A Systematic Review and Meta-Analysis on the Longitudinal Effects of Unilateral Knee Extension Exercise on Muscle Strength

Altan, Ekin; Seide, Svenja Elizabeth; Bayram, Ismail; Gizzi, Leonardo; Ertan, Hayri; Röhrle, Oliver

doi:10.3389/fspor.2020.518148

Cited by 3 publications

(3 citation statements)

References 131 publications

(237 reference statements)

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“…Isometrics have enjoyed a resurgence in popularity in recent times, this being attributed to many reasons: 1) isometric assessments are typically easy to administer, safe and a more time-efficient method to measure maximal strength than traditional 1RM testing [2]; 2) it's a reliable way to test maximal strength and peak force in youth and adult athletes [3]; 3) some of the performance variables from isometric assessments have been shown to significantly correlate to athletic movements such as the vertical jump and sprint speed [4]; 4) isometrics can be performed at multiple angles and can be used to train 'weak points/sticking regions' [5]; 5) isometrics can provide variability to your programming; 6) in some activities or sports, isometric strength is key to performance e.g. isometric core strength of sprinters to combat angular momentum of the limbs; 7) isometric contractions results in less fatigue compared with high intensity concentric contractions; 8) produces less stress on the body, due to lower impact forces, reducing injury risk [6]; (9) isometrics as a training method can be used in training programs to develop strength, power, muscle size and tendon stiffness; 10) one of the greatest benefits is its accessibility, being that it can take place anywhere at any time, whether sitting in a plane or working out in a gym and, 11) effectively improves one's strength after injury whilst minimizing pain and risk of reinjury [7].…”

Section: Introductionmentioning

confidence: 99%

Strain Gauge Integration in the Assessment and Rehabilitation of Knee Osteoarthritis

Lane¹,

Rumpf²,

Pryer³

et al. 2023

Preprint

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Isometric exercises for physiotherapeutic rehabilitation are often prescribed, with little quantification of the load being prescribed. This article aimed to provide a framework and practical examples of how the physiotherapist may take a more quantitative evidence-based approach to isometric assessment, monitoring, and exercise prescription of knee osteoarthritis, by integrating a strain gauge into their practice. Strength measures to monitor were discussed. A series of fourteen studies were reviewed, with the intent of identifying isometric exercises that had been utilized in the rehabilitation of knee osteoarthritis. Of the fourteen studies, the three most identified isometric exercises were seated knee extension, knee flexion, and the supine straight leg raise. The integration of strain gauge technology with these exercises provided the focus of the remainder of the article.

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Section: Introductionmentioning

confidence: 99%

Strain Gauge Integration in the Assessment and Rehabilitation of Knee Osteoarthritis

Lane¹,

Rumpf²,

Pryer³

et al. 2023

Preprint

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“…Contrary to localized PAPE, little is known about the possibility to obtain a nonlocalized PAPE on muscles that were not involved in the resistance exercise protocol. Despite several studies demonstrating that a cross-education may be produced by unilateral resistance training (3), Andrews et al (4) reported that a single-leg squat protocol, performed with the dominant leg, did not elicit any improvement in the power performance of the contralateral leg. To the best of our knowledge, only Cuenca-Fernández et al (17) have investigated the existence of a nonlocalized PAPE between the upper and lower body.…”

Section: Introductionmentioning

confidence: 99%

May a Nonlocalized Postactivation Performance Enhancement Exist Between the Upper and Lower Body in Trained Men?

