Acute Effects of Eccentric Overload on Concentric Front Squat Performance

Munger, Cameron N.; Archer, David C.; Leyva, Whitney D.; Wong, Megan A.; Coburn, Jared W.; Costa, Pablo B.; Brown, Lee E.

doi:10.1519/jsc.0000000000001825

Cited by 21 publications

(29 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Concentric intensity for all load conditions was 80% 1RM [ 22 ]. Accentuated eccentric loading totaled 105% of 1RM [ 8 , 22 , 23 ] and was applied to prescribed repetitions via weight releasers (Monster Grips, Columbus, OH, USA) [ 12 , 23 , 24 ]. Subjects were strongly verbally encouraged in the same manner during each session to perform the concentric phase of the squat as explosively as possible.…”

Section: Methodsmentioning

confidence: 99%

“…Accentuated eccentric loading has been explored in several studies using both upper [ 8 , 9 , 10 , 11 ] and lower body [ 10 , 11 , 12 ] exercises. AEL has demonstrated positive effects on concentric performance compared to traditional loading patterns [ 8 , 12 ] though not all studies agree [ 9 , 10 , 11 ]. The inconsistent nature of the existing evidence may be largely due to the discrepancy in both eccentric and concentric loading, means of application, and exercise selection among other confounders.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Repetition-to-Repetition Differences Using Cluster and Accentuated Eccentric Loading in the Back Squat

Wagle

Taber

Carroll

et al. 2018

Sports

View full text Add to dashboard Cite

The current investigation was an examination of the repetition-to-repetition magnitudes and changes in kinetic and kinematic characteristics of the back squat using accentuated eccentric loading (AEL) and cluster sets. Trained male subjects (age = 26.1 ± 4.1 years, height = 183.5 ± 4.3 cm, body mass = 92.5 ± 10.5 kg, back squat to body mass ratio = 1.8 ± 0.3) completed four load condition sessions, each consisting of three sets of five repetitions of either traditionally loaded straight sets (TL), traditionally loaded cluster sets (TLC), AEL cluster sets (AEC), and AEL straight sets where only the initial repetition had eccentric overload (AEL1). Eccentric overload was applied using weight releasers, creating a total eccentric load equivalent to 105% of concentric one repetition maximum (1RM). Concentric load was 80% 1RM for all load conditions. Using straight sets (TL and AEL1) tended to decrease peak power (PP) (d = −1.90 to −0.76), concentric rate of force development (RFDCON) (d = −1.59 to −0.27), and average velocity (MV) (d = −3.91 to −1.29), with moderate decreases in MV using cluster sets (d = −0.81 to −0.62). Greater magnitude eccentric rate of force development (RFDECC) was observed using AEC at repetition three (R3) and five (R5) compared to all load conditions (d = 0.21–0.65). Large within-condition changes in RFDECC from repetition one to repetition three (∆REP1–3) were present using AEL1 (d = 1.51), demonstrating that RFDECC remained elevated for at least three repetitions despite overload only present on the initial repetition. Overall, cluster sets appear to permit higher magnitude and improved maintenance of concentric outputs throughout a set. Eccentric overload with the loading protocol used in the current study does not appear to potentiate concentric output regardless of set configuration but may cause greater RFDECC compared to traditional loading.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Repetition-to-Repetition Differences Using Cluster and Accentuated Eccentric Loading in the Back Squat

Wagle

Taber

Carroll

et al. 2018

Sports

View full text Add to dashboard Cite

show abstract

“…To ensure proper performance of the squat exercise, the physiotherapist who controlled the interventions told the athlete when he was parallel to the oor, to ensure thigh-level depth of the squat, parallel to the oor for all repetitions [27]. For the lunge exercise, the player was standing with feet hip-width apart, taking a large step forward with one leg, moving the weight forward, with the heel on the oor, and lowering the body until the thigh is parallel to the ground and the opposite leg perpendicular.…”

Section: Methodsmentioning

confidence: 99%

Improvement of Mobility, Strength, Stability and Pain in Soccer Players with Recurrent Ankle Sprains Through Myofascial Release, Strength Exercises and Taping: A Randomized Controlled Trial.

