Changes in Bar-Path Kinematics and Kinetics After Power-Clean Training

Winchester, Jason B.; Erickson, Travis M.; Blaak, John B.; McBride, Jeffrey M.

doi:10.1519/00124278-200502000-00030

Cited by 14 publications

(34 citation statements)

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“…Maximal dynamic strength of the lower body was assessed through a squat 1RM test. A 1RM was estimated for each subject based on body weight and training experience, with the subject then performing a series of warm-up sets and several maximal lift attempts until a 1RM was obtained (Winchester et al, 2005). During a 20 min recovery period, anthropometric measures (height, weight, and body composition-three-site skin fold: chest, abdomen, thigh) were assessed.…”

Section: Testing Proceduresmentioning

confidence: 99%

Power-Time, Force-Time, and Velocity-Time Curve Analysis during the Jump Squat: Impact of Load

Cormie

McBride

McCaulley

2008

Journal of Applied Biomechanics

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104

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The purpose of this investigation was to examine the impact of load on the power-, force- and velocity-time curves during the jump squat. The analysis of these curves for the entire movement at a sampling frequency of 200–500 Hz averaged across 18 untrained male subjects is the most novel aspect of this study. Jump squat performance was assessed in a randomized fashion across five different external loads: 0, 20, 40, 60, and 80 kg (equivalent to 0 ± 0, 18 ± 4, 37 ± 8, 55 ± 12, 74 ± 15% of 1RM, respectively). The 0-kg loading condition (i.e., body mass only) was the load that maximized peak power output, displaying a significantly (p≤ .05) greater value than the 40, 60, and 80 kg loads. The shape of the force-, power-, and velocity-time curves changed significantly as the load applied to the jump squat increased. There was a significantly greater rate of power development in the 0 kg load in comparison with all other loads examined. As the first comprehensive illustration of how the entire power-, force-, and velocity-time curves change across various loading conditions, this study provides extensive evidence that a load equaling an individuals body mass (i.e., external load = 0 kg) maximizes power output in untrained individuals during the jump squat.

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Section: Testing Proceduresmentioning

confidence: 99%

Power-Time, Force-Time, and Velocity-Time Curve Analysis during the Jump Squat: Impact of Load

Cormie

McBride

McCaulley

2008

Journal of Applied Biomechanics

Self Cite

104

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“…have demonstrated a relationship between barbell kinematics and successful attempts during weightlifting competition in the snatch. In addition, Winchester, Erickson, Blaak, and McBride (2005) have shown that changes in certain bar path variables in training were associated with increased power output in the power clean (Winchester et al, 2005). Therefore, it appears displacement of the barbell is of importance during weightlifting movements in terms of maximising power output, which is a common goal in the utilization of the power clean in training for improvements in power for athletic performance.…”

Section: Introductionmentioning

confidence: 99%

“…Numerous studies have evaluated technique in the weightlifting movements during single repetition efforts primarily in the snatch (Baumann, Gross, Quade, Galbierz, & Schwirtz, 1988;Burdett, 1982;Canavan, Garret, & Armstrong, 1996;Frolov, Lellikov, Efimov, & Vanagas, 1979;Isaka, Okada, & Funato, 1996). The most common variables that have been identified have been labelled as DxL, DxT, Dx2 and DxV (Stone et al, 1998;Winchester et al, 2005;Winchester, Porter, McBride, 2009). The first variable is the difference between the most forward position during the second pull and the catch position (DxL).…”

Section: Introductionmentioning

confidence: 99%

“…The final variable is the difference between the beginning of the second pull and the most forward position during the second pull (DxV). A representative figure of the horizontal displacement variables has been previously published and discussed elsewhere (Stone et al, 1998;Winchester et al, 2005;Winchester et al, 2009). Stone et al (1998) proposed in the snatch that backward movement of the barbell was typically associated with a successful attempt.…”

Section: Introductionmentioning

confidence: 99%

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Effect of cluster set configurations on power clean technique

Hardee

Lawrence

Zwetsloot

et al. 2013

Journal of Sports Sciences

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The purpose of this investigation was to examine the effects of cluster set configurations on power clean technique. Ten male, recreational weightlifters performed three sets of six repetitions at 80% of one repetition max with 0 (P0), 20 (P20) or 40 seconds (P40) inter-repetition rest. During the first and second set of P0, the catch and first pull were in a more forward position during repetition 6 as compared to repetition 1, respectively. During the second set of P40, differences in horizontal displacement were found between repetitions 1 and 6 for the second pull and the loop. During the third set of P40, differences in horizontal displacement were found between repetitions 1 and 6 for the first pull, transition, and beginning of the second pull. No differences in horizontal displacement were found between repetitions 1 and 6 during P20. During each set of P0, vertical displacement decreased between repetitions 1 and 6 (1.02 ± 0.07 m vs. 0.94 ± 0.06 m; Mean ± s). Cluster set configurations led to the maintenance of vertical displacement throughout all sets. The results demonstrate cluster set configurations with greater than 20 seconds inter-repetition rest maintain weightlifting technique to a greater extent than a traditional set configuration.

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“…Olympic weightlifter). Furthermore, research has shown that improvements in kinematic variables due to combined feedback methods result in improved kinetic variables such as force and power in the power snatch (87) and power clean (86). Therefore, although video feedback may help a coach provide feedback, a coach must have the methodological knowledge of movement and be able to explain it to a young athlete in everyday terms.…”

Section: Providing Valuable Feedbackmentioning

confidence: 99%

Integrating Resistance Training Into High School Curriculum

Pichardo

Oliver

Harrison

et al. 2019

Strength &Amp; Conditioning Journal

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Resistance training for youth athletes is becoming increasingly common. Integrating a periodized resistance training program into school curriculum can help develop athleticism for all youth. This article aims to provide an overview of a resistance training program used in a New Zealand secondary school. Provided is an insight into the levels of planning for an effective athletic development program. Properly sequenced training blocks are essential in achieving long-term success. Additionally, coaches must be sufficiently certified and qualified to work with youth, which includes tailoring approaches to varying levels of skill and providing effective feedback.

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Changes in Bar-Path Kinematics and Kinetics After Power-Clean Training

Cited by 14 publications

References 0 publications

Power-Time, Force-Time, and Velocity-Time Curve Analysis during the Jump Squat: Impact of Load

Power-Time, Force-Time, and Velocity-Time Curve Analysis during the Jump Squat: Impact of Load

Effect of cluster set configurations on power clean technique

Integrating Resistance Training Into High School Curriculum

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