The Effect of Divided Attention with Bounce Drop Jump on Dynamic Postural Stability

Lin, Jian Zhi; Tai, Wei-Hsun; Chiu, Lan Yi; Lin, Yu An; Lee, Heng-Ju

doi:10.1055/a-1161-9081

Cited by 9 publications

(5 citation statements)

References 41 publications

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“…Also, it provides valuable insights about the player's coordination characteristics, in addition to shedding light on the dynamics of the task [56]. While previous studies have analyzed the influence of performing a dual task during DVJs [25,36,52,57] and in sport-specific variations of jumping tests [58,59] on biomechanical and performance parameters, none of these investigations have evaluated MV under different task constraints. Furthermore, to the authors' knowledge, this is the first study to investigate the effect of adding a sport-specific constraint to a classic DVJ test.…”

Section: Discussionmentioning

confidence: 99%

“…In the second session, participants were instructed to stand on a 30 cm high platform with their hands on their hips, minimizing external interferences. They were then asked to drop vertically and rebound as quickly as possible from initial contact to perform a vertical jump as high as possible [52]. Each participant performed three repetitions of the six different jumps in a randomized sequence (total = 18 jumps), with a recovery time of 60 s between each jump (Figure 3).…”

Section: Data Collectionmentioning

confidence: 99%

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Effect of Ball Inclusion in Drop Vertical Jump Test on Performance and Movement Variability in Basketball Players

González-Millán,

Caparrós,

Toro-Román

et al. 2024

Applied Sciences

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The aim of this study was to assess and compare performance and movement variability (MV) in both bilateral and unilateral vertical drop jumps (DVJs) under conditions involving the incorporation or exclusion of ball catching. Twelve amateur basketball players were recruited for participation in the study (seven females and five males). Participants performed three jumps in each of the six conditions analyzed in randomized order: bilateral DVJ without (BNB) and with ball (BB); unilateral DVJ right leg without (RNB) and with ball (RB); and unilateral DVJ left leg without (LNB) and with ball (LB). MV and DVJ performance parameters were analyzed with an accelerometer and a force platform. MV was quantified using the sample entropy (sample entropy; SampEn) derived from the acceleration of the lower back. Differences between the different DVJ conditions were determined with the Wilcoxon test, with a significance level set at p < 0.05. The comparisons were also assessed via standardized mean differences (Cohen’s d). No significant differences were observed in jump height, contact time and reactive strength index between conditions. However, the RB condition reported higher MV compared to RNB (effect size = 0.79; p = 0.016). Similarly, LNB showed greater MV compared to RNB (effect size = −0.62; p = 0.042). The inclusion of the ball in the DVJ increased the MV in the bilateral condition and in the right leg, but not in the unilateral condition with the left leg. The asymmetry between legs (right vs. left) in MV values in NOBALL conditions was higher (≈15%) compared to the BALL condition (≈5%).

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Section: Discussionmentioning

confidence: 99%

Section: Data Collectionmentioning

confidence: 99%

Effect of Ball Inclusion in Drop Vertical Jump Test on Performance and Movement Variability in Basketball Players

González-Millán,

Caparrós,

Toro-Román

et al. 2024

Applied Sciences

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“…Most studies have investigated the effect of ankle instability on GRF during landing; these studies analyzed the peak vertical GRF [ 36 , 53 , 54 , 55 , 56 , 57 ], peak anterior and posterior GRF [ 36 , 53 ], peak medial and lateral GRF [ 36 , 53 , 57 ], and the time to peak [ 36 , 47 , 53 , 54 , 57 , 58 ]. A consistent finding was that people with ankle instability had a significantly higher peak vertical GRF and a greater difference between the times of landing.…”

Section: The Influence Of Landing Force On Ankle Instabilitymentioning

confidence: 99%

“…The main stimulation stage for the allocation of attention occurs before the performance of a movement until the completion of the movement task. The available time to react refers to the performance result of an immediate reaction movement pattern affected by the attention allocation [ 58 , 70 ]. However, landing tasks are usually unanticipated in most real-world sports scenarios.…”

