The critical velocity (CV) model offers an opportunity to prescribe and to test empirically different velocity-time (V-t) configurations of high-intensity interval training (HIIT); however, such experiments are lacking. We evaluated a group of competitive, female soccer players (age = 19 ± 1 y, height = 168 ± 6 cm, mass ...

The aim of the present study was to examine positional differences in physical performance measures of professional, semi-professional and junior elite Rugby League match-play using portable Global Positioning Systems (GPS). Twelve professional, twelve semi-professional and eighteen junior elite male Rugby League players were monitored during five regular season competition matches ...

The aim of this study was to compare two different methodological assessments when analysing the relationship between performance and heart rate derived indices (resting heart rate (RHR) and heart rate variability (HRV)) in order to evaluate positive adaptation to training. The relative change in estimated maximum aerobic speed (MAS) and ...

BACKGROUND: Previous studies from our group have shown that "pure" eccentric exercise performed on an isokinetic dynamometer can induce health-promoting effects that may improve quality of life. In order to investigate whether the benefits of "pure" eccentric exercise can be transferred to daily activities, a new and friendlier way to ...

Non-steroidal anti-inflammatory drugs (NSAIDs) are widely consumed in relation to pain and injuries in skeletal muscle, but may adversely affect muscle adaptation probably via inhibition of prostaglandin synthesis. Induction of heat shock proteins (HSP) represents an important adaptive response in muscle subjected to stress, and in several cell types including ...

Metabolic rates of aquatic organisms are estimated from measurements of oxygen consumption rates (O2) through swimming and resting respirometry. These distinct approaches are increasingly used in eco- and conservation physiology studies; however, few studies have tested whether they yield comparable results. We examined whether two fundamental O2 measures, standard metabolic ...

Purpose: To examine changes in sagittal (APLAX), frontal (VVLAX) and transverse (IERLAX) plane knee laxity in men and women during an intermittent exercise protocol (IEP) simulating the intensity and duration of a soccer match.Methods: Intercollegiate/club athletes (29F,30M) were measured on APLAX (-90-130N) pre and post warm-up, and every 15' during ...

Purpose: The visual search behaviors and thought processes underpinning anticipation and how these are influenced by intermittent exercise was examined in high- and low-level soccer players. Methods: High- (N = 8) and low-level (N = 8) players completed a soccer-specific, intermittent exercise protocol that simulated the demands of a match ...

Although the requirements for heat dissipation during exercise are determined by the necessity for heat balance, few studies have considered them when examining sweat production and its potential modulators. Rather, the majority of studies have used an experimental protocol based on a fixed percent of maximum oxygen uptake (%VO2max). Using ...

ObjectiveIrrespective of their cardiovascular findings, quality of life in patients with congenital heart disease (CHD) is good or even superior to that in healthy controls. The sense of coherence (SOC), a psychological resource that focuses on factors that support human health and well-being, was suggested to act as a potential ...

Quantity and timing of protein ingestion are major factors regulating myofibrillar protein synthesis (MPS). However, the effect of specific ingestion patterns on MPS throughout a 12 h period is unknown. We determined how different distribution of protein feeding during 12 h recovery after resistance exercise affects anabolic responses in skeletal ...

There has been long-standing debate as to whether intense endurance exercise provokes acute myocardial damage and whether cardiac remodeling associated with long-standing endurance training is entirely physiological. Despite the lack of concrete evidence on either side, the potential for serious clinical consequences, including life-threatening arrhythmias, elevates the importance of the ...

Patients with lung cancer often experience a reduction in exercise tolerance, muscle weakness and decreased quality of life. Although the effectiveness of pulmonary rehabilitation programs is well recognized in other forms of cancers and in many pulmonary diseases, few researchers have studied its impact in patients with lung cancer, particularly ...

The normative values of exercise capacity used for the interpretation of exercise testing results are influenced by a variety of internal and external factors specific to certain populations. Therefore, in clinical practice it is recommended that population-specific reference values be employed. Cardiorespiratory fitness norms have not yet been established for ...

Background & objectives: Patients with head and neck cancer (HNC) undergoing chemoradiotherapy (CRT) suffer from fatigue causing a decrease in functional capacity and quality of life (QoL). Limited research in the field of exercise training among these patients demanded the need for this study to assess the effects of exercise ...

ABSTRACT: Noreen, EE, Buckley, JG, Lewis, SL, Brandauer, J, and Stuempfle, KJ. The effects of an acute dose of Rhodiola rosea on endurance exercise performance. J Strength Cond Res 27(3): 839-847, 2013-The purpose of this study was to determine the effects of an acute oral dose of 3 mg·kg of ...

Objectives: As adults with cerebral palsy (CP) are surviving longer, interventions are needed to reduce spasticity and increase strength to improve mobility and life quality. Adults with CP are lacking a form of independent exercise that allows them to maintain or improve their ambulation skills. A new approach to increase ...

