Shoulder Rotator Torques in Female Tennis and Nontennis Players

Ng, Linda R.; Kramer, John

doi:10.2519/jospt.1991.13.1.40

Cited by 35 publications

(22 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Strength ratios (IR/ER) reported in the few studies of female tennis players vary but the majority of ratios reported are higher than we observed. 8,15,21 We found an inverse relationship between age and strength ratio that is consistent with previous studies of female tennis players. Among these studies, female players aged 14 to 17 years had the highest mean ratio 8 and those in their mid-20s had an intermediate ratio.…”

Section: Strengthsupporting

confidence: 81%

“…Despite playing an average of 9 hours of tennis per week and having played for a median of 18 years, the participants in this study did not demonstrate any of the ROM or strength adaptations commonly reported to occur in highly skilled tennis players. 3,8,10,14,15,21 The fact that the hours played were comparable to those reported by the highly skilled junior tennis players who had strength and ROM adaptations 8 suggests that other factors, possibly intensity or differences in technique, may contribute to the observed adaptations. These findings highlight the need for caution in applying data collected from elite athletes to amateur athletes.…”

Section: Discussionsupporting

confidence: 48%

“…Among these studies there appears to be a trend towards a positive association between a high level of play and strength ratios. In general, male tennis players appear to have greater IR/ER ratios than females 5,6,8,21 and this trend is echoed in the normal population. 11,12 There was no dominance effect in strength ratios in the present study population.…”

Section: Strengthmentioning

confidence: 76%

“…Among these studies, female players aged 14 to 17 years had the highest mean ratio 8 and those in their mid-20s had an intermediate ratio. 21 Differences in level and ability of play between the subjects in these tennis studies may also account for the variation in ratio findings. Among these studies there appears to be a trend towards a positive association between a high level of play and strength ratios.…”

Section: Strengthmentioning

confidence: 89%

“…Within the highly skilled female tennis population, the same ratio was shown to range from 1.12 to 1.56. 8,21 Both male and female highly skilled tennis players have significantly greater IR strength in the dominant arm, but a detectable dominance effect in ER strength is rare. 8 No strength profiles on female amateur tennis players were identified in the literature.…”

mentioning

confidence: 99%

See 4 more Smart Citations

Shoulder Strength and Range of Motion in Female Amateur-League Tennis Players

Stanley

McGann²,

Hall³

et al. 2004

J Orthop Sports Phys Ther

View full text Add to dashboard Cite

Study Design: Cross sectional. Objectives: To compare the strength and range of motion of the dominant and nondominant shoulders of adult female amateur tennis players. The secondary purpose of the study was to examine whether there were any differences in the observed relationships between women with a past history of shoulder pain and those with no history of shoulder pathology. Background: Information on characteristics of the shoulder in amateur female tennis players is scarce, as research has concentrated on highly skilled or male players, despite the cumulative prevalence of shoulder pain in this group. Methods and Measures: Fifty-one female competitive, amateur tennis players (average age, 45 years) were tested bilaterally for shoulder internal/external rotation passive range of motion and isokinetic concentric strength. Results: Shoulder range of motion and strength ratios were comparable between sides. In the dominant arm, the total rotational range of motion was 221°, with an internal to external rotator peak torque ratio of 1.05. External rotator strength was significantly greater in the dominant arm of individuals with no history of pain. Conclusions: Range of motion and strength adaptations widely reported in highly skilled tennis players were not apparent in amateur female players. In assessment and management, clinicians should regard the amateur female tennis player as a separate entity from the highly skilled player. J Orthop Sports Phys Ther 2004;34:402-409.

show abstract

Section: Strengthsupporting

confidence: 81%

Section: Discussionsupporting

confidence: 48%

Section: Strengthmentioning

confidence: 76%

Section: Strengthmentioning

confidence: 89%

mentioning

confidence: 99%

See 3 more Smart Citations

Shoulder Strength and Range of Motion in Female Amateur-League Tennis Players

Stanley

McGann²,

Hall³

et al. 2004

J Orthop Sports Phys Ther

View full text Add to dashboard Cite

show abstract

Effects of isokinetic muscle activity on pressure in the supraspinatus muscle and shoulder torque

Sporrong

Styf

1999

Journal Orthopaedic Research

View full text Add to dashboard Cite

Work-related shoulder pain is an increasing problem. Work in overhead positions, which causes high pressure in the supraspinatus muscle, has been shown to increase the shoulder load. It is not known how different types of muscle activity in the shoulder affect pressure in the muscle. The aim of this study was to investigate the difference between contraction modes. This has not been done before for shoulder muscles. The results are relevant from several aspects, both clinical and experimental. Pressure in the supraspinatus muscle and torque generation in the shoulder during isokinetic concentric and eccentric activity were measured in nine healthy human subjects. Torque and arm position were measured continuously with a computerized ergonometer. The contraction velocity was 60 degrees per second, and the range of movement was 0-120 degrees of abduction. Electromyographic measurements were recorded with a surface electrode above the supraspinatus muscle belly. Intramuscular pressure was recorded with a microcapillary infusion technique. Peak intramuscular pressure did not differ significantly between the two modes of contraction, but the peak was reached at 115 degrees (SD = 15 degrees) of abduction during concentric activity and at 6 degrees (SD = 7 degrees) of abduction during eccentric activity. The ratio between intramuscular pressure and torque was 3.0 mm Hg/Nm (0.40 kPa/Nm) during concentric activity and 2.3 mm Hg/Nm (0.31 kPa/Nm) during eccentric activity. The peak torque occurred at 44 degrees of abduction during concentric muscle activity and at 74 degrees of abduction during eccentric activity. Intramuscular pressure was higher during isometric contraction than during eccentric and concentric activity, and the torque was in between the two latter contraction modes. We conclude that the supraspinatus muscle is heavily loaded not only in high arm positions during concentric contraction but also during eccentric contraction in arm positions of 0-30 degrees of abduction.

show abstract