scholarly journals Intensity Classification of Drills for a Collegiate Women’s Lacrosse Team: An Observational Study

Author(s):  
Kathryn H. Alphin ◽  
Brynn L. Hudgins ◽  
Jennifer A. Bunn

Background: Balancing training load helps prevent injury and maximize performance, but coaches do not often know the load or intensity of drills when making selections for practice. Objective: This study aimed to classify the drills of a women’s collegiate lacrosse team into low, moderate, and high intensity categories. Methods: Twenty-five participants wore global positioning system (GPS) devices and heart rate (HR) monitors daily during team practice and scrimmage matches. The data collected was trimmed to reflect only the time the players practiced and then organized by drill. Mean HR, distance rate, and training impulse (TRIMP) scores were used to classify drills into tertiles: low, moderate, and high intensity. Results: A total of 56 unique drills were analyzed over 33 training days, with 24 drills considered moderate intensity, 17 drills were high intensity, and 15 drills were low intensity. By position, 17 drills were low intensity for the midfielders, followed by 16 for the attacker, and 12 for the defenders and goalies. The defenders had the highest number of moderate intensity drills with 27, followed by the attackers with 24, midfielders with 21, and goalies with 17. Lastly, midfielders and goalies had the highest number of high intensity drills with 18, followed by attackers with 17, and defenders with 16. Conclusions: These results will help the coaching and training staff manage workloads and potentially reduce risk of injury and overtraining by giving insight into the demands of each drill they require of their athletes.

2015 ◽  
Vol 43 (3) ◽  
pp. 374-380 ◽  
Author(s):  
Amanda Branson ◽  
Roz Shafran

Background:Evidence exists for a relationship between individual characteristics and both job and training performance; however relationships may not be generalizable. Little is known about the impact of therapist characteristics on performance in postgraduate therapist training programmes.Aims:The aim of this study was to investigate associations between the grades of trainee Low-Intensity and High-Intensity cognitive behavioural therapists and individual characteristics.Method:Trainee Low-Intensity (n= 81) and High-Intensity (n= 59) therapists completed measures of personality and cognitive ability; demographic and course grade data for participants were collected.Results:Degree classification emerged as the only variable to be significantly associated with performance across assessments and courses. Higher undergraduate degree classifications were associated with superior academic and clinical performance. Agreeableness was the only dimension of personality to be associated (positively) with clinical skill. Age was weakly and negatively associated with performance.Conclusions:Relationships between individual characteristics and training outcomes are complex and may be context specific. These results could have important implications for the selection and development of therapists for Low or High-Intensity cognitive behavioural therapy (CBT) training.


2008 ◽  
Vol 42 (12) ◽  
pp. 1051-1059 ◽  
Author(s):  
David Forbes ◽  
Virginia Lewis ◽  
Ruth Parslow ◽  
Graeme Hawthorne ◽  
Mark Creamer

Objectives: Post-traumatic stress disorder (PTSD) is a difficult-to-treat sequel of combat. Data on effectiveness of alternate treatment structures are important for planning veterans’ psychiatric services. The present study compared clinical presentations and treatment outcomes for Australian veterans with PTSD who participated in a range of models of group-based treatment. Method: Participants consisted of 4339 veterans with combat-related PTSD who participated in one of five types of group-based cognitive behavioural programmes of different intensities and settings. Data were gathered at baseline (intake), as well as at 3 and 9 month follow up, on measures of PTSD, anxiety, depression and alcohol misuse. Analyses of variance and effect size analyses were used to investigate differences at intake and over time by programme type. Results: Small baseline differences by programme intensity were identified. Although significant improvements in symptoms were evident over time for each programme type, no significant differences in outcome were evident between programmes. When PTSD severity was considered, veterans with severe PTSD performed less well in the low-intensity programmes than in the moderate- or high-intensity programmes. Veterans with mild PTSD improved less in high-intensity programmes than in moderate- or low-intensity programmes. Conclusion: Comparable outcomes are evident across programme types. Outcomes may be maximized when veterans participate in programme intensity types that match their level of PTSD severity. When such matching is not feasible, moderate-intensity programmes appear to offer the most consistent outcomes. For regionally based veterans, delivering treatment in their local environment does not detract from, and may even enhance, outcomes. These findings have implications for the planning and purchasing of mental health services for sufferers of PTSD, particularly for veterans of more recent combat or peacekeeping deployments.


