Effect of Various Warm-Up Protocols on Jump Performance in College Football Players

Pagaduan, Jeffrey; Pojskić, Haris; Užičanin, Edin; Babajić, Fuad

doi:10.2478/v10078-012-0086-5

Cited by 37 publications

(24 citation statements)

References 25 publications

(36 reference statements)

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“…Subjects were tested one by one on the test day, with height and body mass being taken first, before the placement of electromyography (EMG) pads on ten muscles of the subjects' dominant foot. Subsequently, a dynamic warm-up based on a protocol by Pagaduan; Pojskić; Užičanin; Babajić [58] was conducted, consisting of exercises such as butt kicks, carioca, high knees, reverse lunges, straight-leg march, power shuffle and jogging with squats. After the warm-up, the EMG sensors were connected to the pads, while reflecting markers were attached to different anatomical landmarks.…”

Section: Methodsmentioning

confidence: 99%

Relationship of Performance Measures and Muscle Activity between a 180° Change of Direction Task and Different Countermovement Jumps

Falch

Rædergård

Tillaar

2020

Sports

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The ability to rapidly perform change of direction (COD) is crucial for performance in Soccer. COD speed is thought to share similarities with countermovement jumps in kinematics and muscle activation. Thus, the objective of the current study was to investigate the relationship between muscle activities in performance measures of a modified 505-agility test and different countermovement jumps. Twenty-one experienced soccer players performed a COD test including the 505-agility test and uni- and bi-lateral horizontal and vertical countermovement jumps. The main findings were that the vertical bilateral and horizontal unilateral countermovement jump were able to predict total time to complete the COD, but not 505-agility time. Muscle activity in the COD and countermovement jumps was only distinguished by a higher peak muscle activity for the adductor longus, semitendinosus and biceps femoris in the COD to stabilize the hip and decelerate knee joint movements when turning compared with the jumps. Conclusively, the relationship between performance in countermovement jumps and total time to complete the COD test was due to longer sprint distances, which makes the distinction between performances bigger. Peak muscle activity of most muscles is similar between the jumps and the COD step, indicating similar muscular demands between these activities.

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Section: Methodsmentioning

confidence: 99%

Relationship of Performance Measures and Muscle Activity between a 180° Change of Direction Task and Different Countermovement Jumps

Falch

Rædergård

Tillaar

2020

Sports

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“…Each stretching exercise consisted of 2 sets of 20 seconds with a rest interval of 10 seconds between sets. The rest interval between stretching exercises was 10 seconds [24]. The participants performed 3-5 repetitions respectively for SJ, CMJ and CMJarm with emphasis on form.…”

Section: Methodsmentioning

confidence: 99%

Measurement errors when estimating the vertical jump height with flight time using photocell devices: the example of Optojump

Attia¹,

Dhahbi²,

Chaouachi³

et al. 2017

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Common methods to estimate vertical jump height (VJH) are based on the measurements of flight time (FT) or vertical reaction force. This study aimed to assess the measurement errors when estimating the VJH with flight time using photocell devices in comparison with the gold standard jump height measured by a force plate (FP). The second purpose was to determine the intrinsic reliability of the Optojump photoelectric cells in estimating VJH. For this aim, 20 subjects (age: 22.50±1.24 years) performed maximal vertical jumps in three modalities in randomized order: the squat jump (SJ), counter-movement jump (CMJ), and CMJ with arm swing (CMJarm). Each trial was simultaneously recorded by the FP and Optojump devices. High intra-class correlation coefficients (ICCs) for validity (0.98-0.99) and low limits of agreement (less than 1.4 cm) were found; even a systematic difference in jump height was consistently observed between FT and double integration of force methods (-31% to -27%; p<0.001) and a large effect size (Cohen’s d>1.2). Intra-session reliability of Optojump was excellent, with ICCs ranging from 0.98 to 0.99, low coefficients of variation (3.98%), and low standard errors of measurement (0.8 cm). It was concluded that there was a high correlation between the two methods to estimate the vertical jump height, but the FT method cannot replace the gold standard, due to the large systematic bias. According to our results, the equations of each of the three jump modalities were presented in order to obtain a better estimation of the jump height.

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“…Nevertheless, it has been found that exercise with low loads also can create an optimal environment for power production 11 . This improvement in neuromuscular function can occur through the increase of body temperature and the acceleration of metabolism 12 . In this way, although through different mechanisms, the bicycle warm-up at low intensity was also somewhat effective in improving VCMJ.…”

Section: Discussionmentioning

confidence: 99%

Specific warm-up exercise is the best for vertical countermovement jump in young volleyball players

Rezende

Mota

Lopes

et al. 2016

Motriz: rev. educ. fis.

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-We evaluated the effect of performing various distinct warm-up exercises on vertical countermovement jump (VCMJ) performance. Eight volleyball players (age 15.4 ± 0.5 yrs) performed five different warm-up activities (in a counterbalanced, randomized crossover study) over five days, at 24-h intervals: stretching (4 × 30 s, 30 s between sets), cycloergometer (5 min at 50 W + 5 min at 100 W), resistance exercise (leg press 45°, 3 × 5 repetitions maximum, 3-min pause between sets), specific vertical jumping (4 × 10 VCMJ, 2-min pause between sets), and no warm-up at all (control condition). Beginning 3 min after their warm-up, the players performed 3 attempts (at intervals of 3 min) of VCMJ (on a contact carpet), and each player's best jump was considered in the analysis. All warm-up activities presented higher VCMJ performance (p < 0.05) than the control condition, with the exception of stretching. Vertical jumping revealed a large effect size (0.8) than other interventions. We conclude that in practical terms, vertical jumps are the best warm-up exercise (when applied by itself) to acutely improve VCMJ performance in volleyball players, but that other exercises can make a complementary contribution.

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Effect of Various Warm-Up Protocols on Jump Performance in College Football Players

Cited by 37 publications

References 25 publications

Relationship of Performance Measures and Muscle Activity between a 180° Change of Direction Task and Different Countermovement Jumps

Relationship of Performance Measures and Muscle Activity between a 180° Change of Direction Task and Different Countermovement Jumps

Measurement errors when estimating the vertical jump height with flight time using photocell devices: the example of Optojump

Specific warm-up exercise is the best for vertical countermovement jump in young volleyball players

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