Abstract：
INTRODUCTION:Exercise with limb blood flow restriction (BFR) is a very popular exercise modality in Japan and is spreading widely to the rest of the world. The underlying principle of this training modality is that under the conditions of restricted blood flow, even low-intensity exercise can provide significant muscle strength and hypertrophy. One concern, however, is that BFR during exercise may place unnecessary burden on those with compromised cardiac function. METHODS:We determined the impact of leg BFR during walking on cardiovascular function in 17 young (26 ± 1 yr) healthy volunteers. Each subject underwent five bouts of 2-min treadmill walking at 2 miles·h(-1) with 1-min interval either with or without tourniquet cuffs inflated on both thighs. RESULTS:Heart rate increased more during the BFR session, whereas stroke volume decreased greater during the BFR session. Blood pressure increased significantly and substantially during the BFR session. Consequently, an increase in double product, an index of myocardial oxygen demand, was more than threefold higher in the BFR condition. Systemic arterial compliance evaluated by stroke volume/pulse pressure ratio significantly increased during the control session by 14% but reduced during the BFR condition by 19%. Popliteal artery flow-mediated vasodilation decreased significantly after the exercise with BFR but not after the control session. CONCLUSIONS:Even at low intensity, the aerobic exercise with BFR requires a greater cardiac work and decreases endothelial function. Limb BFR during exercise may need to be more cautiously prescribed to those with compromised cardiac conditions.
journal_name
Med Sci Sports Exercjournal_title
Medicine and science in sports and exerciseauthors
Renzi CP,Tanaka H,Sugawara Jdoi
10.1249/MSS.0b013e3181bdb454subject
Has Abstractpub_date
2010-04-01 00:00:00pages
726-32issue
4eissn
0195-9131issn
1530-0315journal_volume
42pub_type
杂志文章abstract：:It has been postulated that coactivation of antagonist hamstring musculature during active knee extension aids the anterior cruciate ligament (ACL) in maintaining joint stability by exerting an opposing torque to anterior tibial displacement induced by the quadriceps. It was the purpose of this study to compare contra...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：
更新日期：1995-06-01 00:00:00
abstract：PURPOSE:Heart rate (HR) is widely used to adjust exercise intensity in aerobic training. Training HR recommendations are calculated often from simple equations. Because at lactate steady state (LASS) may be an intensity of exercise eliciting similar objective measures of intensity and similar subjective measures of met...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1097/00005768-200205000-00024
更新日期：2002-05-01 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
doi：10.1249/MSS.0b013e3181d0c77b
更新日期：2010-08-01 00:00:00
abstract：INTRODUCTION:It is well established that regular physical activity (PA) contributes to lower levels of morbidity and mortality. However, little is known about the stability of very young children's PA habits across seasons and years. The aims of this study were to 1) examine the influence of season and increasing age o...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/MSS.0b013e3182464db5
更新日期：2012-07-01 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
doi：
更新日期：1995-10-01 00:00:00
abstract：:The knee joints of 81 veteran soccer players between ages 40 and 74 were examined. An analysis of and relationships between soccer practice at a top level, osteoarthritis, meniscectomy, and leg axes were evaluated. One-hundred and sixty-two knees were assessed through clinical examination and X-ray examination using a...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/00005768-198508000-00005
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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：2014-06-01 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
doi：10.1249/MSS.0b013e3181adb9fb
更新日期：2010-01-01 00:00:00
abstract：PURPOSE:This article reports on the findings and recommendations of the "Physiology of Sedentary Behavior and Its Relationship to Health Outcomes" group, a part of a larger workshop entitled Sedentary Behavior: Identifying Research Priorities sponsored by the National Heart, Lung, and Blood Institute and by the Nationa...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/MSS.0000000000000518
更新日期：2015-06-01 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/MSS.0b013e318188446a
更新日期：2009-02-01 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.0000000000001407
更新日期：2018-01-01 00:00:00
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journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1097/00005768-200103000-00015
更新日期：2001-03-01 00:00:00
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journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章,评审
doi：10.1249/MSS.0b013e31828ba942
更新日期：2013-08-01 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：1995-09-01 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.0000069553.47739.36
更新日期：2003-06-01 00:00:00
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journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1097/00005768-199911000-00013
更新日期：1999-11-01 00:00:00
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journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1097/00005768-199707000-00010
更新日期：1997-07-01 00:00:00
abstract：PURPOSE:The primary study aim was to evaluate associations of estimated weekly minutes of moderate-to-vigorous-intensity exercise from self-reports of the telephone-administered 7-Day Physical Activity Recall (7-Day PAR) with data captured by the RT3 triaxial accelerometer. METHODS:This investigation was undertaken as...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章,随机对照试验
doi：10.1249/MSS.0b013e3181984fa8
更新日期：2009-06-01 00:00:00
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journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章,meta分析,评审
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更新日期：2015-07-01 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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journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：
更新日期：1985-02-01 00:00:00
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journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1097/00005768-199807000-00023
更新日期：1998-07-01 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
doi：10.1249/01.mss.0000155400.14813.df
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journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/MSS.0b013e318176b978
更新日期：2008-09-01 00:00:00
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journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1097/00005768-199610000-00029
更新日期：1996-10-01 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.0b013e3182084562
更新日期：2011-07-01 00:00:00
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journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章,评审
doi：
更新日期：1993-06-01 00:00:00
abstract：PURPOSE:Sleep is considered essential for muscle recovery, mainly due to its effect on hormone secretion. Total sleep deprivation or restriction is known to alter not only blood hormones but also cytokines that might be related to skeletal muscle recovery. This study aimed to evaluate whether total sleep deprivation af...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章,随机对照试验
doi：10.1249/MSS.0000000000002137
更新日期：2020-02-01 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：1992-11-01 00:00:00
abstract：INTRODUCTION/PURPOSE:Critical power (CP) is a fundamental parameter defining high-intensity exercise tolerance; however, its physiological determinants are incompletely understood. The present study determined the impact of hyperoxia on CP, the time constant of phase II pulmonary oxygen uptake kinetics (τV˙O2), and mus...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/MSS.0000000000002234
更新日期：2020-05-01 00:00:00
