Exercise as an Modulator of Immunological Risk Factors for Osteoporosis

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

43 participants

Study Classification

INTERVENTIONAL

Study Start Date

1996-12-31

Study Completion Date

1998-04-30

Brief Summary

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This is the second phase of a study designed to determine the immunological effects of long-term exercise on risk factors for ischemic heart disease (phase 1) and osteoporosis (phase 2). The results indicate that six months of moderate intensity exercise reduces bone resorption and increases the secretion of anti-osteoclastogenic cytokines by peripheral blood mononuclear cells.

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Detailed Description

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In a before and after trial involving 43 healthy adults the investigators measured the effect of six months of supervised exercise on the spontaneous and phytohemagglutinin-induced production of osteoclastogenic cytokines (interleukin-1α, tumor necrosis factor-α), anti-osteoclastogenic cytokines (transforming growth factor-β, interleukins 4 and10), pleiotropic cytokines with variable effects on osteoclastogenesis (interferon-γ, interleukin-6), and T cell growth and differentiation factors (interleukins 2 and 12) by peripheral blood mononuclear cells. The investigators also measured lymphocyte phenotypes, and serum markers of bone formation (osteocalcin), bone resorption (C-terminal telopeptides of Type I collagen), and bone homeostasis (estradiol, vitamin D2, testosterone, parathyroid hormone, insulin-like growth factor).

Conditions

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Osteoporosis

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Interventions

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Supervised exercise program

Subjects were enrolled in a hospital-based wellness center where, after analysis of their medical history and previous levels of physical activity ands documentation of a normal exercise stress test, they chose individually tailored exercise programs

Intervention Type OTHER