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Medicine & Science in Sports & Exercise:
doi: 10.1249/MSS.0b013e3181666eea
APPLIED SCIENCES: Biodynamics

Gender Differences in Bicycle Saddle Pressure Distribution during Seated Cycling

POTTER, JAMES J.1; SAUER, JULIE L.1; WEISSHAAR, CHRISTINE L.1; THELEN, DARRYL G.1,2,3; PLOEG, HEIDI-LYNN1,2

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Abstract

Introduction: The purpose of this study was to investigate the influence of gender, power, hand position, and ischial tuberosity (IT) width on saddle pressure during seated stationary cycling.

Methods: Twenty-two experienced cyclists (11 males and 11 females) were fitted to an adjustable stationary bicycle and pedaled at 100 and 200 W in both the tops and drops hand positions. An instrumented pressure mat was used to record saddle pressure distribution. Normalized force, maximum sensor pressure, and center of pressure were computed for anterior and posterior regions of the saddle.

Results: When increasing power from 100 to 200 W, there were significant reductions in normalized force in all saddle regions and maximum pressure in the posterior region. When moving from the tops to drops hand position, centers of pressure in all regions moved forward, normalized force and maximum pressure on the posterior region decreased, and females (but not males) exhibited an increase in normalized force and maximum pressure in the anterior region. Male centers of pressure were farther forward in the anterior and total saddle regions than they were for females. Females exhibited a larger IT width than males. Interindividual differences in IT width were significantly correlated with the posterior center of pressure fore-aft location on the saddle in the tops and drops hand positions and with the width between the posterior left and right centers of pressure in the tops hand position.

Conclusions: There are significant gender-related differences in saddle loading which are important to consider when designing saddles. These differences are especially important when riders are in the handlebar drops and more weight is supported on the anterior pelvic structures.

©2008The American College of Sports Medicine

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