Cervical Strength Training Does Not Enhance Dynamic Stabilization of Head and Neck During Football Tackling

Lisman, Peter; Signorile, Joseph F.; Rossi, Gianluca Del; Asfour, Shihab; Abdelrahman, Khaled Zakaria; Eltoukhy, Moataz; Stambolian, Damon; Jacobs, Kevin A.

doi:10.1249/01.mss.0000385895.27611.c8

Cited by 6 publications

(13 citation statements)

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“…Exercises aiming at neuromuscular stability might have made at least some contribution to reducing the total, trunk, and head PLA after purposeful headers. Another reason for the beneficial effects on strength and PLA outcomes in our trial, which are in contrast to results reported by Becker et al (4) on a strengthening intervention in 20-year-old male soccer players, as well as in contrast to studies by Lisman et al (25) and Mansell et al (26) regarding PLA, could be the length of our training program. We implemented an intervention with a length of 14 weeks, as opposed to 6 weeks (4) or 8 weeks (25,26) in the above mentioned trials, which increases chances for neuromuscular adaptations that might help mitigating PLA (16).…”

Section: Discussioncontrasting

confidence: 99%

“…Effects on cervical strength are comparable with those reported in recent studies targeting neck strength in adolescent soccer athletes (39) and in football players aged 18–23 years (38). Similar to previous studies on the effects of cervical strength training programs on head kinematics after force application (14,26) or an American football tackle (25), but contrary to a 6-week strength training of neck flexors and extensors (4), we found beneficial effects on all strength variables that were superior to any changes observed in controls with the exception of lateral flexion asymmetry and CROM. Moreover, our results indicate that the kinematic response after purposeful headers showed a substantial reduction that affected total, trunk, and head PLA.…”

Section: Discussionsupporting

confidence: 88%

“…Hence, it might have failed to address the feed-forward and feedback motor control mechanisms necessary for dynamic stabilization. The same applies to a study conducted by Lisman et al in which 16 men with high-school football experience underwent a progressive resistance exercise intervention using a Pro 4-way neck machine (25). They found increases in cervical extension and lateral flexion of 7 and 10%, respectively, but no effects on PLA during football tackling.…”

Section: Discussionmentioning

confidence: 89%

“…Our intervention differs in length of the intervention and selection of exercises from that in previous studies reporting strength gains but no corresponding reduced kinematic response of the head (25,26). We added exercises aiming at neuromuscular stabilization that include plyometrics for the trunk and neck perturbations.…”

Section: Discussionmentioning

confidence: 99%

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Neck and Trunk Strength Training to Mitigate Head Acceleration in Youth Soccer Players

Müller

Zentgraf

2020

Journal of Strength and Conditioning Research

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Müller, C and Zentgraf, K. Neck and trunk strength training to mitigate head acceleration in youth soccer players. J Strength Cond Res 35(12S): S81–S89, 2021—Heading in soccer involves repetitive head accelerations that may be detrimental for brain health. One way to mitigate adverse effects may be to increase head-neck stabilization and thus reduce the kinematic response after intentional headers. This study aimed to (a) assess associations between neck strength and head kinematics and (b) evaluate an exercise intervention designed to increase strength and attenuate head acceleration during intentional heading in youth soccer players. In 22 athletes, we used accelerometers to assess associations between neck strength and peak linear acceleration (PLA). We attached the accelerometers to the occiput and sternum, allowing us to differentiate between total, trunk, and head PLA. Longitudinally, we evaluated the effects of a 14-week twice-weekly resistance training in a subsample of 14 athletes compared with regular soccer training (N = 13). Results showed that female athletes had lower isolated neck strength (p ≤ 0.004), lower functional neck strength (p ≤ 0.017), and higher total PLA during purposeful headers compared with males (17.2 ± 3.5 g and 13.0 ± 2.3 g, respectively, at 9.6 m·s−1 ball velocity during impact; p = 0.003). The intervention group showed moderate to large strength gains ( = 0.16–0.42), resulting in lower PLA (total −2.4 g, trunk −0.8 g, and head −1.5 g) during headers. We conclude that a resistance training focusing on cervical and trunk musculature is practicable in youth soccer, elicits strength gains, and helps to mitigate PLA during purposeful heading. Results should encourage youth strength and conditioning professionals to incorporate neck exercises as a risk reduction strategy into their training routine.

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Section: Discussioncontrasting

confidence: 99%

Section: Discussionsupporting

confidence: 88%

Section: Discussionmentioning

confidence: 89%

Section: Discussionmentioning

confidence: 99%

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Neck and Trunk Strength Training to Mitigate Head Acceleration in Youth Soccer Players

Müller

Zentgraf

2020

Journal of Strength and Conditioning Research

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“…Lab UnRestricted ConfigurationKinematic data were captured and recorded at the University of Miami's Biomechanics laboratory with the Vicon (Oxford Metrics, United Kingdom) Nexus software and 10 MX cameras providing[8].…”

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confidence: 99%

Careful and accurate placement of avionics boxes during maintenance of flight hardware

Stambolian

Asfour

Eltoukhy

2014

2014 IEEE Aerospace Conference

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Because a key driver to the cost of launching aerospace hardware into space is its weight, the design of the flight hardware has many trade-offs to reduce the overall weight of the flight vehicle. These trade-offs usually result in reduced work space for maintaining and repairing the flight hardware. One very common ground replaceable flight hardware in aerospace launch and crewed vehicles are the avionics box. Which during the installation of these avionics boxes they must be accurately and carefully placed to reduce damage to hardware, such as the cold plate, wiring, etc. The focus of this paper is to describe the results of a study set out to determine how accurately and carefully a human can place an avionics box in restricted space.

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Development and validation of a three dimensional dynamic biomechanical lifting model for lower back evaluation for careful box placement

Stambolian

Eltoukhy

Asfour

2016

International Journal of Industrial Ergonomics

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Cervical Strength Training Does Not Enhance Dynamic Stabilization of Head and Neck During Football Tackling

Cited by 6 publications

References 0 publications

Neck and Trunk Strength Training to Mitigate Head Acceleration in Youth Soccer Players

Neck and Trunk Strength Training to Mitigate Head Acceleration in Youth Soccer Players

Careful and accurate placement of avionics boxes during maintenance of flight hardware

Development and validation of a three dimensional dynamic biomechanical lifting model for lower back evaluation for careful box placement

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