2017 ◽  
Vol 12 (10) ◽  
pp. 1370-1377 ◽  
Author(s):  
Yusuf Köklü ◽  
Utku Alemdaroğlu ◽  
Hamit Cihan ◽  
Del P. Wong

Purpose: To investigate the effects of different bout durations on internal and external loads of young soccer players during different small-sided games (SSGs). Methods: Fifteen young male soccer players (average age 17 ± 1 y) participated in 2 vs 2, 3 vs 3, and 4 vs 4 SSGs. All games lasted 12 min playing time in total, but each SSG format further consisted of 4 bout durations: continuous (CON: 1 bout × 12 min) or interval with short (SBD: 6 bouts  × 2 min), medium (MBD: 3 bouts × 4 min), or long (LBD: 2 bouts × 6 min) bout durations. During the SSGs, heart-rate (HR) responses and distance covered in different speed zones (walking and low-intensity, moderate-intensity, and high-intensity running) were measured. Rating of perceived exertion (RPE) and blood lactate (La−) were determined at the end of each SSG. Results: The SBD format elicited significantly lower %HRmax responses compared to LBD and CON in all formats (P < .05). The SBD format also showed significantly shorter distances covered in walking and greater distances covered in moderate-intensity running, as well as significantly greater total distance covered compared to LBD and CON in all formats (P < .05). In addition, LBD produced significantly lower La− and RPE responses than SBD and CON in all formats (P < .05). Conclusions: These results suggest that coaches and sport scientists who want to achieve higher internal loads could use SBD and CON timing protocols, while those who want to achieve higher external loads might prefer to use SBD and MBD when planning all SSG formats.


2018 ◽  
Vol 13 (7) ◽  
pp. 940-946 ◽  
Author(s):  
Farhan Juhari ◽  
Dean Ritchie ◽  
Fergus O’Connor ◽  
Nathan Pitchford ◽  
Matthew Weston ◽  
...  

Context: Team-sport training requires the daily manipulation of intensity, duration, and frequency, with preseason training focusing on meeting the demands of in-season competition and training on maintaining fitness. Purpose: To provide information about daily training in Australian football (AF), this study aimed to quantify session intensity, duration, and intensity distribution across different stages of an entire season. Methods: Intensity (session ratings of perceived exertion; CR-10 scale) and duration were collected from 45 professional male AF players for every training session and game. Each session’s rating of perceived exertion was categorized into a corresponding intensity zone, low (<4.0 arbitrary units), moderate (≥4.0 and <7.0), and high (≥7.0), to categorize session intensity. Linear mixed models were constructed to estimate session duration, intensity, and distribution between the 3 preseason and 4 in-season periods. Effects were assessed using linear mixed models and magnitude-based inferences. Results: The distribution of the mean session intensity across the season was 29% low intensity, 57% moderate intensity, and 14% high intensity. While 96% of games were high intensity, 44% and 49% of skills training sessions were low intensity and moderate intensity, respectively. Running had the highest proportion of high-intensity training sessions (27%). Preseason displayed higher training-session intensity (effect size [ES] = 0.29–0.91) and duration (ES = 0.33–1.44), while in-season game intensity (ES = 0.31–0.51) and duration (ES = 0.51–0.82) were higher. Conclusions: By using a cost-effective monitoring tool, this study provides information about the intensity, duration, and intensity distribution of all training types across different phases of a season, thus allowing a greater understanding of the training and competition demands of Australian footballers.


2014 ◽  
Vol 9 (2) ◽  
pp. 265-272 ◽  
Author(s):  
Iker Muñoz ◽  
Stephen Seiler ◽  
Javier Bautista ◽  
Javier España ◽  
Eneko Larumbe ◽  
...  

Purpose:To quantify the impact of training-intensity distribution on 10K performance in recreational athletes.Methods:30 endurance runners were randomly assigned to a training program emphasizing low-intensity, sub-ventilatory-threshold (VT), polarized endurance-training distribution (PET) or a moderately high-intensity (between-thresholds) endurance-training program (BThET). Before the study, the subjects performed a maximal exercise test to determine VT and respiratory-compensation threshold (RCT), which allowed training to be controlled based on heart rate during each training session over the 10-wk intervention period. Subjects performed a 10-km race on the same course before and after the intervention period. Training was quantified based on the cumulative time spent in 3 intensity zones: zone 1 (low intensity, <VT), zone 2 (moderate intensity, between VT and RCT), and zone 3 (high intensity, >RCT). The contribution of total training time in each zone was controlled to have more low-intensity training in PET (±77/3/20), whereas for BThET the distribution was higher in zone 2 and lower in zone 1 (±46/35/19).Results:Both groups significantly improved their 10K time (39min18s ± 4min54s vs 37min19s ± 4min42s, P < .0001 for PET; 39min24s ± 3min54s vs 38min0s ± 4min24s, P < .001 for BThET). Improvements were 5.0% vs 3.6%, ~41 s difference at post-training-intervention. This difference was not significant. However, a subset analysis comparing the 12 runners who actually performed the most PET (n = 6) and BThET (n = 16) distributions showed greater improvement in PET by 1.29 standardized Cohen effect-size units (90% CI 0.31–2.27, P = .038).Conclusions:Polarized training can stimulate greater training effects than between-thresholds training in recreational runners.


