Format

Send to

Choose Destination
J Sci Med Sport. 2015 Jan;18(1):103-8. doi: 10.1016/j.jsams.2013.12.005. Epub 2014 Jan 2.

Warm-up with a weighted vest improves running performance via leg stiffness and running economy.

Author information

1
Sports Performance Research Institute New Zealand, AUT University, New Zealand. Electronic address: kyle.barnes@yahoo.com.
2
Sports Performance Research Institute New Zealand, AUT University, New Zealand.

Abstract

OBJECTIVES:

To determine the effects of "strides" with a weighted-vest during a warm-up on endurance performance and its potential neuromuscular and metabolic mediators. A bout of resistance exercise can enhance subsequent high-intensity performance, but little is known about such priming exercise for endurance performance.

DESIGN:

A crossover with 5-7 days between an experimental and control trial was performed by 11 well-trained distance runners.

METHODS:

Each trial was preceded by a warm-up consisting of a 10-min self-paced jog, a 5-min submaximal run to determine running economy, and six 10-s strides with or without a weighted-vest (20% of body mass). After a 10-min recovery period, runners performed a series of jumps to determine leg stiffness and other neuromuscular characteristics, another 5-min submaximal run, and an incremental treadmill test to determine peak running speed. Clinical and non-clinical forms of magnitude-based inference were used to assess outcomes. Correlations and linear regression were used to assess relationships between performance and underlying measures.

RESULTS:

The weighted-vest condition resulted in a very-large enhancement of peak running speed (2.9%; 90% confidence limits ±0.8%), a moderate increase in leg stiffness (20.4%; ±4.2%) and a large improvement in running economy (6.0%; ±1.6%); there were also small-moderate clear reductions in cardiorespiratory measures. Relationships between change scores showed that changes in leg stiffness could explain all the improvements in performance and economy.

CONCLUSIONS:

Strides with a weighted-vest have a priming effect on leg stiffness and running economy. It is postulated the associated major effect on peak treadmill running speed will translate into enhancement of competitive endurance performance.

KEYWORDS:

Neuromuscular characteristics; Priming; Running economy; Running performance; Stiffness; Warm-up

PMID:
24462560
DOI:
10.1016/j.jsams.2013.12.005
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center