Isokinetic strength and anaerobic/intermittent capacity of Japanese lacrosse players

Tsuchiya, Yosuke; Ochi, Eisuke; Sakuraba, Keishoku; Kikuchi, Naoki; Hwang, Inkwan

doi:10.3233/ies-2012-0474

Cited by 8 publications

(6 citation statements)

References 13 publications

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“…The second parameter; ratio hamstrings/quadriceps (H/Q), was 62%, for both thighs. According to the literature, for an H/Q ratio comprised between 55 and 65%, there is no muscular imbalance requiring a specific strength program 4,5,[11][12][13][15][16][17] . European and Brazilian footballers have shown an average ratio of 64% 13,17 .…”

Section: Discussionmentioning

confidence: 99%

“…These parameters allow defining the muscular strength profile (MSP) which is a reliable data in order to allow monitoring the individual strength training program for each athlete, and the rehabilitation of muscular injuries, mainly occurring in the lower limb 11 . Actually, it has been proven that the use of isokinetic equipment in top-level sports contributes to improving performance 12 . Technical performance parameters increase when the training succeeds in boosting the muscles strength and balance 13 .…”

Section: Introductionmentioning

confidence: 99%

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Muscular strength profile in Tunisian male national judo team

Ghrairi¹

2014

MLTJ

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Background: it is well established that muscle strength is a determinant factor in judo. However, little data are available for African athletes. Therefore, the aim of this study was to provide reference data of the muscular strength profile (MSP) for an African team, Tunisian judo team. Methods: the study was conducted among ten international judo athletes from Tunisia. To determine their MSP, we used an isokinetic dynamometer to assess Hamstrings, Quadriceps of both knees and external, internal rotators of both shoulders. The angular velocities of the assessments were; 90, 180, 240°/s for the knees and 60, 120°/s for the shoulders. Results: MSP was determined based on two parameters; the maximum peak torque (PT) of each muscle and the ratio agonistic/antagonistic muscles (R). The knee extensors and flexors in the "supporting leg" had higher PT than in the "attacking leg"; respectively, 245N.m versus 237 (p<0.05) and 147 N.m versus 145 (p>0.05). R was normal for both legs. Furthermore, both rotators of the dominant shoulder had higher PT; 84 N.m versus 71 for the internal rotators (p<0.05) and 34,7 N.m versus 29,0 for the lateral rotators (p<0.05). Inversely, R was higher in the non-dominant side; 45% versus 35, p<0.05). Conclusion: the MSP of the selected elites Tunisian judo athletes was characterized by 3 major features; a strength of the quadriceps in the standing leg significantly higher than in the attacking leg, a normal muscular balance Hamstrings/quadriceps in both legs and a strength of the shoulder' rotators higher in the dominant side.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Muscular strength profile in Tunisian male national judo team

Ghrairi¹

2014

MLTJ

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“…The Wingate test involved subjects pedaling a bicycle ergometer (PowerMax VIII, Combi, Taito-ku, Tokyo Japan) for a maximum of 30 s at a load of 7.5% of their body weight. 9 The rotational speed was recorded every 5 s, and the peak and mean power were calculated.…”

Section: Methodsmentioning

confidence: 99%

“…Peak torque was calculated by measuring the left and right legs of the subjects at low speed (60°/s), medium speed (180°/s), and high speed (300°/s) while in a sitting position. 9 The obtained values were shown as the relative value per kilogram of body weight.…”

Section: Methodsmentioning

confidence: 99%

“…They also found that backs had greater running capacity than other positions. 8 Tsuchiya et al 9 measured isokinetic knee extension and flexion force in male lacrosse players and reported that midfielders have significantly higher isokinetic knee flexion strength at high speeds than do attackers. While other reports have elucidated the association between isokinetic strength and performance in sports such as athletics and soccer, 10 , 11 no studies have investigated differences in anthropometric characteristics and fitness between canoe and kayak paddlers.…”

