Abstract：
:Loading of the low back tissues induces tension-relaxation in the viscoelastic connective tissues. The extent to which repetitive loading influences the muscle activation and subsequent muscle force production has not been fully explored. The purpose of this study was to examine the myoelectric activity of the trunk muscles during maximal flexion and extension exertions before and after a passive trunk flexion-extension protocol. Nineteen subjects performed three trials of maximal efforts in trunk flexion and extension while seated in an upright position. Surface electromyography (EMG) recordings were collected bilaterally from paraspinal (thoracic, TP, lumbar LP), rectus abdominis (RA), and external oblique muscles. A 10-minute passive trunk flexion-extension protocol was used to repetitively load the lumbar tissues at a rate of 0.17 rad/s, through the subjects' range of motion. The main findings included a significant reduction in moment output during extension efforts (p < 0.05) with significant reductions in the average EMG from the TP and LP muscles during extension (p < 0.05). In flexion, peak and average EMGs were also significantly reduced (p < 0.05). The results indicate a significant reduction in the ability of the trunk extensors to output force, but this may be due to the increased compliance of the connective tissues rather than modified neuromuscular signals to the paraspinal muscles. However, neuromuscular changes were apparent in the TP and RA muscles suggesting a modified control mechanism was present.
journal_name
Eur J Appl Physioljournal_title
European journal of applied physiologyauthors
Olson MWdoi
10.1007/s00421-010-1742-xsubject
Has Abstractpub_date
2011-07-01 00:00:00pages
1269-78issue
7eissn
1439-6319issn
1439-6327journal_volume
111pub_type
临床试验,杂志文章abstract：:Nitric oxide (NO), a short-lived vasoactive substance that has multiple physiological functions, is also involved in skeletal muscle physiology. This work examines the levels of nitrate (the metabolic end-product of NO) in muscle and plasma after different exercise protocols: namely acute, eccentric, cardiac stress an...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-002-0693-2
更新日期：2002-11-01 00:00:00
abstract：:The purpose of the study was to investigate the characteristics of shock attenuation during high-speed running. Maximal running speed was identified for each subject [n = 8 males, 25 (SD 4.6) years; 80 (8.9) kg; 1.79 (0.06) m] as the highest speed that could be sustained for about 20 s on a treadmill. During testing, ...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-002-0646-9
更新日期：2002-08-01 00:00:00
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journal_title：European journal of applied physiology
pub_type： 杂志文章
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更新日期：2014-02-01 00:00:00
abstract：: ...
journal_title：European journal of applied physiology
pub_type： 评论,信件
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更新日期：2018-12-01 00:00:00
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journal_title：European journal of applied physiology
pub_type： 临床试验,杂志文章
doi：10.1007/s00421-003-0881-8
更新日期：2003-09-01 00:00:00
abstract：:We used the direct Fick measurements to validate a method for estimating cardiac output by iteratively fitting VCO(2) at the mouth to lung model values. This model was run using a series of 50, 30 and 10 breaths to test sensitivity to number of breaths used for fitting. The lung was treated as a catenary two-compartme...
journal_title：European journal of applied physiology
pub_type： 杂志文章
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更新日期：2005-10-01 00:00:00
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journal_title：European journal of applied physiology
pub_type： 杂志文章,随机对照试验
doi：10.1007/s00421-010-1714-1
更新日期：2011-06-01 00:00:00
abstract：:Velocity at VO(2 max) (vV(.)O(2 max)) and peak treadmill velocity (PTV) are variables highly predictive of endurance performance. However, how these variables are affected by the menstrual cycle is unknown. The aim of this study was to assess the effect of the menstrual cycle on vV(.)O(2 max) and PTV. Ten, female runn...
