Abstract：
PURPOSE:High-intensity interval training (HIIT) represents a potent stimulus to the dynamic oxygen uptake (V˙O2) response in adults, but whether the same is evident in youth is unknown. HIIT has also been suggested to place a lower demand on the respiratory system, decreasing the likelihood of exacerbation in those with respiratory conditions, such as asthma. METHODS:Sixty-nine adolescents (13.6 ± 0.9 yr; 36 asthma) took part, 35 of which (17 asthma) participated in a 30-min HIIT intervention three times a week for 6 months. Each participant completed an incremental ramp test to volitional exhaustion and three heavy-intensity constant work rate tests to determine the dynamic V˙O2, heart rate, and deoxyhemoglobin response at baseline, midintervention, postintervention and at a 3-month follow-up. RESULTS:There was no influence of asthma at baseline or in response to the intervention. Participants in the intervention group demonstrated a faster V˙O2 time constant (τp) after intervention (intervention: 29.2 ± 5.7 s vs control: 34.2 ± 6.5 s; P = 0.003), with these differences maintained at follow-up (intervention: 32.5 ± 5.5 s vs control: 37.3 ± 8.7 s; P = 0.008). The intervention was associated with a speeding of the concentration of deoxyhemoglobin τ (pre: 20.1 ± 4.7 s vs post: 18.2 ± 4.1 s; P = 0.05) compared with a slowing over the same time period in the control participants (pre: 17.9 ± 4.9 s vs post: 20.1 ± 4.6 s; P = 0.012). Heart rate kinetics were not altered (pre: 46.5 ± 12.2 s vs post: 47.7 ± 11.1 s; P = 0.98). CONCLUSION:These findings highlight the potential utility of school-based HIIT as a strategy to enhance the V˙O2 kinetics of youth, regardless of the presence of asthma.
journal_name
Med Sci Sports Exercjournal_title
Medicine and science in sports and exerciseauthors
McNarry MA,Winn CON,Davies GA,Eddolls WTB,Mackintosh KAdoi
10.1249/MSS.0000000000002270subject
Has Abstractpub_date
2020-06-01 00:00:00pages
1322-1329issue
6eissn
0195-9131issn
1530-0315journal_volume
52pub_type
杂志文章abstract：PURPOSE:We examined bilateral bone mineral density (BMD) in the arms of female college gymnasts to assess the relative contribution of high-impact loading forces versus daily activities on bone plasticity. METHODS:Twenty-five female collegiate gymnasts and 25 controls were studied. BMD of the lumbar spine, proximal fe...
journal_title：Medicine and science in sports and exercise
pub_type： 临床试验,杂志文章
doi：10.1097/00005768-200211000-00021
更新日期：2002-11-01 00:00:00
abstract：PURPOSE:Compelling evidence suggests larger performance decrements during hypoxic versus normoxic repeated sprinting. Yet the underlying mechanical alterations have not been thoroughly investigated. Therefore, we examined the effects of different levels of normobaric hypoxia on running mechanical performance during rep...
