The isokinetic strength profile of quadriceps and hamstrings in elite volleyball players

Hadžić, Vedran; Sattler, Tine; Marković, Goran; Veselko, Matjaž; Dervišević, Edvin

doi:10.3233/ies-2010-0365

Cited by 44 publications

(59 citation statements)

References 28 publications

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“…There are limited studies evaluating limb symmetry and physical performance in older adults. However, studies of younger adults show similar findings to ours in that international level athletes displayed a greater degree of asymmetry hamstring and quadriceps strength relative to the national level athletes [31]. Because SPPB performance can predict health outcomes (disability onset, hospitalizations and death) in older adults populations [24, 27–28], exhibiting and maintaining this asymmetry may be important in healthy aging.…”

Section: Discussionsupporting

confidence: 77%

Functional foot symmetry and its relation to lower extremity physical performance in older adults: The Framingham Foot Study

Riskowski

Hagedorn

Dufour

et al. 2012

Journal of Biomechanics

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Background While many studies use gait symmetry as a marker of healthy gait, the evidence that gait symmetry exists is limited. Because gait symmetry is thought to arise through laterality (i.e., limb preference) and affects gait retraining efforts, it is important to understand if symmetry exists during gait in older adults. Therefore, the purpose of this study was to evaluate foot and gait symmetry in the population-based Framingham Foot Study as well as to determine the effects of vertical force symmetry on physical performance measures. Methods Members of the Framingham Foot Study were included in this analysis (N=1333). Foot function and force data were collected using the Tekscan Matscan during self-selected gait, with symmetry evaluated using the symmetry index. The short physical performance battery (SPPB) measures of balance, chair stands and gait speed assessed lower extremity physical function. Participants were evaluated using quartiles of gait speed and foot symmetry to determine the effects of symmetry on lower extremity physical function. Results Individuals with faster gait speed displayed greater foot function asymmetry; individuals with −3.0% to −9.5% asymmetry in foot function performed better on the short physical performance battery (SPPB). Further, with aging, the degree of asymmetry was reduced. Conclusions While this research suggests that a moderate degree of foot asymmetry is associated with better lower extremity function, the causes of vertical force asymmetry are unknown. Future studies should evaluate the causes of foot asymmetry and should track the changes in symmetry that occur with aging.

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Section: Discussionsupporting

confidence: 77%

Functional foot symmetry and its relation to lower extremity physical performance in older adults: The Framingham Foot Study

Riskowski

Hagedorn

Dufour

et al. 2012

Journal of Biomechanics

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“…When testing of one side was completed, a 3-minute rest period was allowed. 19 During this time period, the machine setting was changed to accommodate the opposite leg. The testing order for each leg was randomly assigned for each athlete.…”

Section: Methodsmentioning

confidence: 99%

“…[17][18][19] Apart from a concentric activation, isokinetic diagnostics allow identification of eccentric muscular abilities that are difficult to observe through traditional resistance measuring protocols such as free weights and machines. 20 Isokinetic strength may serve as a valuable predictor of jumping performance, but the findings of current literature are controversial.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the association between isokinetic knee strength with offensive and defensive jumping capacity in high-level female volleyball athletes

Sattler

Sekulić

Esco

et al. 2015

Journal of Science and Medicine in Sport

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“…Before each testing session, the gravity correction method of the dynamometer was chosen in accordance with the manufacturer’s recommendations. The subjects performed a general cardiovascular warm-up for at least 5 minutes on a Monark cycle ergometer at a moderate pace (50–100 W) followed by a 10-minute dynamic stretching concentrating on the lower body [27], [28].…”

Section: Methodsmentioning

confidence: 99%

The Effects of Comprehensive Warm-Up Programs on Proprioception, Static and Dynamic Balance on Male Soccer Players

et al. 2012

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PurposeThe study investigated the effects of FIFA 11+ and HarmoKnee, both being popular warm-up programs, on proprioception, and on the static and dynamic balance of professional male soccer players.MethodsUnder 21 year-old soccer players (n = 36) were divided randomly into 11+, HarmoKnee and control groups. The programs were performed for 2 months (24 sessions). Proprioception was measured bilaterally at 30°, 45° and 60° knee flexion using the Biodex Isokinetic Dynamometer. Static and dynamic balances were evaluated using the stork stand test and Star Excursion Balance Test (SEBT), respectively.ResultsThe proprioception error of dominant leg significantly decreased from pre- to post-test by 2.8% and 1.7% in the 11+ group at 45° and 60° knee flexion, compared to 3% and 2.1% in the HarmoKnee group. The largest joint positioning error was in the non-dominant leg at 30° knee flexion (mean error value = 5.047), (p<0.05). The static balance with the eyes opened increased in the 11+ by 10.9% and in the HarmoKnee by 6.1% (p<0.05). The static balance with eyes closed significantly increased in the 11+ by 12.4% and in the HarmoKnee by 17.6%. The results indicated that static balance was significantly higher in eyes opened compared to eyes closed (p = 0.000). Significant improvements in SEBT in the 11+ (12.4%) and HarmoKnee (17.6%) groups were also found.ConclusionBoth the 11+ and HarmoKnee programs were proven to be useful warm-up protocols in improving proprioception at 45° and 60° knee flexion as well as static and dynamic balance in professional male soccer players. Data from this research may be helpful in encouraging coaches or trainers to implement the two warm-up programs in their soccer teams.

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The isokinetic strength profile of quadriceps and hamstrings in elite volleyball players

Cited by 44 publications

References 28 publications

Functional foot symmetry and its relation to lower extremity physical performance in older adults: The Framingham Foot Study

Functional foot symmetry and its relation to lower extremity physical performance in older adults: The Framingham Foot Study

Analysis of the association between isokinetic knee strength with offensive and defensive jumping capacity in high-level female volleyball athletes

The Effects of Comprehensive Warm-Up Programs on Proprioception, Static and Dynamic Balance on Male Soccer Players

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