The effects of bodyweight-based exercise with blood flow restriction on isokinetic knee muscular function and thigh circumference in college students

Kang, Dong Yeon; Kim, Hyoung Su; Lee, Kyung Soon; Kim, Young Mi

doi:10.1589/jpts.27.2709

Cited by 20 publications

(17 citation statements)

References 19 publications

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“…In the high-intensity movement patterns, quadriceps (knee extensors) and hamstring muscle groups (knee flexors) participate in the primary level movements (Xaverova et al, 2015). Quadriceps muscles, which are also responsible for walking, running, dynamic stabilization of the knee joint, postural balance, and body weight, play a primary role in extensional movement (Kang, Kim, Lee, & Kim, 2015). Knee flexors act as knee joint stabilizers during acceleration, divergence, deceleration and landing (Stolen, Chamari, Castagna, & Wisloff, 2005).…”

Section: Introductionmentioning

confidence: 99%

The Comparison of Lower Extremity Isokinetic Strength in Volleyball Players According to the Leagues

Akarçeşme¹,

Aytar²

2018

WJE

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The purpose of the study is to compare the ratio of lower extremity isokinetic hamstring/quadriceps ratio (H/Q),bilateral strength difference (BLD) and relative peak torques (RPT) in volleyball players according to the leagues.101 volleyball players participated in the study (female=34, male=25 from 1st league; female=21, male=21 from 2ndleague). Isokinetic extension and flexion of knee muscle strengths of the volleyball players were determined withisokinetic dynamometer. Independent t test was used to compare volleyball players' flexor and extensor RPT, H/Qratios and BLD according to their leagues. In the study conducted, it was determined that both male and femalevolleyball players playing the 1st league had higher RPTs at 60°s-1 and 180°s-1 angular velocities. It was determinedthat volleyball players’ BLD was within the desired limits, whereas their H/Q ratios were low. As a result, it wasdetermined that the lower extremity isokinetic knee muscle RPT of the volleyball players playing in the 1st Leaguehad better values than those playing in the 2nd league, but these values were higher in the extension RPT. Since theessential requirement of volleyball is the jumping strength of the movements, this case may be related to the greaterdevelopment of the extensor muscles.

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Section: Introductionmentioning

confidence: 99%

The Comparison of Lower Extremity Isokinetic Strength in Volleyball Players According to the Leagues

Akarçeşme¹,

Aytar²

2018

WJE

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“…One study found that isotonic training with 15% of maximal voluntary isometric contraction (MVC) strength increased muscle size (14), but it is unknown what percentage of 1RM this corresponds to. Similarly, applying blood flow restriction during bodyweight exercises (i.e., lunges and squats) has demonstrated small (15) to no improvements (11) over exercise in the absence of blood flow restriction, but it is once again unknown what percentage of 1RM these bodyweight exercises correspond to or exactly what pressure was applied. Other low-intensity activities, such as walking (2) and cycling (1), have been shown to increase muscle size, illustrating that more studies are needed to examine the efficacy of blood flow restriction when combined with even lower loads (i.e., <20% 1RM).…”

Section: Introductionmentioning

confidence: 99%

Are higher blood flow restriction pressures more beneficial when lower loads are used?

Dankel

et al. 2017

Acta Physiol Hung

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The application of blood flow restriction during low-load resistance exercise has been shown to induce muscle growth with high or low restriction pressures, however, loads lower than 20% one-repetition maximum (1RM) remain unexplored. Fourteen trained individuals completed six elbow flexion protocols involving three different loads (10%, 15%, and 20% 1RM) each of which was performed with either a low (40% arterial occlusion) or high (80% arterial occlusion) pressure. Pre- and post-measurements of surface electromyography (sEMG), isometric torque, and muscle thickness were analyzed. An interaction was present for torque (p < 0.001) and muscle thickness (p < 0.001) illustrating that all increases in pressure and/or load resulted in a greater fatigue and muscle thickness. There was no interaction for sEMG (p = 0.832); however, there were main effects of condition (p = 0.002) and time (p = 0.019) illustrating greater sEMG in the 20% 1RM conditions. Higher blood flow restriction pressures may be more beneficial for muscle growth when very low loads are used.

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“…The deficit range of the quadriceps strength serves as a criterion for an important clinical judgment; a deficit of less than 10% is considered the clinical milestone for returning an athlete back to sports 21 ) . Playing a major role in the quadriceps, the knee extensor muscle controls motion of the lower limbs and serves other important functions 22 , 23 ) such as supporting body weight and maintaining body alignment and stability. Assessment of muscular function provides useful rehabilitation measures for both general people and athletes, and applies readily and safely to restoration of muscle balance, recovery from muscle injury, and rehabilitation 14 , 24 , 25 , 26 ) .…”

Section: Discussionmentioning

confidence: 99%

A study of isokinetic strength and laxity with and without anterior cruciate ligament injury

et al. 2016

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[Purpose] The purpose of this study was to provide useful information for future treatments and to organize rehabilitation programs for anterior cruciate ligament injury by assessing isokinetic muscle strength and laxity of knee joints in athletes with anterior cruciate ligament injuries. [Subjects and Methods] Thirty-one high school athletes with anterior cruciate ligament injuries participated in this study. Isokinetic muscle strength at 60°/sec and anterior cruciate ligament laxity for non-involved and involved sides, classified on the basis of the severity of anterior cruciate ligament injury, were assessed. [Results] A comparison of isokinetic muscle strength measured from the non-involved and involved sides showed a significant difference in the maximum strength and knee flexor muscle strength. For laxity, a significant difference was observed in the anterior drawer test results obtained with a force of 88 N. [Conclusion] In conclusion, this study has shown that the assessment of isokinetic muscle strength and ligament laxity from athletes with anterior cruciate ligament injury should be utilized to provide baseline data for prevention and prediction of injury.

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The effects of bodyweight-based exercise with blood flow restriction on isokinetic knee muscular function and thigh circumference in college students

Cited by 20 publications

References 19 publications

The Comparison of Lower Extremity Isokinetic Strength in Volleyball Players According to the Leagues

The Comparison of Lower Extremity Isokinetic Strength in Volleyball Players According to the Leagues

Are higher blood flow restriction pressures more beneficial when lower loads are used?

A study of isokinetic strength and laxity with and without anterior cruciate ligament injury

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