Bartolomei

Luca

Marcora

2022

Journal of Strength and Conditioning Research

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Bartolomei, S, De Luca, R, and Marcora, SM. May a nonlocalized postactivation performance enhancement exist between the upper and lower body in trained men? J Strength Cond Res 37(1): 68–73, 2023—The aim of this study was to establish whether a resistance exercise for the upper body may generate a postactivation performance enhancement (PAPE) in the lower body. Thirteen resistance-trained men (age = 26.4 ± 3.3 years, body mass = 76.9 ± 6.3 kg, and height = 177.6 ± 5.2 cm) participated in the present investigation and were tested for upper-body and lower-body power (bench press throw and countermovement jump power [CMJP] tests). Subjects were also tested for maximum force and electromyographic (EMG) activation of quadriceps muscles while performing an isometric leg extension. All assessments were performed before and 8 minutes after a high-intensity (HI: 5 sets of 1 rep at 90% of 1 repetition maximum [1RM]) bench press protocol, a high-power protocol (POW: 5 sets of 1 rep at 30% of 1RM with maximum explosive intent), and a control trial (CON). Subjects performed all trials in a randomized order and on different days. A significant trial × time interaction was detected for CMJP (p = 0.049). This parameter was significantly increased following the HI protocol only (p = 0.024). A significant interaction was also noted for EMG with a significant improvement following the HI protocol (p = 0.032) and a significant decrease following the POW protocol (p = 0.020). No other significant effects were detected (p > 0.05). The results of this investigation indicate that a HI bench press protocol may produce a PAPE in the lower-body power and increase the neuromuscular activation of leg extensor muscles. The POW bench press protocol did not show any positive effects on lower-body performance. Athletes and practitioners may take advantage from the inclusion of upper-body HI resistance exercises throughout complex resistance workouts to improve lower-body power output.

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“…(1) no specific potentiating warmup (control); (2) a traditional plyometric warmup (3) a short duration (15s) isometric lunge hold; and (4) a long duration isometric lunge hold (30s). The selection of the isometric split squat and the protocols were chosen for its practical application and support from the research observing the effects on unilateral isometric knee extension exercise (UIKEE) (Altan et al, 2020& Place et al, 2005. It has been observed that the use of UIKEE has positive effects on strength within four weeks of training as well as supporting tendon quality of the lower limbs.…”

Section: Future Researchmentioning

confidence: 99%

Comparing long- and short-duration submaximal isometric contractions to plyometrics as performance potentiators for sprinting

Hunn

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This study aimed to identify differences in sprint performance outcomes when comparing sustained isometric contractions to plyometric exercise and a non-dynamic warmup. The sample observed were from female collegiate basketball, soccer, and volleyball athletes with prior strength and sprint training experience (n = 8). Over the course of four randomized sessions, the participants performed a non-dynamic control protocol (Con), a plyometric protocol (Plyo), a short duration (10s) lower body isometric protocol (SDI), and a long duration (30s) lower body isometric contraction protocol (LDI). Three sprint trials were performed at one-, five-, and 10minutes post-potentiation protocol. Three hypotheses were made given the protocols: (H1) The submaximal isometric contractions in the lower body would be equal to plyometric exercises as a potentiation tool for 20-meter sprint performance (H2) a longer submaximal contraction (:30) would be superior to the shorter duration isometric contraction (:10) for 20-meter sprint performance (H3) both isometric contraction protocols would be superior to a control warm up that does not include any plyometric or heavy strength stimulus. It was found that there was a significant effect noted for the protocols used in the study [F(3, 21) = 3.99, p = 0.021, partial η 2 = 0.36]. However, no significant effect was found between the different levels of the rest intervals, and no interaction was present between protocol and rest. Additionally, no significant difference

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A Systematic Review and Meta-Analysis on the Longitudinal Effects of Unilateral Knee Extension Exercise on Muscle Strength

Cited by 3 publications

References 131 publications

Strain Gauge Integration in the Assessment and Rehabilitation of Knee Osteoarthritis

Strain Gauge Integration in the Assessment and Rehabilitation of Knee Osteoarthritis

May a Nonlocalized Postactivation Performance Enhancement Exist Between the Upper and Lower Body in Trained Men?

Comparing long- and short-duration submaximal isometric contractions to plyometrics as performance potentiators for sprinting

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