A Study of the Isometric Cervical Extension Strength of College American Football Players

Tsuyama, Kaoru; Nakazato, K; Fujishiro, Hitone; Nakajima, Hiroyuki

doi:10.7600/jspfsm1949.49.295

Cited by 1 publication

(3 citation statements)

References 8 publications

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“…Various methods of measuring the strength of the neck muscles have been described in previous studies (Leggett et al 1991;Highland et al 1992;Pollock et al 1993;Ylinen and Ruuska 1994;Jacobs et al 1995;Jordan et al 1999;Ylinen et al 1999;Tsuyama et al 1999Tsuyama et al , 2000a. A cervical extension machine (CEM; MedX, USA) (Leggett et al 1991;Highland et al 1992;Pollock et al 1993;Jacobs et al 1995;Tsuyama et al 2000a) has been demonstrated as being an eective tool for measuring neck muscle strength in previous reports.…”

Section: Introductionmentioning

confidence: 95%

“…A cervical extension machine (CEM; MedX, USA) (Leggett et al 1991;Highland et al 1992;Pollock et al 1993;Jacobs et al 1995;Tsuyama et al 2000a) has been demonstrated as being an eective tool for measuring neck muscle strength in previous reports. With this method the isometric cervical extension strength (ICES) can be measured at eight angles of cervical¯exion without any need to move the torso or pelvis.…”

Section: Introductionmentioning

confidence: 97%

“…Jacobs et al (1995) compared the ICES between an experienced and an inexperienced cyclist based on measurements using the CEM. Tsuyama et al (2000a) made a comparison of the ICES in college American football players based on both their performance levels and positions of play. However, there has so far been no report comparing the ICES ®ndings using the CEM for athletes from various kinds of sports.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of the isometric cervical extension strength and a cross-sectional area of neck extensor muscles in college wrestlers and judo athletes

Tsuyama

Yamamoto

Fujimoto

et al. 2001

European Journal of Applied Physiology

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Increasing neck muscle strength can play an important role in preventing neck injuries in contact sports. The purpose of this study was to examine the actual conditions of the isometric cervical extension strength (ICES) and the cross-sectional area (CSA) of neck extensor muscles in male athletes participating in college wrestling and judo. The subjects comprised 18 wrestlers and 37 judo athletes from Nippon Sports Science University in Japan. The ICES was measured at eight angles (126 degrees, 108 degrees, 90 degrees, 72 degrees, 54 degrees, 36 degrees, 18 degrees, 0 degrees ). Transverse slices of 10 mm thickness were obtained at the position of each intervertebral disc between C2 and C3, C3 and C4, C4 and C5 and C5 and C6 using magnetic resonance imaging. The ICES of the wrestlers were significantly higher than those of the judo athletes. The ICES curve against the angle in wrestlers tended to differ from that of judo athletes. The CSA of neck extensor muscles in the wrestlers was significantly larger at all intervertebral levels examined than those of the judo athletes. A significant difference was observed in the CSA of the deepest area of neck extensor muscles between the groups although the difference was not significant in the superficial area. In this study, the ICES and the CSA in wrestlers were shown to be significantly higher and larger respectively than in the judo athletes, indicating a significant difference between these two sports.

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