Abstract：
UNLABELLED:Controversy surrounds whether running mechanics make good predictors of running economy (RE) with little known about the development of an economical running gait. PURPOSE:The aim of this study was to identify if mechanical or physiological variables changed during 10 wk of running in beginners and whether these changes could account for any change in RE. METHODS:A 10-wk running program (10 wkRP) was completed by 10 female beginner runners. A bilateral three-dimensional kinematic and kinetic analysis, in addition to RE and lower body flexibility measurements, was performed before and after the 10 wkRP. The Balke-Ware graded walking exercise test was performed before and after the 10 wkRP to determine VO2max. RESULTS:Seven kinematic and kinetic variables significantly changed from before to after training, in addition to a significant decrease in calf flexibility (27.3° ± 6.3° vs 23.9° ± 5.6°, P < 0.05). A significant improvement was seen in RE (224 ± 24 vs 205 ± 27 mL · kg(-1) · km(-1), P < 0.05) and treadmill time to exhaustion (16.4 ± 3.2 vs 17.3 ± 2.8 min, P < 0.05); however, VO2max remained unchanged from before to after training (34.7 ± 5.1 vs 34.3 ± 5.6 mL · kg(-1) · min(-1)). Stepwise regression analysis showed three kinematic variables to explain 94.3% of the variance in change in RE. They were a less extended knee at toe off (P = 0.004), peak dorsiflexion occurring later in stance (P = 0.001), and a slower eversion velocity at touchdown (P = 0.042). The magnitude of change for each variable was 1.5%, 4.7%, and 34.1%, respectively. CONCLUSIONS:These results show that beginner runners naturally developed their running gait as they became more economical runners.
journal_name
Med Sci Sports Exercjournal_title
Medicine and science in sports and exerciseauthors
Moore IS,Jones AM,Dixon SJdoi
10.1249/MSS.0b013e318255a727subject
Has Abstractpub_date
2012-09-01 00:00:00pages
1756-63issue
9eissn
0195-9131issn
1530-0315journal_volume
44pub_type
杂志文章abstract：BACKGROUND:Sensitization of mechanosensitive afferents, which contribute to the exercise pressor reflex, has been recognized as a characteristic of patients with heart failure (HF); however, the hemodynamic implications of this hypersensitivity are unclear. OBJECTIVES:The present study used passive leg movement (PLM) ...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/MSS.0000000000000782
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journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章,评审
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journal_title：Medicine and science in sports and exercise
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journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章,评审
doi：
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journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
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journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章,评审
doi：10.1097/00005768-199810001-00002
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journal_title：Medicine and science in sports and exercise
pub_type： 临床试验,杂志文章,随机对照试验
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更新日期：2004-02-01 00:00:00
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pub_type： 杂志文章
doi：
更新日期：1992-08-01 00:00:00
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journal_title：Medicine and science in sports and exercise
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pub_type： 杂志文章
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journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
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doi：10.1249/MSS.0b013e3181d58a92
更新日期：2010-09-01 00:00:00
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journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/01.MSS.0000093610.71730.02
更新日期：2003-11-01 00:00:00
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journal_title：Medicine and science in sports and exercise
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更新日期：2014-11-01 00:00:00
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journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：
更新日期：1995-03-01 00:00:00
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journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章,随机对照试验
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更新日期：2015-01-01 00:00:00
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journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/MSS.0b013e31816770e1
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journal_title：Medicine and science in sports and exercise
pub_type： 临床试验,杂志文章
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journal_title：Medicine and science in sports and exercise
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journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章,评审
doi：
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journal_title：Medicine and science in sports and exercise
pub_type： 临床试验,杂志文章
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更新日期：2002-11-01 00:00:00
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journal_title：Medicine and science in sports and exercise
pub_type： 临床试验,杂志文章,随机对照试验
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journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：
更新日期：1990-04-01 00:00:00
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journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
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更新日期：2020-06-01 00:00:00
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journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/00005768-198606000-00017
更新日期：1986-06-01 00:00:00
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journal_title：Medicine and science in sports and exercise
pub_type： 临床试验,杂志文章,随机对照试验
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更新日期：2003-03-01 00:00:00
abstract：INTRODUCTION:Alternative high school (AHS) students are an underserved population of youth at greater risk for poor health behaviors and outcomes. Little is known about their physical activity patterns. PURPOSE:: The purpose of this study was to describe 1) physical activity levels of students attending alternative hi...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/MSS.0b013e318182092b
更新日期：2008-12-01 00:00:00
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journal_title：Medicine and science in sports and exercise
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doi：10.1249/MSS.0b013e31815ed6d2
更新日期：2008-03-01 00:00:00
