Identification of critical traction values for maximum athletic performance

Luo, Geng; Stefanyshyn, Darren J.

doi:10.1080/19424280.2011.639807

Cited by 51 publications

(49 citation statements)

References 24 publications

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“…These results highlighted that outsole design of futsal shoes has a substantial impact on its traction properties. In particular, critical traction coefficients of the multi-studded outsole design (1.26 for FTT; 2.10 for STT) were distinctively higher compared to the values previously reported for athletic performances (around 0.82) [12]. This finding might partially explain a higher risk of injury of futsal compared to soccer [3].…”

Section: Discussionmentioning

confidence: 36%

“…Despite the very little information in previous reports relating to futsal shoe traction aspect [9], there have been several previous studies which quantified the traction coefficient between the shoe outsole-playing surface in soccer and other sports [10][11][12]. They reported critical traction coefficient for maximum athletic performance was around 0.82 [12].…”

Section: Introductionmentioning

confidence: 96%

“…They reported critical traction coefficient for maximum athletic performance was around 0.82 [12]. One previous study, which compared the shoe-surface traction on few different futsal playing surfaces during cutting task, reported that the translational traction coefficient ranges between 0.17 and 0.22 [9].…”

Section: Introductionmentioning

confidence: 99%

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Measurement of Interaction between Futsal Footwear and Futsal Pitch Surface under Different Outsole Condition

Ismail

Nunome

Marzuki

et al. 2018

The 12th Conference of the International Sports Engineering Association

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Abstract:The interaction between footwear and the pitch surface is an important aspect for successful performance and injury prevention in futsal. We aimed to investigate shoe-surface interaction of non-marking and multi-studded outsole designs. Five university players were recruited to perform two futsal specific movements (front translational traction-FTT and side translational traction-STT). A motion capture system including an embedded force plate covered by a synthetic material for futsal pitch, were utilized to collect the ground reaction force components. During FTT and STT, the multi-studded outsole was characterized by significantly higher mean peak traction forces. Moreover, although there were no significant differences in peak coefficient of traction between the two types of futsal shoes during STT, the multi-studded outsole tended to produce marginally higher peak coefficient of traction during FTT. It can be concluded that the multi-studded outsole design is prone to generate higher traction force and coefficient of traction.

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Section: Discussionmentioning

confidence: 36%

Section: Introductionmentioning

confidence: 96%

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Measurement of Interaction between Futsal Footwear and Futsal Pitch Surface under Different Outsole Condition

Ismail

Nunome

Marzuki

et al. 2018

The 12th Conference of the International Sports Engineering Association

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“…The available traction quantified under this protocol was a traction coefficient of 1.13. It has been shown that beyond a traction coefficient of 0.82, available traction no longer constrains sprinting performance along a curve of 2.3m radius (Luo and Stefanyshyn, 2011). The footwear outsole was cleaned between trials and the laboratory floor was cleaned between conditions.…”

Section: Set-up and Equipmentsmentioning

confidence: 99%

“…To prevent any confounding effects caused by differences in shoe-ground traction, all subjects used the same pair of athletic shoes (model Yushuai IV, Li Ning Company, Beijing, China) that provided sufficiently high available traction on the laboratory floor. Mechanical traction tests of the current shoe-floor interface were conducted using a previously validated protocol (Luo and Stefanyshyn, 2011). The available traction quantified under this protocol was a traction coefficient of 1.13.…”

Section: Set-up and Equipmentsmentioning

confidence: 99%

Limb force and non-sagittal plane joint moments during maximum-effort curve sprint running in humans

Luo

Stefanyshyn

2012

Journal of Experimental Biology

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SUMMARYCompared with running straight, when human runners sprint along a curve, the ability of the inside leg to generate force is compromised. This decreased force generation has been suggested to limit the overall performance of the runner. One theory for this force loss is that the large non-sagittal plane joint moments of the inside leg reach their operating limits, thus prohibiting further generation of the performance-related sagittal plane joint moments. We investigated the inside leg force generation and the ankle and knee joint moments when 13 subjects sprinted with and without an additional mass of 12.4kg along a curve of 2.5m radius. The increase in the subjectsʼ mass evoked a significant increase in the resultant ground reaction force. The peak nonsagittal plane moments increased significantly for both the ankle and knee joints. This observation suggests that when sprinting normally with maximum effort, the non-sagittal plane joint moments are not operating at their limits. The large increases in ground reaction force were associated with greater extension moments generated at the knee joint. In contrast, the peak ankle plantarflexion moment remained unchanged across conditions. It is possible that for the specific joint configuration experienced, the overall ability to generate plantarflexion moment reaches the limit. Future studies with interventions increasing the ability of the muscle-tendon units to generate plantarflexion moment may provide an experimental opportunity to further examine this speculation.

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Traction forces generated during studded boot‐surface interactions on third‐generation artificial turf: A novel mechanistic perspective

Forrester

Fleming

2019

Engineering Reports

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The traction forces generated during studded boot‐surface interactions affect player performance and injury risk. Over 20 years of empirical research into traction on third‐generation (3G) artificial turf has met with only limited success in supporting the development of safer surfaces and boots. Thus, the purpose of this perspective article is to present a conceptual framework for generating scientific understanding on 3G turf traction through a novel mechanistic approach. A three‐stage framework is proposed. Firstly, the hypothesized traction mechanisms and related analytical equations are identified, namely, friction between the boot outsole and surface; shear resistance of the performance infill layer to the outsole; and compressive resistance of the performance infill layer to horizontal stud displacement. Secondly, a Concept Map is generated to visually represent the contribution of the 39 variables identified as directly affecting the traction response. Finally, a Research Roadmap is constructed to guide the direction of future traction studies toward the development of safer surfaces and boots as well as improved mechanical tests to assess surface safety. The proposed framework represents the first attempt to deconstruct boot‐surface interactions and hypothesize the science behind the mobilization of traction forces.

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Identification of critical traction values for maximum athletic performance

Cited by 51 publications

References 24 publications

Measurement of Interaction between Futsal Footwear and Futsal Pitch Surface under Different Outsole Condition

Measurement of Interaction between Futsal Footwear and Futsal Pitch Surface under Different Outsole Condition

Limb force and non-sagittal plane joint moments during maximum-effort curve sprint running in humans

Traction forces generated during studded boot‐surface interactions on third‐generation artificial turf: A novel mechanistic perspective

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