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training load

Youngin Choi, Jungsuk Roh
[Purpose] The present study aimed to analyze and compare the activity profile and physiological responses of amateur football referees during competitive matches of high school and college students. [Subjects and Methods] Thirty referees (high school, 15; college, 15) were included in this study. The total distance covered, movement speed, and heart rate were measured using a global positioning system-enabled wireless heart rate monitor. The blood lactate concentration was measured immediately after the first and second half...
February 2018: Journal of Physical Therapy Science
Linda Resnik, He Helen Huang, Anna Winslow, Dustin L Crouch, Fan Zhang, Nancy Wolk
BACKGROUND: Although electromyogram (EMG) pattern recognition (PR) for multifunctional upper limb prosthesis control has been reported for decades, the clinical benefits have rarely been examined. The study purposes were to: 1) compare self-report and performance outcomes of a transradial amputee immediately after training and one week after training of direct myoelectric control and EMG pattern recognition (PR) for a two-degree-of-freedom (DOF) prosthesis, and 2) examine the change in outcomes one week after pattern recognition training and the rate of skill acquisition in two subjects with transradial amputations...
March 15, 2018: Journal of Neuroengineering and Rehabilitation
Linda D Cameron, Paul Carroll, W Kyle Hamilton
This phase II trial evaluated psychosocial and health outcomes of an intervention designed to improve emotion regulation skills in adults suffering from Adverse Childhood Experiences (ACEs). The study utilized a pretest-posttest design in which 92 adults enrolled in the community-based program completed pretest measures, attended either a faith-based or secular version of the 12-week ACE Overcomers program, and then completed posttest measures. The theory-guided program involved group sessions providing education and skills training to improve emotion regulation, self-awareness, resilience, and social functioning...
March 12, 2018: Child Abuse & Neglect
Daniel Langer, Casey E Ciavaglia, Azmy Faisal, Katherine A Webb, J Alberto Neder, Rik Gosselink, Sauwaluk Dacha, Marko Topalovic, Anna Ivanova, Denis E O'Donnell
Among patients with COPD, those with the lowest maximal inspiratory pressures experience greater breathing discomfort (dyspnea) during exercise. In such individuals, inspiratory muscle training (IMT) may be associated with improvement of dyspnea but the mechanisms for this are poorly understood. Therefore, we aimed to identify physiological mechanisms of improvement in dyspnea and exercise endurance following inspiratory muscle training (IMT) in patients with COPD and low maximal inspiratory pressure (Pi,max)...
March 15, 2018: Journal of Applied Physiology
Lilian Roos, Wolfgang Taube, Carolin Tuch, Klaus Michael Frei, Thomas Wyss
PURPOSE: Session rating of perceived exertion (sRPE) is an often used measure to assess athletes' training load. However, little is known which factors could optimize the quality of data collection thereof. The aim of the present study was to investigate the effects of (i) the survey methods and (ii) the time points when sRPE was assessed on the correlation between subjective (sRPE) and objective (heart rate training impulse; TRIMP) assessment of training load. METHODS: In the first part, 45 well-trained subjects (30 men, 15 women) performed 20 running sessions with a heart rate monitor and reported sRPE 30 minutes after training cessation...
March 15, 2018: International Journal of Sports Physiology and Performance
Jahan Heidari, Jürgen Beckmann, Maurizio Bertollo, Michel Brink, Wolfgang Kallus, Claudio Robazza, Michael Kellmann
Monitoring of recovery in the context of athletic performance has gained significant importance during recent years. As a systematic process of data collection and evaluation, the monitoring of recovery can be implemented for various purposes. It may aid to prevent negative outcomes of training or competition, such as underrecovery, overtraining, or injuries. Further, it aims at establishing routines and strategies necessary to guarantee athletes' readiness for performance by restoring their depleted resources...
March 15, 2018: International Journal of Sports Physiology and Performance
Monica Taylor, Elizabeth F Nagle, Fredric L Goss, Elaine N Rubinstein, Andrew Simonson
Monitoring an athlete's energy intake and energy expenditure (EE) is an important consideration of nutritional planning for sport conditioning and peak performance. In order to provide appropriate recommendations regarding nutritional requirements and caloric needs, an accurate determination of energy requirements is necessary. By knowing an individual's EE, a coach, athletic performance staff or trainer can effectively determine training loads and volumes necessary for periodization and seasonal planning for a particular sport...