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.0000000000000937
更新日期：2016-08-01 00:00:00
abstract：:The purpose was to study the effects of skipping rate on energy expenditure and sex differences in response to rope skipping. Responses of 19 males and 11 females were measured while skipping for 5 min at 125, 135 and 145 skips . min-1. Expired air was routed through a hollow handle to collection bags to provide unint...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：
更新日期：1980-01-01 00:00:00
abstract：:Vigorous exercise is associated with a sensation of well-being, and this subjective state has been objectively quantified with psychometric, cardiovascular, and neurophysiological data. Reductions in state anxiety have been demonstrated to follow acute physical activity, and this response persists for 2-5 h. Chronic p...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章,评审
doi：
更新日期：1985-02-01 00:00:00
abstract：INTRODUCTION:Scientists and clinicians have attempted to identify and understand biomechanical factors that influence concussion likelihood. The effect of impact frequency to a given head location before the concussion has not been evaluated. The purpose of this study was to compare the frequency of impacts to a given ...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/MSS.0000000000000896
更新日期：2016-07-01 00:00:00
abstract：OBJECTIVE:To evaluate the effect of chronic moderate-intensity exercise upon the alterations of immune system cell function induced by energy restriction. METHODS:Forty male Wistar rats were randomly assigned to the following groups: sedentary animals fed ad libitum (SF, N = 10) or submitted to energy restriction (SER...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/01.mss.0000147626.32295.38
更新日期：2004-12-01 00:00:00
abstract：INTRODUCTION:Increased sedentary behavior predicts greater cardiovascular morbidity and mortality and does so independently of physical activity (PA). This association is only partially explained by body mass index (BMI) and overall body fat, suggesting mechanisms besides general increased adiposity. The purpose of thi...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/MSS.0b013e3182a77220
更新日期：2014-03-01 00:00:00
abstract：:A 25-yr-old female triathlete presented with 4 d of increasing left calf pain that started 1 d after an elective termination of pregnancy during the eighth week of gestation. She had been training with running, bicycling, and swimming but did not recall any injury to the calf muscle. Deep venous thrombosis of the calf...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：
更新日期：1992-01-01 00:00:00
abstract：UNLABELLED:Although effects of workload and cadence on sagittal plane knee biomechanics in cycling have been widely studied, few studies have examined their impact on the frontal plane. PURPOSE:The purpose of this study was to investigate the effects of different workloads and cadences on knee sagittal and frontal pla...
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.0000000000000759
更新日期：2016-02-01 00:00:00
abstract：PURPOSE:Tibial stress fracture is a common overuse running injury that results from the interplay of repetitive mechanical loading and bone strength. This research project aimed to determine whether female runners with a history of tibial stress fracture (TSF) differ in ground reaction force (GRF) parameters during run...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/01.mss.0000117116.90297.e1
更新日期：2004-03-01 00:00:00
abstract：:This study examined the effects of age and physical activity on body composition and fat distribution by comparing differences between young and older endurance trained men and women with differences between young and older sedentary people. Although indices of total body adiposity (fat mass, percent body fat) were hi...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：
更新日期：1992-07-01 00:00:00
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...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/MSS.0b013e3181bdb454
更新日期：2010-04-01 00:00:00
abstract：INTRODUCTION:Recent data indicate a direct relationship between the sympathetic nervous system and bone metabolism. The purpose of this study was to evaluate the effects of a beta-1 adrenergic (Adrb1) agonist, dobutamine (DOB), on disuse-induced changes in bone integrity during 28 d of hindlimb unloading (HU). METHODS...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/MSS.0b013e31828d39bc
更新日期：2013-09-01 00:00:00
abstract：PURPOSE:The increased physiological demand of pregnancy results in profound adaptation of the maternal cardiovascular system, reflected by greater resting cardiac output and left ventricular (LV) deformation. Whether the increased resting demand alters acute cardiac responses to exercise in healthy pregnant women is no...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/MSS.0000000000002554
更新日期：2020-11-03 00:00:00
abstract：PURPOSE:Muscle injury is the most common sports injury. Muscle stiffness, a risk factor for muscle injury, is lower in females than in males, implying that sex-related genetic polymorphisms influence muscle injury associated with muscle stiffness. The present study aimed to clarify the associations between two genetic ...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/MSS.0000000000001750
更新日期：2019-01-01 00:00:00
abstract：:Relatively few studies have assessed the prospective relationship of sedentary lifestyle and coronary heart disease (CHD) in women. We performed a nested case-control study, identifying 50 cases of acute CHD in women and 150 age-matched controls. Risk factors including sedentary lifestyle, cigarette smoking, hypertens...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：