Abstract Background: Ticagrelor is a direct-acting, reversibly binding, oral P2Y12 platelet inhibitor that reduces thrombotic cardiovascular events in patients with acute coronary syndrome. Dyspnea is one of the most commonly reported adverse events associated with ticagrelor. Objective: To determine the effect of ticagrelor on pulmonary function in healthy elderly volunteers ...

We examined the effects of consuming a 6% carbohydrate (CHO) beverage during exercise on substrate oxidation in active, young Caucasian women with higher body fat (HF) (>25%) and lower body fat (LF) (<25%). The HF group (n = 9) had 32.4% ± 5.6% fat and the LF group (n = ...

BACKGROUND AND PURPOSE:: Decreased physical activity levels are an increasing concern, specifically for the aging population. Older adults (>65 years) are able to achieve health benefits from participating in a regular exercise program based on studies done in younger community-dwelling older adults. There is less research investigating the efficacy of ...

Purpose: This study aimed to quantify changes in heart rate (HR) and movement speeds in interchanged and whole-match players during 35 elite rugby league performances. Methods: Performances were separated into whole match, interchange bout 1, and interchange bout 2 and further subdivided into match quartiles. Mean percentages of peak HR ...

Purpose: This study examined parameters derived from both an incremental step-wise and a ramp-wise graded rowing exercise test in relation to rowing performance. Methods: Discontinuous step-wise incremental rowing to exhaustion established lactate threshold (LT), maximum oxygen consumption (VO2maxSTEP), and power associated with VO2max (W VO2max). A further continuous ramp-wise test ...

Purpose: The purpose of this study was to determine if Yo-Yo Intermittent Recovery level 2 (Yo-Yo IR2) and the number of interchange rotations affected the match activity profile of elite Australian footballers. Method: Fifteen elite Australian footballers completed the Yo-Yo IR2 before the beginning of the season and played across ...

OBJECTIVE: To determine the relative aerobic load, walking speed and walking economy of older adults with a lower limb prosthesis, and to predict the effect of an increased aerobic capacity on their walking ability. DESIGN: Cross-sectional. SETTING: Human motion laboratory at a rehabilitation center. PARTICIPANTS: A convenience sample of 36 ...

To assess Cardio-respiratory fitness (CF) markers among university students using a 20m shuttle run test (SRT). Markers of CF were assessed in 80 males aged 21.4±1.8 years, randomly selected from Moi University, Kenya. Assessed at different stages of SRT protocol included heart rate (HR), systolic and diastolic blood pressure (SBP ...

The cardiac diving response, 12-lead electrocardiogram (ECG) and the prevalence, time of onset, and possible associations of cardiac arrhythmias were examined during deep breath-hold (BH) dives. Nine elite BH divers (33.2 +/- 3.6 years; mean +/- SD) performed one constant-weight dive of at least 75% of their best personal performance ...

BACKGROUND:: Falls are a verified cause of morbidity and mortality in adults older than 65 years. Exercise under the direction of a physical therapist has been shown to reduce the risk of falls in older adults; however, it is not clear whether physical therapist-directed group-based exercise could produce similar results. ...

PURPOSE: In this qualitative study, we aimed to explore cancer survivors' experiences with (1) return to work (RtW) and work performance, (2) a physical exercise program after treatment, and (3) the perceived link between physical exercise and work. METHODS: Semi-structured individual interviews were held with ten cancer survivors of working ...

INTRODUCTION: Chronic obstructive pulmonary disease (CPOD) is a severe, incapacitating pathology. Inspiratory and/or expiratory muscle training may favorably impact the indicators of both specific and general improvement with regard to this disease. We are hypothesizing that when combined with bronchial decluttering, this training will have a beneficial effect on lung ...

The purpose of this study was to quantify the components of acceleration, load range and deceleration through a velocity spectrum during concentric hip abduction and adduction isokinetic exercise, and to investigate the effect of load range on peak torque and work done. 16 male healthy subjects performed 3 maximal concentric ...

The aim of this study was to test the efficacy of the BEX Runner palm cooling device during a combination of exercise and environmental heat stress. Twelve subjects completed two randomly ordered time-to-exhaustion runs at 75% VO2max, 30 °C, and 50% relative humidity with and without palm cooling. Time to ...

The effects of high-intensity, short-duration, re-warm-ups on team-sport-related performance were investigated. In a randomised, cross-over study, participants performed 2×26-min periods of an intermittent activity protocol (IAP) on a non-motorized treadmill, interspersed by 15-min of passive recovery (CON); 3-min small-sided game (SSG); or a 5RM leg-press. Measures included counter-movement jump, repeated-sprint, ...

Examining exercise as a single goal-directed behaviour, without acknowledging the influence of other concurrent goals, may oversimplify the self-regulation needed in daily life. Concurrent self-regulatory efficacy, confidence in one's ability to self-regulate the management of multiple goals, was explored as a potential mediator in the relationship between value of an ...

We performed a systematic review and meta-analysis evaluating the effectiveness of exercise interventions compared with usual care on physical fitness, fatigue and health-related quality of life in patients with hematologic malignancies treated with stem cell transplantation. Electronic databases were searched up to June 2012. We included randomized controlled trials comparing ...

