Abstract:
:To determine the consequences of two different stride frequencies on ventilation (VE) at similar levels of carbon dioxide production (VCO2), eleven male subjects performed two work tests on the treadmill. One test involved walking at a speed of 5 km/hr on a 15% grade while the other consisted of running on the treadmill at 9 km/hr on a 0% grade. Running increased stride frequency by 47%. The running and walking tests resulted in similar VCO2 levels, 1.85 +/- .18 and 1.9 +/- .20 l/min respectively, a non-significant difference. Ventilation during running was 43.73 +/- 6.51 l/min and during walking was 43.26 +/- 6.79 l/min, a non-significant difference. In addition the time constants for oxygen consumption (VCO2), VE and VCO2 were measured. The time constants for VCO2 and VE were not found to differ significantly during either the running or walking test. From our results, it can be seen that VE is more closely aligned to the metabolic state rather than stride frequency. In addition, the coupling of VE and VCO2 during the non-steady state is further indicative that ventilation is linked to the metabolic demands of the body.
journal_name
Br J Sports Medjournal_title
British journal of sports medicineauthors
Berry MJ,Bacharach DW,Moritani Tdoi
10.1136/bjsm.19.4.210subject
Has Abstractpub_date
1985-12-01 00:00:00pages
210-3issue
4eissn
0306-3674issn
1473-0480journal_volume
19pub_type
杂志文章abstract:BACKGROUND:B-mode measurement of the sagital diameter of the Achilles tendon based on a manual tracing (MT) procedure is partly dependent on the subjectivity of the reader. The aim of this study is to establish a standardised automatic procedure to differentiate between normal and chronically degenerated tendons. For t...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.2007.037812
更新日期:2007-12-01 00:00:00
abstract::Sexual harassment and abuse occur in all sports and at all levels with an increased risk at the elite level. The physical and psychological consequences of sexual harassment and abuse are significant for the athlete, their team and for the health and integrity of sport in general. The sports medicine health profession...
journal_title:British journal of sports medicine
pub_type: 杂志文章,评审
doi:10.1136/bjsports-2011-090345
更新日期:2012-10-01 00:00:00
abstract::A total of 266 patients with injuries to the knee sustained during sports activities were managed by arthroscopy and/or arthrotomy. All of them received systemic examination and a standard battery of knee stability tests. Fifty-three were examined by arthrography and all underwent arthrotomy for surgical correction of...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.27.2.87
更新日期:1993-06-01 00:00:00
abstract:BACKGROUND:Little information is available on the effect of strength training on vascular function, particularly in older people. OBJECTIVE:To determine the effect of resistance training on arterial stiffness and endothelial function in older adults. METHOD:Eleven healthy men (mean (SEM) age 64 (1) years) performed 1...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.2006.029538
更新日期:2006-10-01 00:00:00
abstract::Posterior dislocation of the shoulder is an uncommon injury, accounting for between 2% and 4% of all shoulder dislocations. It occurs most frequently in patients following convulsions or direct anterior force to the shoulder. It is a particularly uncommon injury in sport. This paper reports an unusual case of bilateal...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.31.1.74
更新日期:1997-03-01 00:00:00
abstract:OBJECTIVE:To estimate the overall incidence of acute and overuse volleyball injuries, and to describe factors associated with ankle sprains. METHODS:486 players from the second and third Dutch national volleyball divisions participated in the study and were followed prospectively during a whole season. Three measureme...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.2003.005785
更新日期:2004-08-01 00:00:00
abstract::A case of cervical disc herniation occurring in close association with playing football is reported. The handling of neck injuries in football players is outlined. ...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.19.1.43
更新日期:1985-03-01 00:00:00
abstract:AIMS:(1) To investigate whether a daily acute:chronic workload ratio informs injury risk in Australian football players; (2) to identify which combination of workload variable, acute and chronic time window best explains injury likelihood. METHODS:Workload and injury data were collected from 53 athletes over 2 seasons...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsports-2016-096309
更新日期:2017-08-01 00:00:00
abstract:OBJECTIVE:To quantify and describe medically treated sport and active recreation injuries in a defined region of the Latrobe Valley from 7 November 1994 to 6 November 1995. METHOD:A geographic target area was defined, restricted to the six postcodes that fell wholly within the catchment area of the Latrobe Regional Ho...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.37.5.405
更新日期:2003-01-01 00:00:00
abstract:OBJECTIVE:To examine the effects of short-term, medium-term and long-term resistance exercise training (RET) on measures of cardiometabolic health in adults. DESIGN:Intervention systematic review. DATA SOURCES:MEDLINE and Cochrane Library databases were searched from inception to February 2018. The search strategy in...