2018: International Journal of Exercise Science
Naoki Kikuchi, Koichi Nakazato
Aim: To investigate the effect of push-up training with a similar load of to 40% of 1- repetition maximumal (1RM) bench press on muscle hypertrophy and strength gain in men. Methods: Eighteen male participants (age, 20.2 ± 0.73 years, range: 19-22 years, height: 169.8 ± 4.4 cm, weight: 64.5 ± 4.7 kg) were randomly assigned to one of two experimental groups: bench press at 40%1RM (bench-press group, n = 9) or push-ups with position adjusted (e.g. kneeling) to the same load of bench-press 40%1RM (push-up group, n = 9), performed twice per week for 8 weeks...
June 2017: Journal of Exercise Science and Fitness
Christopher McCrum, Pamela Leow, Gaspar Epro, Matthias König, Kenneth Meijer, Kiros Karamanidis
Tendons transfer forces produced by muscle to the skeletal system and can therefore have a large influence on movement effectiveness and safety. Tendons are mechanosensitive, meaning that they adapt their material, morphological and hence their mechanical properties in response to mechanical loading. Therefore, unloading due to immobilization or inactivity could lead to changes in tendon mechanical properties. Additionally, ageing may influence tendon biomechanical properties directly, as a result of biological changes in the tendon, and indirectly, due to reduced muscle strength and physical activity...
2018: Frontiers in Physiology
Simone de Campos Neitzke Winter, Rafael Michel de Macedo, Júlio Cesar Francisco, Paula Costa Santos, Ana Paula Sarraff Lopes, Leanderson Franco de Meira, Katherine A Teixeira de Carvalho, José Rocha Faria Neto, Ana Carolina Brandt de Macedo, Luiz César Guarita-Souza
BACKGROUND: Physical exercise should be part of the treatment of post-acute myocardial infarction (AMI) patients. OBJECTIVE: To evaluate the effects of two training prescription models (continuous x interval) and its impact on ventricular function in rats after AMI with normal ventricular function. METHODS: Forty Wistar rats were evaluated by echocardiography 21 days after the AMI. Those with LVEF = 50% (n = 29) were included in the study and randomized to control group (CG n = 10), continuous training group (CTG n = 9) or interval training group (ITG, n = 10)...
March 12, 2018: Arquivos Brasileiros de Cardiologia
Jeffrey T Parsons, Steven A John, Brett M Millar, Tyrel J Starks
Prior research has identified subgroups of HIV-positive gay and bisexual men (GBM) based upon information, motivation, and behavioral skills (IMB) profiles related to HIV medication adherence and methamphetamine use. We conducted a randomized controlled trial of a combined motivational interview (MI) and cognitive behavioral therapy (CBT) intervention tailored specifically to the unique context of HIV-positive GBM, and tested whether IMB profiles moderated treatment effects. HIV-positive GBM (N = 210) were randomized to MI + CBT or an attention-matched education control...
March 13, 2018: AIDS and Behavior
Harry M Roberts, Jonathan P Moore, Jeanette M Thom
PURPOSE: To compare the serum cartilage oligomeric matrix protein (COMP) and hyaluronan (HA) response to walking (high-repetition loading) and resistance training exercise (low-repetition loading) in males and females. METHODS: 15 males (age: 28 ± 6 years; BMI: 24 ± 2; mean ± SD) and 15 females (age: 26 ± 4 years; BMI: 23 ± 2) completed both a 40-min walk at 80% of maximum heart rate and a 40-min lower body resistance training protocol, separated by a minimum of 48 h...
March 13, 2018: European Journal of Applied Physiology
Alireza Esmaeili, Andrew M Stewart, William G Hopkins, George P Elias, Brendan H Lazarus, Amber E Rowell, Robert J Aughey
Aim: The sit and reach test (S&R), dorsiflexion lunge test (DLT), and adductor squeeze test (AST) are commonly used in weekly musculoskeletal screening for athlete monitoring and injury prevention purposes. The aim of this study was to determine the normal week to week variability of the test scores, individual differences in variability, and the effects of training load on the scores. Methods: Forty-four elite Australian rules footballers from one club completed the weekly screening tests on day 2 or 3 post-main training (pre-season) or post-match (in-season) over a 10 month season...
