Dynamic factors and electromyographic activity in a sprint start

Čoh, Milan; Peharec, Stanislav; Bačić, Petar; Kampmiller, Tomáš

doi:10.5604/20831862.890160

Cited by 21 publications

(13 citation statements)

References 5 publications

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“…In addition to reaction time, the push-off phase duration has also been recognized as an important contributor to the success in sprint races with a shorter time spent on the block being associated with a better sprint performance [ 1 , 29 ]. In the current study, results of both male and female athletes are in line with the values reported in the literature Čoh et al [ 8 , 13 ]. In addition, the shorter push-off times as well as higher horizontal push-off velocities in males are consistent with the finding of Čoh et al [ 8 ].…”

Section: Discussionsupporting

confidence: 93%

“…Since a number of kinematic and kinetic variables have been used to evaluate sprinting block phase performance, the conclusions of those studies were frequently affected by the variable considered (see Bezodis for details; [ 1 ]). Another problem with the sprinting literature is that the block start performance has been generally evaluated through non-standardized custom build laboratory settings [ 8 , 10 , 11 , 12 , 13 ], not allowing the direct comparison of mechanical variables among different studies. Nevertheless, most of these studies agreed that attaining a high horizontal power during the block clearance and the ability to quickly accelerate from block clearance are both critical to optimize sprinting performance [ 8 , 10 , 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

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Gender-Related Differences in Mechanics of the Sprint Start and Sprint Acceleration of Top National-Level Sprinters

Mirkov

Knežević

García-Ramos

et al. 2020

IJERPH

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(1) Background: Within the current study we aimed at exploring gender-related differences and the relationship between sprint start block kinematics and kinetics and sprint acceleration force–velocity (F-v) relationship parameters (maximal force [F0], maximal velocity [v0], maximal power [Pmax] and slope) in top national-level sprinters. (2) Methods: Twenty-eight sprinters (6 females) performed 10 maximal 30-m sprints. Start block and acceleration kinematics and kinetics were collected with an instrumented sprint start block and a laser distance sensor (KiSprint system). Displacement-time data were used to determine the F-v relationship through Samozino’s method. (3) Results: Start block rear foot maximal force (effect size [ES] = 1.08), rate of force development (ES = 0.90–1.33), F0 (ES = 1.38), v0 (ES = 1.83) and Pmax (ES = 1.95) were higher in males than in females (p ≤ 0.05). There were no differences in the slope, and ratio of horizontal-to-resultant force. F0, v0, and Pmax generally presented higher correlations with the start block kinetics (median r [range] = 0.49 [0.28, 0.78]) than with the kinematics (median r [range] = −0.27 [−0.52, 0.28]). (4) Conclusions: We confirmed that sprint block phase and sprint acceleration mechanics should be mutually assessed when analyzing sprinting performance. KiSprint system could provide more accurate information regarding mechanical pattern and technique during sprint initiation and acceleration, and potentially help create a more personalized and effective training program.

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Section: Discussionsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Gender-Related Differences in Mechanics of the Sprint Start and Sprint Acceleration of Top National-Level Sprinters

Mirkov

Knežević

García-Ramos

et al. 2020

IJERPH

View full text Add to dashboard Cite

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“…Both joints (ankle and knee) performed concentric contraction in most of the support phase duration, which is in agreement with other studies (Čoh, Peharec, & Bačić, 2007;Čoh et al, 2009;Kugler & Janshen, 2010;Slawinski et al, 2010). For this purpose, both joints were adjusted to highest rate of flexion at the instant of touch-down.…”

Section: Discussionsupporting

confidence: 77%

“…Effective sprinting requires short contact time (Ciacci, Di Michele, & Merni, 2010;Čoh, Peharec, Bačić, & Kampmiller, 2009), which is associated to high level of ankle joint stiffness defined by triceps surae and tibialis anterior muscles. The acceleration phase needs more concentric explosive strength compared to maximum velocity phase.…”

Section: Introductionmentioning

confidence: 99%

Differences in kinematics of the support limb depends on specific movement tasks of take-off

Hojka¹,

Bačáková²,

Kubový³

2016

Acta Gymnica

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“…Wall, Khabbazeh, Kroker, & Becker, 2012). The largest muscles that contribute to extension of the hip during the block phase are the gluteus maximus and biceps femoris, and both show high electromyographic activity during this phase (Čoh, Peharec, Bačić, & Kampmiller, 2009;Mero & Komi, 1990). The gluteus medius, which is primarily a hip abductor, is also likely to be active to prevent the pelvis dropping on the swing leg side (Wiemann & Tidow, 1995).…”

Section: Discussionmentioning

confidence: 99%

The effect of a reduced first step width on starting block and first stance power and impulses during an athletic sprint start

Sandamas

Gutierrez-Farewik

Arndt

2018

Journal of Sports Sciences

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This study investigated how manipulating first step width affects 3D external force production, centre of mass (CoM) motion and performance in athletic sprinting. Eight male and 2 female competitive sprinters (100m PB: 11.03 ± 0.36 s male and 11.6 ± 0.45 s female) performed 10 maximal effort block starts. External force and three-dimensional kinematics were recorded in both the block and first stance phases. Five trials were performed with the athletes performing their preferred technique (Skating) and five trials with the athletes running inside a 0.3 m lane (Narrow). By reducing step width from a mean of 0.31 ± 0.06 m (Skating) to 0.19 ± 0.03 m (Narrow), reductions were found between the two styles in medial block and medial 1st stance impulses, 1st stance anterior toe-off velocity and mediolateral motion of the CoM. No differences were found in block time, step length, stance time, average net resultant force vector, net anteroposterior impulse nor normalised external power.Step width correlated positively with medial impulse but not with braking nor net anteroposterior impulse. Despite less medially directed forces and less mediolateral motion of the CoM in the Narrow trials, no immediate improvement to performance was found by restricting step width.

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Dynamic factors and electromyographic activity in a sprint start

Cited by 21 publications

References 5 publications

Gender-Related Differences in Mechanics of the Sprint Start and Sprint Acceleration of Top National-Level Sprinters

Gender-Related Differences in Mechanics of the Sprint Start and Sprint Acceleration of Top National-Level Sprinters

Differences in kinematics of the support limb depends on specific movement tasks of take-off

The effect of a reduced first step width on starting block and first stance power and impulses during an athletic sprint start

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