Resistance exercise has great potential to aid in the management of breast cancer-related lymphedema (BCRL), but little is known regarding the acute response of performing resistance exercises with the affected limb. PURPOSE: To examine the acute impact of upper body resistance exercise on the amount of swelling and severity of ...

Objective: This study evaluated whether social-cognitive theory (SCT) variables, as measured by questionnaire and ecological momentary assessment (EMA), predicted exercise in endometrial cancer survivors. Method: One hundred posttreatment endometrial cancer survivors received a 6-month home-based exercise intervention. EMAs were conducted by using hand-held computers for 10- to 12-day periods every ...

ABSTRACT: The aim of this study was to examine the match physical demands and exercise intensity associated with men rugby union refereeing using GPS technology. Ten male rugby union referees (age, 37.1 ± 5.9 years; body mass, 83.7 ± 4.8 kg; height, 175.5 ± 6.2 cm) were analyzed 2-4 times ...

INTRODUCTION: Understanding the mechanical and morphological adaptation of the Achilles tendon in response to acute exercise could have important implications for athletic performance, injury prevention and rehabilitation. The purpose of this study was to conduct a systematic review and critical evaluation of the literature to determine the immediate effect of ...

ABSTRACT: The purpose of this study was to examine the effects of a crossfit-based high intensity power training (HIPT) program on aerobic fitness and body composition. Healthy subjects of both genders (23 males, 20 females) spanning all levels of aerobic fitness and body composition completed 10 weeks of HIPT consisting ...

ABSTRACT: It has been proposed that fatigue during strength exercise is negatively influenced by prior proprioceptive neuromuscular facilitation stretching (PNF). However, it is possible that the effects of PNF on muscle endurance are affected by stretching duration. This study investigated the influence of PNF on the number of repetitions of ...

BACKGROUND: To optimize bariatric surgery results, experts recommend regular practice of physical activity. However, no precise recommendations are available for the pre-surgical period. We aimed to evaluate, in this pilot study, the feasibility of a supervised Pre-Surgical Exercise Training (PreSET) and its short-term clinical impacts in subjects awaiting bariatric surgery. ...

ABSTRACT: This study aimed to verify the short-term after-effects of a soccer match on senior players' all-out and inter-limb coordination performances. Right before (pre-match) and after (post-match) a match, 10 senior (52.3±10.2years) male soccer players were administered jump (countermovement jump [CMJ]; repeated jump [RJ]), sprint (10m and 10m while dribbling ...

ABSTRACT BACKGROUND: The success of pulmonary rehabilitation (PR) is established, but how to sustain benefits over the long-term is less clear. The aim of this systematic review was to determine the effect of supervised exercise programs after primary PR on exercise capacity and health-related quality of life (HRQL) in individuals ...

Objective:The aim of this study was to explore feasibility, safety and outcome of an exercise intervention in people with Huntington's disease.Design:A randomized controlled pilot trial.Setting:A home-based exercise programme.Subjects:A total of 25 subjects with early to mid-stage Huntington's disease.Intervention:Subjects were randomly allocated to either an exercise intervention (n = 13) or ...

ABSTRACT: BACKGROUND: Exercise training is of benefit for patients with restrictive lung disease. However, it tends to be intolerable for those with severe disease. We examined whether providing ventilatory assistance by using negative pressure ventilators (NPV) during exercise training is feasible for such patients and the effects of training. METHODS: ...

QUESTION In patients with chronic heart failure, does a 10-year exercise program improve functional capacity and quality of life? METHODS DESIGN Randomized controlled trial. ALLOCATION {Concealed}*.† BLINDING Blinded† ({health care providers, data collectors}*, outcome assessors, data analysts, and {safety committee}*). FOLLOW-UP PERIOD 10 years. SETTING Coronary clubs (nonprofit associations of ...

OBJECTIVE: This study determinedthe hormonal and subjective appetite responses to exercise (1-h continuous v. intermittent exercise throughout the day) in obese individuals. DESIGN AND METHODS: Eleven obese subjects (>30 kg/m(2) ) underwent 3, 12-hour study days: control condition (sedentary behavior-SED), continuousexercise condition ((EX) 1-h exercise), and intermittentexercisecondition ((INT) 12 hourly, ...

ABSTRACT The purpose of this case report was to describe the use of the Nintendo® Wii Fit Plus as an alternative exercise for an 11-year-old child with primary Raynaud's disease (PRD) and obesity who was not involved in organized sports and had limited outdoor physical activity and exercise. The Wii ...

During non-steady-state exercise, dynamic changes in pulmonary oxygen uptake ([Formula: see text]) are dissociated from skeletal muscle [Formula: see text] ([Formula: see text]) by changes in lung and venous O(2) concentrations (CvO(2)), and the dynamics and distribution of cardiac output (CO) between active muscle and remaining tissues ([Formula: see text]). ...

Fatigue is one of the most common and most distressing problems in lymphoma patients. A vicious circle is presumed between fatigue, physical activity and physical fitness. It is plausible that an exercise training program would be effective in reducing fatigue, by breaking this vicious circle. The purposes of this review ...