2018: Frontiers in Physiology
James P Fisher
No abstract text is available yet for this article.
March 2018: Journal of Sports Science & Medicine
Summer B Cook, Brendan R Scott, Katherine L Hayes, Bethany G Murphy
Low-load blood flow restricted (BFR) resistance exercise has been suggested to be as effective as moderate and high-load resistance training for increasing muscle size and strength. The purpose of the study was to evaluate the effects of 6 weeks of HL or low-load BFR resistance training on neuromuscular function, strength, and hypertrophy of the knee extensors. Eighteen participants aged 18-22 years old were randomized to one of three training groups: moderate load (ML: 70% of 1 repetition maximum [1-RM]); BFR (20% 1-RM with a vascular restriction set to ~180 mmHg); and a control group (CON) that did not exercise...
March 2018: Journal of Sports Science & Medicine
Abdul-Mutala Fuseini, Mohammad Hossein Rahimi, Mehdi Mollahosseini, Mir Saeed Yekaninejad, Zhila Maghbooli, Khadijeh Mirzaei
OBJECTIVE: The role of dietary glycemic index (GI) and glycemic load (GL) in the development of obesity has been debated globally. The relationship with body shape and fat distribution was examined in this cross-sectional association study among apparently healthy Iranian adults. METHODS AND MATERIALS: A study population of 265 (126 males and 139 females) aged 18-55 years participated in this cross-sectional study from the communities of Tehran based on cluster sampling...
March 13, 2018: Journal of the American College of Nutrition
Felix Fischer, Christian Hoser, Cornelia Blank, Wolfgang Schobersberger, Caroline Hepperger, Peter Gföller, Christian Fink
PURPOSE AND HYPOTHESIS:  With its load characteristics, the team sport of football places high physical demands on players and thus is associated with a high risk of injury. Therefore, the purpose of this study was to collect information about injuries suffered by football players in Austria during training or matches to enable participating clubs to learn about injuries. METHODS:  One hundred and forty-five players from seven teams with age ranging from 16 to 38 years participated in this prospective study during the 2015/16 season...
March 12, 2018: Sportverletzung Sportschaden: Organ der Gesellschaft Für Orthopädisch-Traumatologische Sportmedizin
Victoria Flores, James Becker, Eric Burkhardt, Joshua Cotter
The back squat exercise is typically practiced with varying squat depths and barbell loads. However, depth has been inconsistently defined, resulting in unclear safety precautions when squatting with loads. Additionally, females exhibit anatomical and kinematic differences to males which may predispose them to knee joint injuries. The purpose of this study was to characterize peak knee extensor moments (pKEMs) at three commonly practiced squat depths of above parallel, parallel, and full depth, and with three loads of 0% (unloaded), 50%, and 85% depth-specific one repetition maximum (1RM) in recreationally active females...
March 6, 2018: Journal of Strength and Conditioning Research
Timothy J H Lathlean, Paul B Gastin, Stuart Newstead, Caroline F Finch
Well-developed physical qualities such as high jumping ability, running endurance, acceleration and speed can help aspiring junior elite Australian football (AF) players transition to the Australian Football League competition. In order to do so, players need to experience sufficient load in order to enhance their physical resilience without increasing their risk of negative outcomes in terms of impaired wellness or injury. The aim of this study was to investigate the differences in load for different levels of competition and training modes across one competitive season...
March 6, 2018: Journal of Strength and Conditioning Research
Jonas Verbrugghe, Anouk Agten, Bert O Eijnde, Enzo Olivieri, Xavier Huybrechts, Henk Seelen, Frank Vandenabeele, Annick Timmermans
BACKGROUND: Although low to moderate intensity exercise therapy is a predominant part of rehabilitation in nonspecific chronic low back pain (NSCLBP), effect sizes are small and optimal exercise modalities/intensities are unclear. Conversely, effects of high intensity training have not yet been investigated in this population. OBJECTIVE: The aim of this study is to investigate the feasibility of high intensity training (HIT) and to explore the magnitude of the effects of a HIT program may have on exercise capacity and disease related outcome measures compared to conventional therapy for persons with NSCLBP...
March 2, 2018: Journal of Back and Musculoskeletal Rehabilitation
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