Effect of weighted vest suit worn during daily activities on running speed, jumping power, and agility in young men

Rantalainen, Timo, Ruotsalainen, Ilona and Virmavirta, Mikko 2012, Effect of weighted vest suit worn during daily activities on running speed, jumping power, and agility in young men, Journal of Strength and Conditioning Research, vol. 26, no. 11, pp. 3030-3035.

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Title Effect of weighted vest suit worn during daily activities on running speed, jumping power, and agility in young men
Author(s) Rantalainen, Timo
Ruotsalainen, Ilona
Virmavirta, Mikko
Journal name Journal of Strength and Conditioning Research
Volume number 26
Issue number 11
Start page 3030
End page 3035
Total pages 6
Publisher National Strength and Conditioning Association
Place of publication Colorado Springs, Colo.
Publication date 2012
ISSN 1064-8011
1533-4287
Keyword(s) Intervention
RCT
Change of direction
Hypergravity
Performance
Summary Effect of weighted vest suit worn during daily activities on running speed, jumping power, and agility in young men. J Strength Cond Res 26(11): 3030-3035, 2012-Previous weighted vest interventions using exercise in addition to hypergravity have been successful in improving postural balance and power production capacity. The purpose of this study was to investigate if hypergravity alone in daily activities excluding sporting activities is effective in improving neuromuscular performance in young adults. Eight male subjects (age = 32 [SD: 6] years, height = 178 [5] cm, and body mass = 81 [8] kg) wore weighted vests 3 d.wk-1 for 3 weeks during waking hours, excluding sporting activities. Control group comprised 9 male subjects (age = 32 [6] years, height = 179 [5] cm, and body mass = 83 [9] kg). Performance was assessed with countermovement jump (body mass normalized peak power), figure-of-8 running test (running time), and running velocity test at baseline and at the end of the intervention. At baseline, the groups did not differ from each other (multivariate analysis of variance [MANOVA] p = 0.828). A significant group × time interaction (MANOVA F = 5.1, p = 0.015) was observed for performance variables. Analysis of covariance indicated that the intervention improved the figureof- 8 running time (p = 0.016) (22.2 vs. 0.5%), whereas normalized peak power (0.0 vs. 1.6%) and running velocity (1.3 vs. 0.1%) were unaffected (p ≥ 0.095). Wearing weighted vests was effective in slightly improving agility-related performance in young men. Because the effect was small, applying hypergravity only during exercise probably suffices. It appears that a proper volume and intensity of hypergravity could be in the order of 5-10% body weight vest worn during up to 50% of the training sessions for a period of 3-4 weeks.
Language eng
Field of Research 119999 Medical and Health Sciences not elsewhere classified
Socio Economic Objective 970111 Expanding Knowledge in the Medical and Health Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2012, National Strength and Conditioning Association
Persistent URL http://hdl.handle.net/10536/DRO/DU:30061365

Document type: Journal Article
Collection: School of Exercise and Nutrition Sciences
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