更新日期：1995-11-01 00:00:00
abstract：:For high-intensity muscular exercise, the time-to-exhaustion (t) increases as a predictable and hyperbolic function of decreasing power (P) or velocity (V ). This relationship is highly conserved across diverse species and different modes of exercise and is well described by two parameters: the "critical power" (CP or...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章,评审
doi：10.1249/MSS.0b013e3181d9cf7f
更新日期：2010-10-01 00:00:00
abstract：:In this study the gross efficiency of swimming was determined in a group of male (N = 6) and female (N = 4) competitive swimmers. The gross efficiency is defined as the ratio of the power output (W) to the power input (W). In a range of swimming velocities (0.95-1.6 m.s-1), the power input (rate of energy expenditure,...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：
更新日期：1990-06-01 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
abstract：PURPOSE:Recent literature suggests that subconcussive impacts may influence cognitive functioning across the life span. These effects are suggested to manifest as functional and possibly structural changes. Head impact biomechanics during American football have been characterized from the high school to professional le...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/MSS.0b013e3182798758
更新日期：2013-04-01 00:00:00
abstract：:Recently, Sarna et al. (Med. Sci. Sports Exerc. 25:237-244, 1993) reported increased mean life expectancy in former world class athletes. Because lifestyle is associated with longevity, we have examined whether health habits of former Finnish male athletes (N = 1274; present mean age: 57.5, range: 36-94 yr) differed f...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/00005768-199402000-00013
更新日期：1994-02-01 00:00:00
abstract：PURPOSE:To compare the maximum oxygen uptake V0(2max) of elite endurance athletes and to explain why the body mass exponent, necessary to render V0(2max) independent of body mass, appears to be greater than 0.67. METHODS:Study 1: V0(2max) of 174 international sportsmen and women was assessed. Athletes were recruited f...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/01.MSS.0000053728.12929.5D
更新日期：2003-03-01 00:00:00
abstract：PURPOSE:To investigate the use of Tritrac accelerometers to measure energy expenditure (EE) of various activities for women in the field setting, as compared with portable indirect calorimetry. METHODS:Twenty women (age 20-29) performed a choreographed routine of six activities (walking, jogging, stair climbing, walki...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1097/00005768-200210000-00020
更新日期：2002-10-01 00:00:00
abstract：:Acute bouts of aerobic exercise have been consistently associated with significant reductions in anxiety, but explanations for this effect remain elusive. The cerebral lateralization hypothesis predicts that anxiety reductions would be caused by a postexercise decrease in anterior right, relative to left, hemisphere a...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：
更新日期：1994-08-01 00:00:00
abstract：PURPOSE:The purpose of this study was to determine whether increased intraluminal pressure is the damaging factor that reduces flow-mediated dilation (FMD) in young, healthy subjects after resistance exercise to maximal exertion. HYPOTHESIS:Attenuating the rise in brachial artery pressure during weight lifting by plac...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/MSS.0000000000001150
更新日期：2017-04-01 00:00:00
abstract：PURPOSE:Few epidemiological studies have been conducted among middle-aged women on long-term total and specific physical activity (PA) trends. We studied in a cross-sectional setting the relationship of self-reported total daily PA with age and calendar time. METHODS:In a population-based cohort of 38,988 women aged 4...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/01.mss.0000185086.19220.b3
更新日期：2006-02-01 00:00:00
abstract：PURPOSE:Exercise improves the diagnostic performance of ankle-to-brachial index (ABI) in the detection of exercise-induced arterial endofibrosis (EIAE). Pressure values for all four limbs are required to calculate ABI, but rapid systemic pressure changes occur during the recovery period from exercise. We checked whethe...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/01.mss.0000232021.21361.9c
更新日期：2006-11-01 00:00:00
abstract：PURPOSE:Regular physical activity leads to a more favorable cardiovascular risk factor profile and a lower risk of developing incident coronary heart disease (CHD). These correlations suggest that higher levels of physical activity should also attenuate the presence and extent of coronary atherosclerosis. METHODS:Phys...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1097/00005768-200202000-00008
更新日期：2002-02-01 00:00:00
abstract：PURPOSE:This study aimed to examine the effects of footwear and neuromuscular fatigue induced by short distance trail running (TR) on running economy (RE) and biomechanics in well-trained and traditionally shod runners. METHODS:RE, vertical and leg stiffness (Kvert and Kleg), as well as foot strike angle were measured...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1249/MSS.0000000000000981
更新日期：2016-10-01 00:00:00
abstract：PURPOSE:The objectives of this study were to: 1) establish a database of kinematic and EMG data during cutting movements, 2) describe normal muscle function and coordination of 12 lower extremity muscles during cutting movements susceptible to ankle sprains, and 3) identify potential muscle coordination deficiencies th...
journal_title：Medicine and science in sports and exercise
pub_type： 杂志文章
doi：10.1097/00005768-199902000-00014
更新日期：1999-02-01 00:00:00