journal_title：European journal of applied physiology
pub_type： 杂志文章
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更新日期：2005-03-01 00:00:00
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journal_title：European journal of applied physiology
pub_type： 临床试验,杂志文章
doi：10.1007/s004210000264
更新日期：2000-11-01 00:00:00
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journal_title：European journal of applied physiology
pub_type： 临床试验,杂志文章
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更新日期：2005-05-01 00:00:00
abstract：PURPOSE:An Ironman triathlon is associated with changes in body composition as well as decreases in neuromuscular function. While the changes in body composition occurring during an Ironman are well investigated, comprehensive data on the changes in neuromuscular performance are scarce. In the present study, we investi...
journal_title：European journal of applied physiology
pub_type： 杂志文章
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更新日期：2015-04-01 00:00:00
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journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-020-04359-9
更新日期：2020-05-01 00:00:00
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journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-007-0567-8
更新日期：2007-12-01 00:00:00
abstract：:It is not known how the mode of exercise, dynamic and static exercises, affects the limb volume. Therefore, the purpose of this study was to investigate hand and wrist volume (HWV) after dynamic and static handgrip exercise. Nine healthy subjects (age 31.8 +/- 7.3 years; height 172.0 +/- 5.7 cm; body mass 66.9 +/- 8.1...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-008-0672-3
更新日期：2008-05-01 00:00:00
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journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-019-04177-8
更新日期：2019-08-01 00:00:00
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journal_title：European journal of applied physiology
pub_type： 临床试验,杂志文章
doi：10.1007/s00421-010-1743-9
更新日期：2011-06-01 00:00:00
abstract：PURPOSE:This study compared the effect of periodised versus non-periodised (NP) resistance training on neuromuscular adaptions in older adults. METHODS:Forty-one apparently healthy untrained older adults (female = 21, male = 20; 70.9 ± 5.1 years; 166.3 ± 8.2 cm; 72.9 ± 13.4 kg) were recruited and randomly stratified t...
journal_title：European journal of applied physiology
pub_type： 杂志文章,随机对照试验
doi：10.1007/s00421-017-3605-1
更新日期：2017-06-01 00:00:00
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journal_title：European journal of applied physiology
pub_type： 临床试验,杂志文章
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journal_title：European journal of applied physiology
pub_type： 杂志文章
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journal_title：European journal of applied physiology
pub_type： 临床试验,杂志文章
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journal_title：European journal of applied physiology
pub_type： 杂志文章
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更新日期：2013-12-01 00:00:00
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journal_title：European journal of applied physiology
pub_type： 杂志文章
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更新日期：2007-04-01 00:00:00
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journal_title：European journal of applied physiology
pub_type： 杂志文章,随机对照试验
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更新日期：2019-07-01 00:00:00
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journal_title：European journal of applied physiology
pub_type： 杂志文章
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更新日期：2013-01-01 00:00:00
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journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-008-0711-0
更新日期：2008-06-01 00:00:00
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journal_title：European journal of applied physiology
pub_type： 杂志文章
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更新日期：2008-01-01 00:00:00
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journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s004210000309
更新日期：2000-12-01 00:00:00
abstract：PURPOSE:The focus of this study was to monitor daily objective measures of standing postural control over an 8-week period, recorded in a person's home, in a population of healthy older adults. Establishing natural patterns of variation in the day-to-day signal, occurring in the relative absence of functional decline o...
journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-014-3034-3
更新日期：2015-02-01 00:00:00
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journal_title：European journal of applied physiology
pub_type： 杂志文章
doi：10.1007/s00421-010-1423-9
更新日期：2010-07-01 00:00:00
abstract：PURPOSE:Polyphenolic curcumin is known to have potent anti-inflammatory effects; thus the present study investigated the hypothesis that curcumin ingestion would attenuate muscle damage after eccentric exercise. METHODS:Fourteen untrained young men (24 ± 1 years) performed 50 maximal isokinetic (120°/s) eccentric cont...
journal_title：European journal of applied physiology
pub_type： 杂志文章,随机对照试验
doi：10.1007/s00421-015-3170-4
更新日期：2015-09-01 00:00:00
