only fruit juice was allowed as breakfast, lunch, or dinner, 90 minutes before the testing session, and only a glass of water (200 ml) was allowed before taking the measurement. The subject warmed up on a stationary bicycle (75 W) for 5 minutes at the speed of 20 km/h; this was followed by a set of three 30-s stretches (with 30-s intervals) focused on knee flexors, knee extensors, and plantar flexors [25]. After that, the subjects were positioned in an isokinetic dynamometer with the backrest reclined 5° from the vertical plane and knees flexed at 90°.…”

Section: Methodsmentioning

confidence: 99%

The long-term effects of static stretching at different times of day on hamstring peak torque and flexibility in trained individuals

Abdel-aziem¹,

Draz²,

Mosaad³

2018

Physiother Quart.

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Introduction. There is some recent evidence that temporal specificity is important for optimizing training for muscular performance. This study was to examine the long-term effects of static stretching performed at different times of day on hamstring torque and flexibility. Methods. The total of 60 trained male subjects with tight hamstring were selected and randomly divided into 3 equal groups. Group A received static stretch in the morning (07:00-9:00), group B in the afternoon (13:00-16:00), and group C in the evening (18:00-20:00). The hamstring isokinetic concentric and eccentric peak torque and knee extension range of motion were assessed before and after 6 weeks of static stretching (3 repetitions of 30 s, 5 times/week). Results. A statistically significant increase was observed in hamstring concentric and eccentric torque, and flexibility after static stretching at different times of day (p < 0.05). The concentric and eccentric torque post-training values were significantly higher than the pre-training values (p < 0.05). The hamstring flexibility post-training values of groups B and C were significantly higher than for group A (p < 0.05). The torque and flexibility change scores of groups B and C were significantly higher than for group A (p < 0.05), without any significant difference between groups B and C (p > 0.05).Conclusions. Afternoon and evening static stretching is more effective than morning stretching in improving the hamstring concentric and eccentric torque and flexibility. Therefore, static stretching is a time-dependent task and should be scheduled by clinicians, coaches, and athletes in the afternoon or evening.

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The effects of knee extensor eccentric training on functional tests in healthy subjects

Abstract: Background: It is well known that eccentric training increases muscle strength and promotes greater neural activation, and therefore

Cited by 12 publications

References 51 publications

The relationships of eccentric strength and power with dynamic balance in male footballers

The relationships of eccentric strength and power with dynamic balance in male footballers

Effects of strength training with blood flow restriction on torque, muscle activation and local muscular endurance in healthy subjects

The long-term effects of static stretching at different times of day on hamstring peak torque and flexibility in trained individuals

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