Section: How Cai Patients Show Postural Control Deficits During Landi...mentioning

confidence: 99%

Influence of Landing in Neuromuscular Control and Ground Reaction Force with Ankle Instability: A Narrative Review

Lin

Tai

2022

Bioengineering

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Ankle sprains are generally the most common injuries that are frequently experienced by competitive athletes. Ankle sprains, which are the main cause of ankle instability, can impair long-term sports performance and cause chronic ankle instability (CAI). Thus, a comprehensive understanding of the key factors involved in repeated ankle strains is necessary. During jumping and landing, adaptation to the landing force and control of neuromuscular activation is crucial in maintaining ankle stability. Ankle mobility provides a buffer during landing, and peroneus longus activation inhibits ankle inversion; together, they can effectively minimize the risk of ankle inversion injuries. Accordingly, this study recommends that ankle mobility should be enhanced through active and passive stretching and muscle recruitment training of the peroneus longus muscles for landing strategies should be performed to improve proprioception, which would in turn prevent ankle sprain and injury to neighboring joints.

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“…Such tasks may affect background postural regulation 9 and result in postural instabilities. 16 , 19 Other potential interfering factors include physically uncertain sporting environments. In team sports such as soccer, basketball, and handball, players sharing limited space with others on the court may induce indirect postural perturbation because of close proximity.…”

mentioning

confidence: 99%

Individual Variation in Adaptive Ability of the Anticipated Postural Stability During a Dual-Task Single-Leg Landing in Female Athletes

Ogasawara

Revankar

Konda

et al. 2023

Orthopaedic Journal of Sports Medicine

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Background: Precise postural control helps prevent anterior cruciate ligament injury. However, it is unknown whether the anticipated postural stability can be improved during a physically uncertain and cognitively demanding task. Hypothesis: Anticipated postural stability will improve through unanticipated single-leg landing with a rapid foot placement target tracking. Study Design: Controlled laboratory study. Methods: A total of 22 healthy female university-level athletes performed a novel dual-task paradigm: an unanticipated single-leg landing with foot placement target tracking. In the normal condition (60 trials), the participants jumped from a 20 cm–high box onto the landing target with their dominant leg as softly as possible. In the subsequent perturbation condition (PC) (60 trials), the initially assigned landing target was abruptly switched randomly, requiring participants to modify their preplanned foot placement position to the newly assigned position. The center-of-pressure trajectory length within the first 100 ms after foot impact (CoP100) was calculated as a measure of anticipated postural stability for each trial. In addition, the peak vertical ground-reaction force (FzPeak) was quantified to assess landing load, and the degree of postural adaptation during PC was quantified by fitting an exponential function to trial-by-trial changes in CoP100. Participants were divided into 2 groups according to increase or decrease in CoP100, and results were compared between the groups. Results: The direction and magnitude of postural sway alterations of the 22 participants showed a spectrum-like variation during the repeated trials. Twelve participants (sway-decreased group) exhibited a gradual reduction in postural sway (CoP100) during the PC, while the remaining 10 participants (sway-increased group) showed a gradual increase in CoP100. The FzPeak during the PC was significantly less in the sway-decreased group compared with the sway-increased group ( P < .05). Conclusion: Variation in the direction and magnitude of postural sway alteration among participants suggested that there was individual variation in an athlete’s adaptive ability of the anticipated postural stability. Clinical Relevance: The novel dual-task paradigm described in this study may be useful for rating individual injury risk based on an athlete’s postural adaptation ability and may aid in targeted prevention strategies.

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The Effect of Divided Attention with Bounce Drop Jump on Dynamic Postural Stability

Cited by 9 publications

References 41 publications

Effect of Ball Inclusion in Drop Vertical Jump Test on Performance and Movement Variability in Basketball Players

Effect of Ball Inclusion in Drop Vertical Jump Test on Performance and Movement Variability in Basketball Players

Influence of Landing in Neuromuscular Control and Ground Reaction Force with Ankle Instability: A Narrative Review

Individual Variation in Adaptive Ability of the Anticipated Postural Stability During a Dual-Task Single-Leg Landing in Female Athletes

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