Changes in running economy at different intensities following downhill running

2009 ◽  
Vol 27 (11) ◽  
pp. 1137-1144 ◽  
Author(s):  
Trevor C. Chen ◽  
Kazunori Nosaka ◽  
Ming-Ju Lin ◽  
Hsin-Lian Chen ◽  
Chang-Jun Wu
Keyword(s):  
Running Economy ◽  
Downhill Running

Level, uphill and downhill running economy values are strongly inter-correlated

2018 ◽  
Vol 119 (1) ◽  
pp. 257-264 ◽  
Author(s):  
Timothy Joseph Breiner ◽  
Amanda Louise Ryan Ortiz ◽  
Rodger Kram
Keyword(s):  
Running Economy ◽  
Downhill Running

scholarly journals Level, Uphill, and Downhill Running Economy Values Are Correlated Except on Steep Slopes

2021 ◽  
Vol 12 ◽  
Author(s):  
Marcel Lemire ◽  
Mathieu Falbriard ◽  
Kamiar Aminian ◽  
Grégoire P. Millet ◽  
Frédéric Meyer
Keyword(s):  
Knee Extensor ◽  
Running Economy ◽  
Energy Costs ◽  
Strength Assessment ◽  
Cardiopulmonary Fitness ◽  
Downhill Running ◽  
Lower Limb Strength ◽  
Reaction Forces ◽  
Steep Slopes ◽  
Level Running

The aim of this study was first to determine if level, uphill, and downhill energy cost of running (ECR) values were correlated at different slopes and for different running speeds, and second, to determine the influence of lower limb strength on ECR. Twenty-nine healthy subjects completed a randomized series of 4-min running bouts on an instrumented treadmill to determine their cardiorespiratory and mechanical (i.e., ground reaction forces) responses at different constant speeds (8, 10, 12, and 14 km·h−1) and different slopes (−20, −10, −5, 0, +5, +10, +15, and +20%). The subjects also performed a knee extensor (KE) strength assessment. Oxygen and energy costs of running values were correlated between all slopes by pooling all running speeds (all r2 ≥ 0.27; p ≤ 0.021), except between the steepest uphill vs. level and the steepest downhill slope (i.e., +20% vs. 0% and −20% slopes; both p ≥ 0.214). When pooled across all running speeds, the ECR was inversely correlated with KE isometric maximal torque for the level and downhill running conditions (all r2 ≥ 0.24; p ≤ 0.049) except for the steepest downhill slope (−20%), but not for any uphill slopes. The optimal downhill grade (i.e., lowest oxygen cost) varied between running speeds and ranged from −14% and −20% (all p < 0.001). The present results suggest that compared to level and shallow slopes, on steep slopes ~±20%, running energetics are determined by different factors (i.e., reduced bouncing mechanism, greater muscle strength for negative slopes, and cardiopulmonary fitness for positive slopes). On shallow negative slopes and during level running, ECR is related to KE strength.

The Effects of a Downhill Running Bout on Running Economy

2012 ◽  
Vol 20 (3-4) ◽  
pp. 274-285 ◽  
Author(s):  
William A. Braun ◽  
Sally Paulson
Keyword(s):  
Running Economy ◽  
Downhill Running

Changes in Running Economy following the Repeated Bout of Downhill Running

2006 ◽  
Vol 38 (Supplement) ◽  
pp. S387-S388
Author(s):  
Trevor C. Chen ◽  
Jui-Hung Tu ◽  
Priscilla M. Clarkson
Keyword(s):  
Running Economy ◽  
Downhill Running ◽  
Repeated Bout

THE EFFECT OF REPEATED DOUTS OF DOWNHILL RUNNING ON RUNNING ECONOMY AND RUNNING KINEMATICS

1992 ◽  
Vol 24 (Supplement) ◽  
pp. S129
Author(s):  
C. Harris ◽  
K. C. Westerlind ◽  
W. C. Bymes ◽  
A. R. Wilcox
Keyword(s):  
Running Economy ◽  
Downhill Running

scholarly journals Isometric pre-conditioning blunts exercise-induced muscle damage but does not attenuate changes in running economy following downhill running

2018 ◽  
Vol 60 ◽  
pp. 1-9 ◽  
Author(s):  
Leonardo C.R. Lima ◽  
Natália M. Bassan ◽  
Adalgiso C. Cardozo ◽  
Mauro Gonçalves ◽  
Camila C. Greco ◽  
...  
Keyword(s):  
Muscle Damage ◽  
Running Economy ◽  
Downhill Running ◽  
Exercise Induced

scholarly journals Exercise-Induced Muscle Damage and Running Economy in Humans

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
Cláudio de Oliveira Assumpção ◽  
Leonardo Coelho Rabello Lima ◽  
Felipe Bruno Dias Oliveira ◽  
Camila Coelho Greco ◽  
Benedito Sérgio Denadai
Keyword(s):  
Muscle Damage ◽  
High Intensity ◽  
Energy Demand ◽  
Negative Impact ◽  
High Intensity Exercise ◽  
Running Economy ◽  
Running Performance ◽  
Downhill Running ◽  
Short Period ◽  
Exercise Induced

Running economy (RE), defined as the energy demand for a given velocity of submaximal running, has been identified as a critical factor of overall distance running performance. Plyometric and resistance trainings, performed during a relatively short period of time (~15–30 days), have been successfully used to improve RE in trained athletes. However, these exercise types, particularly when they are unaccustomed activities for the individuals, may cause delayed onset muscle soreness, swelling, and reduced muscle strength. Some studies have demonstrated that exercise-induced muscle damage has a negative impact on endurance running performance. Specifically, the muscular damage induced by an acute bout of downhill running has been shown to reduce RE during subsequent moderate and high-intensity exercise (>65% VO2max). However, strength exercise (i.e., jumps, isoinertial and isokinetic eccentric exercises) seems to impair RE only for subsequent high-intensity exercise (~90% VO2max). Finally, a single session of resistance exercise or downhill running (i.e., repeated bout effect) attenuates changes in indirect markers of muscle damage and blunts changes in RE.

Changes in running economy following downhill running

2007 ◽  
Vol 25 (1) ◽  
pp. 55-63 ◽  
Author(s):  
Trevor C. Chen ◽  
Kazunori Nosaka ◽  
Jui-Hung Tu
Keyword(s):  
Running Economy ◽  
Downhill Running

Changes In Running Economy Following A Single Bout Of Downhill Running

2005 ◽  
Vol 37 (Supplement) ◽  
pp. S443
Author(s):  
Trevor C. Chen ◽  
Kazunori Nosaka ◽  
Jui-Hung Tu
Keyword(s):  
Running Economy ◽  
Downhill Running ◽  
Single Bout
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