Speed Improves With Eccentric Hamstring Training in Athletes of Different Maturity Status

2021 ◽  
pp. 1-9
Author(s):  
Raouf Hammami ◽  
Javier Gene-Morales ◽  
Ammar Nebigh ◽  
Haithem Rebai ◽  
Juan C. Colado
Keyword(s):  
Factor Analysis ◽  
Mixed Model ◽  
Intervention Group ◽  
Team Sport ◽  
Sprint Performance ◽  
Height Velocity ◽  
Control Groups ◽  
Change Of Direction ◽  
Almost All ◽  
Shuttle Run

Purpose: To investigate the effects of an eccentric hamstring strength training program (EHT) on sprint performance (10-, 20-, and 30-m sprint times) and change of direction speed (4 × 5-m shuttle run and T-Half test) in male European handball athletes at 2 maturity statuses (prepeak and postpeak height velocity [PHV]). Methods: Forty-five participants (12.68 [1.58] y) were divided into pre-PHV and post-PHV and randomly allocated to a control or intervention group, which performed a guided 2 day per week 6-week EHT of 5 exercises. A mixed-model (within- and between-factor) analysis of variance was conducted. Results: A significant effect (P < .05) of the interaction time × maturity × training was observed in the T-Half, 10, and 30 m tests. Both intervention groups significantly improved in all the tests, except in the 20 m sprint and the post-PHV in the 10 m sprint. Improvements ranged between 0.93% and 5.74% (effect size: 0.07–0.79). Both control groups yielded no improvements in almost all the tests. The improvements of both groups undergoing the intervention (pre-PHV and post-PHV) were not significantly different (only a tendency in the 10 m sprint). Conclusion: An EHT program combined with European-handball training improve change of direction and sprint performance in pre-PHV and post-PHV male players. Professionals training European handball and similar team-sport athletes should consider including EHT regardless of athlete’s maturity.

Effects of Weighted Vest Loading During Daily Living Activities on Countermovement Jump and Sprint Performance

2020 ◽  
Vol 15 (3) ◽  
pp. 309-318
Author(s):  
Jeffrey D. Simpson ◽  
Ludmila Cosio-Lima ◽  
Eric M. Scudamore ◽  
Eric K. O’Neal ◽  
Ethan M. Stewart ◽  
...  
Keyword(s):  
Daily Living ◽  
Average Rate ◽  
Reaction Force ◽  
Intervention Group ◽  
Sprint Performance ◽  
Control Group ◽  
Countermovement Jump ◽  
Change Of Direction ◽  
And Training ◽  
Weighted Vest

Purpose: Wearing a weighted vest (WV) during daily living and training can enhance jump and sprint performance; however, studies examining the efficacy of this method in female populations is limited. This study examined the effect of wearing a WV during daily living and training on countermovement jump (CMJ), change-of-direction, and sprint performance. Methods: Trained females were separated into intervention (n = 9) and control (n = 10) groups. The intervention group wore WVs of ∼8% body mass 4 days per week for 8 hours per day (32 h/wk total), and 3 training sessions per week for the first 3 weeks. Subsequently, 3 weeks of regular training without WV stimulus was completed. The control group received no intervention and continued normal training for 6 weeks. Average and best performance was assessed on the single CMJ, four continuous CMJ, t-test change-of-direction drill, and a 25-m sprint at baseline, week 3, and week 6. Results: No significant interactions or group effects were found. However, significant time main effects revealed increases in average rate of force development during the CMJ from baseline to week 3 (P = .048) and week 6 (P = .013), whereas peak vertical ground reaction force increased during the four continuous CMJ from baseline to week 3 (P = .048) and week 6 (P = .025) for both groups. Conclusions: The lower relative WV load used in this study failed to elicit significant improvements in jump and sprint performance in comparison with routine training, or that which have been found in past investigations with elite male athletes completing high-intensity performance tasks with greater WV loads.

scholarly journals Validez y fiabilidad de dispositivos GPS de 5 Hz en carreras cortas con cambio de sentido (Validity and reliability of 5 Hz GPS devices on short career with change of direction)

Retos ◽  
2015 ◽  
pp. 30-33
Author(s):  
David Casamichana Gómez ◽  
Julen Castellano Paulis
Keyword(s):  
Standard Error ◽  
Team Sports ◽  
Reliability And Validity ◽  
Movement Analysis ◽  
Team Sport ◽  
Validity And Reliability ◽  
Change Of Direction ◽  
Speed Test ◽  
Gps Devices ◽  
Almost All