2015 ◽  
Vol 21 (1) ◽  
pp. 54-60 ◽  
Author(s):  
Luciano Antonacci Condessa ◽  
Christian Emmanuel Torres Cabido ◽  
André Maia Lima ◽  
Daniel Barbosa Coelho ◽  
Vinicius M. Rodrigues ◽  
...  

This study compared the exercise intensity of four specific soccer training sessions (friendly and training match, tactical and technical workouts). Ten professional soccer players (24.2 ± 3.7 years, 177.9 ± 7.3 cm, 63.2 ± 4.6 mLO2•kg-1•min-l) were recruited. A treadmill progressive interval test was performed to determine the players' VO2max, maximal heart rate (HRmax), HR-VO2 curve, and the heart rate corresponding to blood lactate concentrations of 2 and 4 mmol/L. The heart rate during the training sessions was used to estimate the exercise intensity and to classify them into intensity zones (low-intensity: <2 mmol/L; moderate-intensity: between 2 and 4 mmol/L; high-intensity: >4 mmol/L). Exercise intensities were different among training sessions (friendly match: 86.0 ± 5.1% HRmax; training match: 81.2 ± 4.1% HRmax; tactical workout: 70.4 ± 5.3% HRmax; technical workout: 62.1 ± 3.6% HRmax). The friendly match presented the highest percentage of time performed in the high-intensity zone.


Author(s):  
Saeid Emamdoost ◽  
Asieh Abbassi Daloii ◽  
Alireza Barari ◽  
Ayoub Saeidi

Obesity and associated chronic inflammation lead to insulin resistance. The aim of this study was to evaluate the effect of varying intensity circuit resistance training on metabolic and inflammatory markers in obese men. In a semi-experimental trial, 44 obese men were selected and randomly divided into four groups, including 1) Control (n=11), 2) Low-intensity circuit resistance training (n=11), 3) Moderate-intensity circuit resistance training (n=11), and 4) High-intensity circuit resistance training (n=11). Resistance training was performed at different intensities, including 1) High-intensity circuit resistance training (80% 1RM), 2) Moderate-intensity circuit resistance (60% 1RM), and 3) Low-intensity circuit resistance training (40% 1RM), three sessions per week for 12 weeks. Serum levels of Dectin-1, TLR2, TLR4, MyD88 were measured using an ELISA kit. Data were analyzed with covariance analysis at P<0.05. Twelve weeks of moderate and high-intensity circuit resistance training significantly reduced weight, body mass index, serum levels of Dectin-1, TLR2, TLR4, MyD88, and HOMA-IR (P=0.001). The reduction of weight, body mass index, serum levels of Dectin-1, TLR2, TLR4, MyD88, and HOMA-IR were significant in obese men in the high-intensity training group compared to low-intensity training (P=0.001). It seems that circuit resistance training, especially high-intensity circuit resistance training, can be used as an option to reduce the inflammatory and metabolic complications associated with obesity.  


2016 ◽  
Vol 28 (2) ◽  
pp. 39-42 ◽  
Author(s):  
L Pote

Background: There is a limited amount of literature on thephysiological cost of batting. Of the studies that have beencompleted, most have used protocols that are of short durationand high intensity, and it has been questioned whether thisrepresents actual game play. Furthermore, it is difficult to studysports such as cricket due to the intermittent nature of the game.Objective: To determine the physiological responses of batsmenduring a simulated One Day International century.Methods: Seventeen male batsmen from the Rhodes UniversityCricket Club performed a simulated batting work bout knownas the BATEX© protocol. The protocol consisted of six, five oversstages, each lasting 21 minutes. Three of the stages (stages one,three and five) were low-intensity stages and the other three(stages two, four and six) were high-intensity stages. During thework bout selected physiological responses were recorded..Results: Heart rate (124±15-159±14 beats.min-1), oxygen uptake(29.3±6.1-43.4±6.3 ml.kg-1.min-1), energy expenditure (48.1±9.2-109.2±10.5 kJ.min-1) and core temperature (37.7±0.3-38.7±0.4 oC)responses all increased significantly (p<0.05) between stageone and stage six. The respiratory exchange ratio decreasedsignificantly (p<0.05) between stages one and six (0.90±0.19-0.89±0.37).Conclusions: Batting is more physically demanding thanoriginally thought, and as a result training programmes shouldconcentrate on simulating real match play situations to improveperformance and reduce the risk of injury.


