The effects of short-term jump training on bone metabolism in females using oral contraceptives.

The purpose of this study was to determine the effect of oral contraceptive use on bone serum markers following a 3-week jumping protocol. Twenty-three females (18-25 years) were grouped as oral contraceptive users (OC+) or non-users (OC-). Following a 3-week observation period, participants completed a 3-week (15-day) jump protocol.

Short-term jump activity on bone metabolism in female college-aged nonathletes.

There have been few studies examining the short-term effect of high-impact activities on bone metabolism measured by bone serum marker concentrations. The purpose of this study was to examine the effect of short-term high-impact jump activity on bone turnover in female college-aged non-athletes. Twenty six healthy females were randomly assigned to a control or jump group.