Acute Enhancement of Power Performance From Heavy Load Squats

Young, Warren; Jenner, Andrew; Griffiths, Kerrin

doi:10.1519/00124278-199805000-00004

Cited by 104 publications

(209 citation statements)

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“…Although some authors have shown that the development of maximum strength in the quadriceps can also contribute to increased muscle power assessed by tests without countermovement jump (YOUNG; JENNER; GRIFFITHS, 1998;NAGANO et al, 2005), the results of this study showed that the dynamic maximum force was not correlated with the height reached in Ollie maneuver. Here, it can be speculated that as it involves the action of several joints, performance during the jump depends on many specific independent interrelated variables, such as motor control, intramuscular coordination, strength levels, the degree of muscle power and the execution technique, among others (WEISS et al, 1997).…”

Section: Discussioncontrasting

confidence: 82%

Lower limb force, power and performance in skateboarding: an exploratory study

Candotti

Loss

Silva³

et al. 2012

Rev. Bras. Ciênc. Esporte

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Section: Discussioncontrasting

confidence: 82%

Lower limb force, power and performance in skateboarding: an exploratory study

Candotti

Loss

Silva³

et al. 2012

Rev. Bras. Ciênc. Esporte

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“…In regards to acute power enhancement, several studies suggest that performance is increased after different protocols of muscle potentiation [9,10]. This increase of acute power output has been related to post--activation potentiation (PAP) [11,12].…”

Section: Introductionmentioning

confidence: 99%

“…Masamoto et al [22] observed that one repetition maximum (1RM) performance was increased (by 3.5%) in trained athletes when executed 30 s after one set of two depth jumps. Young et al [10] reported that a single set of 5 maximal repetitions of squats increased countermovement jump height (by 2.8%) when performed 4 min later in athletes experien ced with squat exercise. Kilduff et al [23] also found an improvement in countermovement jump performance (by 4.9%), determined after 8 min (post 8 min) of squat potentiation protocol (three sets of 3 repetitions at 87% 1RM).…”

Section: Introductionmentioning

confidence: 99%

Acute Effects of Drop Jump Potentiation Protocol on Sprint and Countermovement Vertical Jump Performance

Lima¹,

Marin²,

Barquilha³

et al. 2011

Human Movement

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Purpose. Muscle post-activation potentiation (PAP) is a mechanism by which power twitch is increased after previous conditioning contractions. In this study, we determined the time-dependent effect of a loaded drop-jump protocol on sprint time and countermovement jump height in well-trained athletes. Methods. Ten athletes randomly performed the control and experimental protocols on two different days. As a pre-test, the athletes performed the vertical jump and 50 m sprint test for preload measurements. Then, the experimental or control protocol was randomly applied, where the control protocol was composed of the athletes remaining at rest for 10 min. In the experimental protocol, the athletes performed two sets of 5 drop jumps (0.75 m), with a 15 s interval between the jumps and a 3 min rest after each set. Then the vertical jump and 50 m sprint tests were performed again 5, 10, and 15 min after the protocol. Results. The experimental condition (drop jump potentiation protocol) increased performance in the vertical jump by 6% after 15 min (p < 0.01) and in the sprint by 2.4% and 2.7% after 10 and 15 min, respectively (p < 0.05). Conclusions. These findings suggest that the drop jump potentiation protocol increases countermovement vertical jump and sprint performance in high-performance athletes at different times, suggesting that PAP induction depends not only on the design of the protocol, but also on the effect of time and the type of exercise involved.

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“…Many researchers (Gullich and Schmidtbleicher, 1996;Gourgoulis et al, 2003;Young et al, 1998) reported that warm-ups of maximal isometric contraction and maximal or high-intensity dynamic exercise can enhance dynamic muscle performances such as jump height. The disagreement of our study and the above previous studies may be due to differences in the following two points.…”

Section: Discussionmentioning

confidence: 99%

“…Increasing muscle temperature results in improved muscle function and resilience of soft tissues (Yamamoto and Yamamoto, 1993). Previous studies have clarified that prior maximal voluntary isometric contractions (Gullich and Schmidtbleicher, 1996) and submaximal high-intensity contractions (2 repetitions of 20-90% of the 1 repetition maximum (1RM) load (Gourgoulis et al, 2003), 5 repetitions of 5RM intensity (Young et al, 1998)) can increase the rate of force development and jump height during repeated countermovement jumps and drop jumps (Gullich and Schmidtbleicher, 1996).…”

Section: Introductionmentioning

confidence: 99%

Effect of Linear Polarized Near-infrared Light Irradiation and Light Exercise on Muscle Performance

Demura

Aoki

et al. 2011

J Physiol Anthropol

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This study aimed to determine the effect of active warm-up by local muscle light exercise and passive warm-up by polarized light irradiation on skin and muscle temperatures and forearm muscle performance (muscle strength, power, endurance, and controlled force-exertion). Ten healthy males performed various grip tests before and after active (local muscle light exercise) and passive (linear polarized nearinfrared light irradiation) warm-ups. An active warm-up involved intermittent gripping exercise (contraction: 1 second and relaxation: 1 second) for 10 minutes using a sponge. A passive warm-up consisted of polarized light irradiation to the forearm (superficial digital flexor) for 10 minutes (irradiation: 5 seconds and rest: 1 second). Skin and muscle temperatures were measured during both warm-ups. Skin and muscle temperatures increased significantly after 5 minutes of local muscle light exercise and after 10 minutes of polarized light irradiation. Temperatures were significantly higher after 6 minutes of local muscle light exercise than after 6 minutes of polarized light irradiation. There were no significant differences of muscle strength, power, and controlled forceexertion before and after either warm-up. Average force outputs in all conditions significantly decreased with exertion time, and at 30, 60, 90, and 120 seconds they were higher in both warm-up conditions than in the non-warm-up condition. In conclusion, both warm-ups may contribute to improve muscle endurance performance in the decreasing force phase.

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Acute Enhancement of Power Performance From Heavy Load Squats

Cited by 104 publications

References 0 publications

Lower limb force, power and performance in skateboarding: an exploratory study

Lower limb force, power and performance in skateboarding: an exploratory study

Acute Effects of Drop Jump Potentiation Protocol on Sprint and Countermovement Vertical Jump Performance

Effect of Linear Polarized Near-infrared Light Irradiation and Light Exercise on Muscle Performance

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