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Hypergravity Training: Women's Track and Field.

Sands, William A.; Poole, R. Craig; Ford, Heide R.; Cervantez, Robert D.; Irvin, Randy C.; Major, James A.
Journal of Strength & Conditioning Research: February 1996
Article: PDF Only

Eleven female collegiate track and field athletes completed a study of hypergravity training to improve jumping performance. Five experimental and 6 controls were quasi-randomly selected from this intact team. The experimental athletes wore weighted vests for 3 weeks from morning to evening. The training load was periodized via percentages of body mass. Both groups continued their normal training loads in practice and competed in their indoor season. Vertical jump was measured weekly using a VertecTM device. The experimental athletes' mean overall change in vertical jump was 5.0 cm (SD = 1.42 cm); the control group mean improved 1.4 cm (SD = 1.73 cm). The athletes were considerably fatigued going into the Week 2 testing, thus this data point was removed from further analyses. A 2 x 4 ANCOVA with repeated measures was calculated on the values for Weeks 3 through 6 (covariate = pretest value). There was a statistically significant difference between groups. The values were not statisticaly different across time. The group x time interaction was not statistically significant. This confirmed and expanded the results of earlier investigations done primarily on male athletes.

(C) 1996 National Strength and Conditioning Association