2001 ◽  
Vol 75 (1) ◽  
pp. 33-41 ◽  
Author(s):  
D.M. Cox ◽  
C.V. Holland

Outbred LACA mice were administered low (100 ova), medium (1000 ova), high (3000 ova) and trickle (4×250 ova) doses ofToxocara canisova and the effect of infection was examined with respect to the number of larvae recovered from the brain and their behaviour. Recovery of larvae from the brain was generally low with the % recovery expressed in terms of the total dose administered being highest for the 3000 dose (6.1%) and 1000 dose (6%), followed by the 100 (4.4%) and trickle (3.5%) doses. The variation in larval recoveries was large between individual mice receiving similar doses. The level of infection in the brain was lower in mice receiving a multiple as opposed to an equivalent single dose of ova. Mice were then divided into three larval intensity groupings based upon the number of larvae recovered from their brain. The ranges for the groups were as follows: low intensity group, 0–15 larvae; moderate intensity group, 27–55 larvae; high intensity group, 66–557 larvae. Three behavioural tests were carried out on control and infected mice. Exploration and response to novelty was examined using a ‘T’ maze and learning was investigated by means of a water-finding task. Anxiety was measured using an elevated plus maze apparatus. Infected mice were less explorative and less responsive to novelty in the ‘T’ maze and this was particularly pronounced for the heavily infected mice. In the elevated plus maze, infected mice displayed reduced levels of anxiety to aversive and exposed areas of the maze, particularly in the case of the moderate and high intensity mice. There was evidence for impaired learning ability in the water task apparatus for moderate and high intensity mice. In general, the effects of infection on behaviour were more pronounced in the moderate and high intensity groups compared to the low intensity group.


2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
E Bruckert ◽  
G Desamericq ◽  
A Khachatryan ◽  
P Ngo ◽  
G Gusto ◽  
...  

Abstract Background introduction Many patients, especially those at very high cardiovascular (CV) risk, do not reach low-density lipoprotein cholesterol (LDL-C) targets for at least 2 reasons: they may not receive a sufficiently intensive regimen, and/or they may not adhere to their medication. Purpose Describe demographic, clinical characteristics and treatment intensity and adherence in patients on lipid lowering therapies (LLT) following an Acute Coronary Syndrome (ACS) in France. Methods Retrospective cohort study on the PGRx (the Pharmacoepidemiologic General Research eXtension program)-ACS dataset in France, with data collected retrospective and prospectively via physicians, prescription records and patient interviews. Patients were accrued prospectively and/or retrospectively by centres from the PGRx Cardiology and General Practitioners networks. We included adult patients (≥18 years) suffering an ACS between 2013 and 2016 who received LLT at or within 92 days of their ACS hospital discharge. Follow-up was censored at time of new CV event, death, lost to follow-up or interview date (mean duration 12.4 months). Outcomes of interest included LLT intensity (high, moderate and low intensity statins with or without ezetimibe) and adherence measured as proportion of days covered (PDC). Results 2695 eligible patients were included (77% men); mean age (SD) 63.1 (12.8), 18% had diabetes mellitus, mean (SD) LDL-C 112.1 (46.4) mg/dl. Treatment with LLT at discharge is summarised in table below. Age and baseline LDL-C were drivers of treatment intensity with higher proportion of patients on high intensity statins in younger patients and in those with higher baseline LDL-C. Overall 70% of patients were adherent (PDC≥80%). Patients on moderate intensity were more adherent (76%) than those on low (63%) or high intensity statins (67%). Treatment patterns with LLT after an ACS LLT following ACS N (%) PDC at 1 year, Mean (SD) Adherent, N (%) Not Adherent, N (%) Ezetimibe 34 (1.3%) 82.8% (31.3%) 26 (76.5%) 8 (23.5%) Low intensity statins 64 (2.4%) 74.8% (33.8%) 40 (62.5%) 24 (37.5%) Moderate intensity statins 993 (37.1%) 82.0% (30.9%) 751 (75.6%) 242 (24.4%) High intensity statins 1515 (56.6%) 74.6% (36.2%) 1007 (66.5%) 508 (33.5%) Statin + ezetimibe 59 (2.2%) 75.9% (34.7%) 40 (67.8%) 19 (32.2%) Overall 2695 (100%) 77.6% (34.3%) 1871 (69.9%) 807 (30.1%) Conclusion(s) Our data show a substantial proportion of patients in France are not treated with high intensity statins after an ACS despite guidelines recommendation. Adherence to LLT is acceptable in patients after an ACS although it appears to worsen when high intense statins are used Acknowledgement/Funding Study has been funded by Amgen GmbH


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