Section: Introductionmentioning

confidence: 99%

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Relationship between performance test and body composition/physical strength characteristic in sprint canoe and kayak paddlers

Hamano¹,

Ochi²,

Tsuchiya³

et al. 2015

OAJSM

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ObjectiveCanoe sprint is divided into canoe and kayak. The difference between the two competitions is in physical performance. The aim of the present study was to compare and investigate the relationship between physical characteristics and fitness between the two canoe sprint competitors.MethodsSubjects were 11 canoe paddlers (C) and 12 kayak paddlers (K). They underwent anthropometric characteristics, body composition and fitness tests, and 120 s all-out tests using a canoe and kayak ergometer. The unpaired t-test was used to test for significant differences between disciplines, while Pearson’s correlation coefficient was used to examine the association between each measurement item and the performance test.ResultsThe age, height, body mass, body mass index, and total body fat were, C: 20.6±0.9 yr, 172.8±5.2 cm, 70.8±7.8 kg, 23.7±1.9, 14.4%±3.5%; and K: 19.7±1.2 yr, 172.8±5.3 cm, 69.5±7.8 kg, 23.2±2.1, 12.1%±3.6%, respectively. No significant differences were seen in any of the items for physical characteristics or fitness between C and K. A correlation analysis of performance tests and each measurement item revealed a positive correlation with low-speed isokinetic knee extension and flexion strength for C only (extension: r=0.761; flexion: r=0.784; P<0.01). In addition, performance tests were positively correlated with the circumference of arm (upper arm: r=0.876; forearm: r=0.820; P<0.01) and lower limb (thigh: r=0.781; calf: r=0.753; P<0.01) in C and with height (r=0.549, P<0.05), arm span (r=0.639, P<0.05), and leg length (r=0.621, P<0.01) in K.ConclusionWe suggest that the factors correlating with the performance test differ depending on the competitions.

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Discriminative Ability of Lower limb Strength and Power Measures in Lacrosse Athletes

et al. 2022

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The objective of this investigation was to compare isokinetic strength, countermovement jump and drop jump variables between high-contributors and low-contributors within NCAA Division I Men’s and Women’s lacrosse athletes. Men’s (N=36) and Women’s (N=30) NCAA Division I Lacrosse athletes completed strength testing of the quadriceps and hamstring across three speeds (60°·s-1, 180°·s-1, 300°·s-1), countermovement and drop jumps. To determine the discriminative ability of select lower-limb strength and power characteristics participants were categorised as high-contributors (Males N=18, age=20.3±0.4yrs, height=183.9±5.5cm, mass=90.8±5.8kg; Females N=15, age=20.8±0.8yrs, height=169.3±6.7cm, mass= 64.1±7.2kg) or low-contributors (Males N=18, age = 19.5±0.2yrs, height = 184.1±5.6cm; mass = 87.9±8.1kg; Females N=15, age=19.7±0.2yrs, height=169.8±7.0cm, mass=62.9±7.7kg ) based upon the number of games the participants competed in during the regular season. Within the male cohort, moderate significant (p<0.05) differences were observed between high-contributors and low-contributors in isokinetic hamstring strength of the left leg at 300°·s-1 (d = 0.69) and peak power in countermovement jump (d=0.68). Within the women’s cohort a large (d=0.87) significant difference (p<0.05) in isokinetic strength of the left hamstring was observed between high-contributors and low-contributors at 60°·s-1. Hamstring strength and lower-limb power are important strength measures for lacrosse performance and should be prioritised in training prescription for lacrosse athletes.

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Isokinetic strength and anaerobic/intermittent capacity of Japanese lacrosse players

Cited by 8 publications

References 13 publications

Muscular strength profile in Tunisian male national judo team

Muscular strength profile in Tunisian male national judo team

Relationship between performance test and body composition/physical strength characteristic in sprint canoe and kayak paddlers

Discriminative Ability of Lower limb Strength and Power Measures in Lacrosse Athletes

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