journal_title:British journal of sports medicine
pub_type: 杂志文章,meta分析
doi:10.1136/bjsports-2017-098970
更新日期:2020-03-01 00:00:00
abstract:OBJECTIVES:The cellular basis of painful tendon overuse pathology (tendinosis) is poorly understood. It has been suggested that because of the close anatomical associations between mast cells and vessels in connective tissues, mast cells may mediate the development of tendon hypervascularity or oedema. OBJECTIVES:To e...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.2007.040212
更新日期:2008-09-01 00:00:00
abstract::The purpose of this study was to examine selected physiological characteristics and pushing performance over a distance of five kilometres (5 km) in twelve wheelchair athletes (10 paraplegics and 2 tetraplegics). The physiological tests and 5 km wheelchair time trials were performed on a motorised treadmill adapted fo...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.21.3.130
更新日期:1987-09-01 00:00:00
abstract::Cycle helmets that meet UK and US standards have been tested. The mechanisms of energy absorption for frontal and side impacts have been analysed. A good helmet should protect the wearer for impacts up to 15 mph into a rigid flat surface. ...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.24.1.55
更新日期:1990-03-01 00:00:00
abstract:OBJECTIVES:(1) Describe the evolution of guideline-endorsed red flags for fracture in patients presenting with low back pain; (2) evaluate agreement between guidelines; and (3) evaluate the extent to which recommendations are accompanied by information on diagnostic accuracy of endorsed red flags. DESIGN:Systematic re...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsports-2018-099525
更新日期:2019-05-01 00:00:00
abstract:BACKGROUND:Ankle sprains are highly prevalent with high risk of recurrence. Consequently, there are a significant number of research reports examining strategies for treating and preventing acute and recurrent sprains (otherwise known as chronic ankle instability (CAI)), with a coinciding proliferation of review articl...
journal_title:British journal of sports medicine
pub_type: 杂志文章,meta分析,评审
doi:10.1136/bjsports-2016-096178
更新日期:2017-01-01 00:00:00
abstract::Promoting physical activity has become a priority because of its role in preventing childhood obesity and chronic disease. Ecological approaches that recognise the interaction between individuals and the settings in which they spend their time are currently at the forefront of public health action. Schools have been i...
journal_title:British journal of sports medicine
pub_type: 杂志文章,评审
doi:10.1136/bjsm.2008.053447
更新日期:2009-01-01 00:00:00
abstract:BACKGROUND:In professional soccer, a significant amount of training time is used to improve players' aerobic capacity. However, it is not known whether soccer specific training fulfils the criterion of effective endurance training to improve maximal oxygen uptake, namely an exercise intensity of 90-95% of maximal heart...
journal_title:British journal of sports medicine
pub_type: 临床试验,杂志文章
doi:10.1136/bjsm.36.3.218
更新日期:2002-06-01 00:00:00
abstract:INTRODUCTION:The incidence of depression is high during the perinatal period. This mood disorder can have a significant impact on the mother, the child and the family. OBJECTIVE:To examine the effect of an exercise programme during pregnancy on the risk of perinatal depression. METHODS:Healthy women who were <16 week...