Allois¹,

Niglia²,

Pernice³

et al. 2020

Preprint

View full text Add to dashboard Cite

Background. Recurrent ankle sprains are common in soccer players, characterized by restricted range of motion, pain, and decreased proprioception, strength, and postural control. Methods. In this randomized controlled trial over 4 weeks, 36 recreationally active male football players randomly to experimental group (myofascial release applied to the subastragaline joint, eccentric training with an isoinertial device and neuromuscular taping) or control group (same intervention without neuromuscular taping). Outcomes measures were range of motion, strength, stability and perceived pain in the ankle joint. The within-subject effect and group interaction were obtained by means of a repeated measures ANOVA.Results. We found significant differences in range of motion in dorsiflexion (p < 0.001; η2p = 0.31) and plantar flexion (p < 0.01; η2p = 0.23). We also found differences depending on the moment in the strength in dorsiflexion (p = 0.001; η2p = 0.19) and plantar flexion (p < 0.001; η2p = 0.29) and in the intra-subject effect in the variables perceived pain (p = 0.03; η2p = 0.11) and the mean anteroposterior and mid-lateral velocity with eyes open (p < 0.001; η2p = 0.25). No significant changes in group interaction were found in any of the variables (p > 0.05).Conclusion. The combination of fascial therapy and eccentric strength training with an isoinertial device improves ankle mobility, strength and stability in footballers with recurrent ankle sprains. The use of taping techniques failed to provide a greater improvement of the study variables when combined with manual therapy and strength techniques.Trial Registration Number: www.clinicaltrials.gov (id: NCT04257916; Date of registration: 2nd, April, 2020).

show abstract

“…However, vertical displacement depreciation occurred less during CMJs when preceded with hang cleans compared to back squat or CMJs-only. While Munger et al [12] did not utilize cleans as the conditioning or main activity, eccentric overloaded squats were recommended as a supplementary tool for cleans since the front squat is a precursor for the movement.…”

Section: Similarities and Dissimilarities With Previous Researchmentioning

confidence: 99%

Acute Post-Activation Potentiation Effects of Heavy High-Pulls on Clean Performance

Straughn

Dake

Cosío-Lima

et al. 2019

J. of SCI. IN SPORT AND EXERCISE

Self Cite

View full text Add to dashboard Cite

Aim The concept of post-activation potentiation (PAP) is still novel from a training perspective and lacks breadth relative to weightlifting exercises. Purpose The purpose of this study was to investigate the acute effects of a conditioning activity (clean high pulls) on the performance of a main activity (clean) after the conditioning activity. Methods Eleven volunteers who engaged in weightlifting (Male = 5, Female = 6) participated in two different testing sessions (experimental vs. control). Baseline measurements were taken following the warm-up. The testing condition was performed and additional measurements were taken at 30 s, 2 min, 4 min, 6 min, 8 min, 10 min, and 12 min into recovery. A linear position transducer was used to collect peak power, peak velocity, and displacement of the barbell during the clean. Multiple 2 × 8 repeated measures ANOVAs were used to analyze the data along with a paired samples t test between baseline and "best" values. Results There was no interaction or main effect for condition (P > 0.05). However, there was a significant main effect for time (P < 0.05) for all variables. The "best" values were significantly (P < 0.05) greater than baseline values (peak power: experimental = 1354.76 ± 521.24 W vs. baseline 1216.03 ± 492.30 W; peak velocity: experimental = 2.66 ± 0.44 m/s vs. baseline 2.50 ± 0.44 m/s; displacement: experimental = 111.07 ± 12.09 cm vs. baseline 107.01 ± 11.32 cm). Conclusions The findings of this study are in partial agreement with previous literature where the warm-up was probably enough to elicit PAP. Therefore, recommendations for future studies could include utilizing a more elite population and to ensure all potential participants can squat at least 2 × their body weight.

show abstract

Acute Effects of Eccentric Overload on Concentric Front Squat Performance

Cited by 21 publications

References 28 publications

Repetition-to-Repetition Differences Using Cluster and Accentuated Eccentric Loading in the Back Squat

Repetition-to-Repetition Differences Using Cluster and Accentuated Eccentric Loading in the Back Squat

Improvement of Mobility, Strength, Stability and Pain in Soccer Players with Recurrent Ankle Sprains Through Myofascial Release, Strength Exercises and Taping: A Randomized Controlled Trial.

Acute Post-Activation Potentiation Effects of Heavy High-Pulls on Clean Performance

Contact Info

Product

Resources

About