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Updated: Jul 8, 2026

In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy

In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy

Published on: July 2, 2021

A one-year exercise intervention program in pre-pubertal girls does not influence hip structure.

Gayani Alwis¹, Christian Linden, Susanna Stenevi-Lundgren

¹Clinical and Molecular Osteoporosis Research Unit, Department of Clinical Sciences, Lund University, Sweden. Gayani.Alwis@med.lu.se

BMC Musculoskeletal Disorders

|January 25, 2008

Summary

A one-year school exercise program did not change hip structure in pre-pubertal girls. This study evaluated bone geometry, independent of bone mineral accrual, for fracture risk insights.

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Area of Science:

Pediatric exercise science
Bone health research
Skeletal development

Background:

Previous research indicated a school-based exercise program positively impacts bone mineral accrual in pre-pubertal girls.
Hip structure geometry, independent of bone mineral content, is crucial for understanding fracture risk.

Purpose of the Study:

To determine if a one-year school-based exercise intervention affects hip structure in pre-pubertal girls.
To assess if exercise influences femoral neck geometry beyond bone mineral density.

Main Methods:

Fifty-three girls (7-9 years) participated in a 200 min/week exercise program; 50 controls had 60 min/week physical education.
Dual X-ray absorptiometry (DXA) and Hip Structural Analysis (HSA) software assessed femoral neck (FN) geometry.
Annual changes in bone mineral content, areal bone mineral density, and various geometric parameters were compared between groups.

Main Results:

No significant differences were observed in femoral neck structural variables between the exercise and control groups over the 12-month study period.
The total duration of exercise throughout the year did not correlate with changes in femoral neck traits.

Conclusions:

A general, one-year school-based exercise program for 7-9-year-old girls does not appear to influence hip structure.
The findings suggest that this type of intervention may not alter key geometric parameters of the hip relevant to fracture risk.