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Research article summary:
Effects of rope-jump training on the os calcis stiffness index of postpubescent girls.
Abstract Extract:
PURPOSE: The specific aims of the study were to 1) determine what effects dose-dependent rope jumping had on os calcis stiffness index (OCSI) and 2) determine whether OCSI values measured by quantitative ultrasound (QUS) were dependent or independent of ... (Full abstract text below) Published 2002Dec
in Journal: Med Sci Sports Exerc
(Language : eng)
Full Pubmed Extract
This information was retrieved, real-time, on your behalf from the public area of the Pubmed website:
1. Med Sci Sports Exerc.
2002 Dec;34(12):1913-9
Effects of rope-jump training on the os calcis stiffness index of postpubescent girls.
Arnett MG, Lutz B
Applied Physiology Laboratory in Physical Education, and College of Medicine, University of Arizona, Tucson, AZ 85721, USA. marnett@u.arizona.edu
PURPOSE: The specific aims of the study were to 1) determine what effects dose-dependent rope jumping had on os calcis stiffness index (OCSI) and 2) determine whether OCSI values measured by quantitative ultrasound (QUS) were dependent or independent of the values of bone mineral content (BMC) determined by dual energy x-ray absorptiometry (DXA) at the lumbar spine and proximal femur (femoral neck; greater trochanter). METHODS: Upon study entry, girls were randomly assigned to either one of two treatment groups (high volume; low volume) or a control group. Thirty-seven high school girls were recruited to participate in the study. QUS and DXA measurements were made at baseline and at 4-month follow-up. Students in the high-volume and low-volume groups jumped rope for 10 and 5 min, respectively. RESULTS: The follow-up mean OCSI values for the high-volume, low-volume, and control conditions were 103.95 +/- 12.55, 102.09 +/- 12.70, and 99.05 +/- 9.84, respectively. A statistically significant difference (P = 0.033) was identified between the high-volume and control groups. Baseline and follow-up OCSI values were significantly correlated with baseline and follow-up BMC measures of the femoral neck (r = 0.60, r = 0.59), greater trochanter (r = 0.47, r = 0.40), and lumbar spine (r = 0.56, r = 0.56). CONCLUSIONS: High-volume rope jumping increases the OCSI more than the control condition in postpubescent girls. Furthermore, the OCSI measured by QUS is moderately related to proximal femur and lumbar spine BMC measured by DXA.
PMID : 12471296 [PubMed - Indexed for MEDLINE]
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Full Author Information
| First Name | LastName | Initials |
| Mark G | Arnett | MG |
| Bob | Lutz | B |
Affiliation: Applied Physiology Laboratory in Physical Education, and College of Medicine, University of Arizona, Tucson, AZ 85721, USA. marnett@u.arizona.edu
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Category links from this article:- Adolescent
- Analysis of Variance
- Arizona
- Body Weight - physiology
- Bone Density - physiology
- Calcaneus - physiopathology
- Female
- Femur Neck - physiology
- Follow-Up Studies
- Humans
- Lumbar Vertebrae - physiology
- Motor Activity - physiology
- Physical Education and Training
- Puberty - physiology
- Reference Values
- Statistics as Topic
- Women's Health
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