journal_title:British journal of sports medicine
pub_type: 杂志文章,随机对照试验
doi:10.1136/bjsports-2017-098926
更新日期:2019-03-01 00:00:00
abstract::The effect of time of day on all-out swim performances was examined. Fourteen subjects performed maximal front crawl swim tests on separate days over 100 m. and 400 m. at 5 different times of day between 06.30 h. and 22.00 h. Performance showed a significant linear trend with time of day in close though not exact asso...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.17.2.122
更新日期:1983-06-01 00:00:00
abstract:OBJECTIVES:In this study, serum levels of matrix metalloproteinases (MMPs) and tissue inhibitors of metalloproteinases (TIMPs) between patients with a history of Achilles tendon rupture and blood donor controls were compared, and their relation to mechanical properties of the tendons during healing were studied. METHO...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.2008.049411
更新日期:2010-07-01 00:00:00
abstract:OBJECTIVE:To observe the differences in performance variables of the sit to stand transfer (as measured on the NeuroCom Balance Master) in a population of senior athletes. METHOD:A convenience sample of 173 subjects aged 50 years and older. Data were obtained from voluntary participation in a health fair offered at th...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.2005.018564
更新日期:2005-11-01 00:00:00
abstract:AIM:The purpose of this study was to investigate the relationship between physical workload and injury risk in elite youth football players. METHODS:The workload data and injury incidence of 32 players were monitored throughout 2 seasons. Multiple regression was used to compare cumulative (1, 2, 3 and 4-weekly) loads ...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsports-2015-095820
更新日期:2017-03-01 00:00:00
abstract::The purpose of this study was to describe the anthropometric and physiological parameters that apply to a USA amateur rugby union club team. Fifteen players who were members of the club's first team were evaluated for body composition, muscular strength, power and endurance, flexibility, anaerobic power, anaerobic cap...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.17.1.16
更新日期:1983-03-01 00:00:00
abstract:OBJECTIVES:To investigate the effects of two different regimens of androgenic-anabolic steroid (AAS) administration on serum lipid and lipoproteins, and recovery of these variables after drug cessation, as indicators of the risk for cardiovascular disease in healthy male strength athletes. METHODS:In a non-blinded stu...
journal_title:British journal of sports medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1136/bjsm.2003.000199
更新日期:2004-06-01 00:00:00
abstract:OBJECTIVES:The limiting factors with regard to power output available for wheelchair ambulation have not been identified. The aim of the present study was to correlate power output during wheelchair driving with (i) power output and oxygen uptake during arm crank ergometry and (ii) arm muscle strength. METHODS:Eleven ...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.31.1.41
更新日期:1997-03-01 00:00:00
abstract::Iron deficiency anaemia, and its debilitating effect on performance, is an area of concern for many female athletes. Automated technologies that analyse individual reticulocytes may provide a sensitive measure of bone marrow response to iron supplementation. The reticulocyte characteristics of a female volleyball play...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.32.3.259
更新日期:1998-09-01 00:00:00
abstract:OBJECTIVE:To determine whether the psychological characteristics of athletes who have undergone an anterior cruciate ligament (ACL) reconstruction change during rehabilitation are related to returning to competitive sport. DESIGN:Prospective longitudinal study. METHOD:87 athletes completed the Emotional Response of A...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.2007.044818
更新日期:2009-05-01 00:00:00
abstract::Cardiovascular (CV) screening in young athletes remains challenging and a topic of considerable debate. Recent criticisms of ECG screening have perpetuated arguments that ECG screening is neither indicated nor effective by applying outdated incidence data and flawed methodology. In response, this article provides a cr...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsports-2016-096606
更新日期:2016-11-01 00:00:00
abstract:BACKGROUND:The accurate measurement of physical activity is crucial to understanding the relationship between physical activity and disease prevention and treatment. OBJECTIVE:The primary purpose of this study was to investigate the validity and reliability of the activPAL physical activity monitor in measuring step n...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.2006.027276
更新日期:2006-09-01 00:00:00
abstract::It is now understood that sports injury interventions will not have significant public health impact if they are not widely accepted and adopted by target sports participants. Although there has been increasing recognition of the need for intervention studies conducted within the real-world context of sports delivery,...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsports-2011-090230
更新日期:2011-12-01 00:00:00