El objetivo de este estudio fue estimar la validez y fiabilidad de los dispositivos GPS MinimaxX (Team Sport 2.5, Catapult Innovations) que opera con una frecuencia de muestreo de 5 Hz, registrando las distancias recorridas en carreras de ida y vuelta de 20 metros con cambios de dirección de 180º en diferentes rangos de velocidades. Se midieron las distancias realizadas por 10 jugadores de fútbol (edad, 22.5 ±2.9 años; altura, 174 ±7 cm.; peso, 72.6 ±3.4 kg.) en la prueba específica del test Yo -Yo de Resistencia nivel 1. El test acabó cuando los jugadores completaron los 10 primeros niveles (desde 2.22 hasta 3.48 m·s-1). Cuatro de los 10 participantes llevaron simultáneamente dos dispositivos GPS, lo que permitió valorar su fiabilidad. Para valorar la validez se compararon las distancias registradas por los GPS respecto a la distancia teórica del test medida previamente con cinta métrica. Se estimaron el coeficiente de variación (1 – 17 %), el error típico (2.3 – 136 m), el error estándar de medida (5 – 11 %) y la diferencias de medias (-0.7 – 89.2 m). Los resultados indican una moderada validez y fiabilidad a las intensidades estudiadas, casi para todos los niveles y también para la distancia total, aunque se sobreestimó la distancia recorrida. Palabra clave: tecnología GPS, análisis del movimiento, validez, fiabilidad, deportes de equipo, Yo-Yo test.Abstract: The aim of this study was to assess the validity and reliability of a MinimaxX GPS device (Team Sport 2.5, Catapult Innovations) operating with a sampling frequency of 5 Hz. Were measured distances made for 10 football players (age, 22.5 ±2.9 years, height 174 ±7 cm. and weight 72.6 ±3.4 kg) in the specific Yo-Yo Endurance Test level 1. The test ended when the players completed the first 10 levels of speed test (from 2.22 to 3.48 m·s-1). Four of the 10 participants took two simultaneously GPS, what allowed to value the reliability of the devices. In the validity study comparing the values obtained by the GPS with the actual values obtained by tape before performing the test. Statistical analysis were: coefficient of variation (1 – 17 %), standard error (2.3 – 136 m), standard error estimated, (5 – 11 %) and means difference (-0.7 – 89.2 m). The results indicate that although the reliability and validity showed satisfactory results at moderate intensities, almost all levels and for the total distance, although the distance was overestimated.Key words: GPS technology, movement analysis, validity, reliability, team sports, Yo-Yo test.

Hierarchical Modelling of Facial Perceptions: A Secondary Analysis of Aggressiveness Ratings

2020 ◽  
Author(s):  
Mark Christopher Adkins ◽  
Nataly Beribisky ◽  
Stephan Bonfield ◽  
Linda Farmus
Keyword(s):  
Factor Analysis ◽  
Mixed Model ◽  
Structural Information ◽  
Secondary Analysis ◽  
Specific Factor ◽  
Primary Analysis ◽  
Model Framework ◽  
Psychological Science ◽  
Individual Traits ◽  
Confirmatory Factor

The Psychological Science Accelerator’s (PSA) primary project tested for latent structure using exploratory factor analysis and confirmatory factor analysis but we decided to diverge from this approach and model individual traits separately. Our interest mainly was in examining the interplay between “stimulus ethnicity” and “stimulus sex” to discover how differing levels of these criterion differ across region, country, lab etc. While the necessary and prerequisite hierarchical structural information about each trait could certainly be found within the primary project’s dataset, we did not assume that any specific factor structure from the PSA’s primary analysis would necessarily hold, therefore we based our decision to model the data from each trait separately using a mixed model framework.

Investigating the Impact of Cognitive Training for Individuals With Bothersome Tinnitus: A Randomized Controlled Trial

2021 ◽  
pp. 019459982199474
Author(s):  
Maggie Xing ◽  
Dorina Kallogjeri ◽  
Jay F. Piccirillo
Keyword(s):  
Randomized Controlled Trial ◽  
Cognitive Training ◽  
Mixed Model ◽  
Controlled Trial ◽  
Intervention Group ◽  
Control Group ◽  
Functional Index ◽  
Open Label ◽  
Randomized Controlled ◽  
The Impact

Objective To evaluate the effectiveness of cognitive training in improving tinnitus bother and to identify predictors of patient response. Study Design Prospective open-label randomized controlled trial. Setting Online. Methods Participants were adults with subjective idiopathic nonpulsatile tinnitus causing significant tinnitus-related distress. The intervention group trained by using auditory-intensive exercises for 20 minutes per day, 5 days per week, for 8 weeks. The active control group trained on the same schedule with non–auditory intensive games. Surveys were completed at baseline, 8 weeks, and 12 weeks. Results A total of 64 participants completed the study. The median age was 63 years (range, 25-69) in the intervention group and 61 years (34-68) in the control group. Mixed model analysis revealed that within-subject change in Tinnitus Functional Index in the intervention group was not different than the control group, with marginal mean differences (95% CI): 0.24 (–11.20 to 10.7) and 2.17 (–8.50 to 12.83) at 8 weeks and 2.33 (–8.6 to 13.3) and 3.36 (–7.91 to 14.6) at 12 weeks, respectively. When the 2 study groups were compared, the control group had higher Tinnitus Functional Index scores than the intervention group by 10.5 points at baseline (95% CI, –0.92 to 29.89), 8.1 at 8 weeks (95% CI, –3.27 to 19.42), and 9.4 at 12 weeks (95% CI, –2.45 to 21.34). Conclusion Auditory-intensive cognitive training was not associated with changes in self-reported tinnitus bother. Given the potential for neuroplasticity to affect tinnitus, we believe that future studies on cognitive training for tinnitus remain relevant.

457 The Impact of PAP Therapy on Hematocrit in OSA and Polycythemia: A Pilot Study

SLEEP ◽  
2021 ◽  
Vol 44 (Supplement_2) ◽  
pp. A180-A181
Author(s):  
Mustafa Jafri ◽  
Gabrielle Rosa-Acosta ◽  
Jose Flores Martinez ◽  
Elizabeth Schofield ◽  
Cy Wilkins ◽  
...  
Keyword(s):  
Intervention Group ◽  
Smoking History ◽  
Event Analysis ◽  
Control Groups ◽  
Testosterone Therapy ◽  
Obstructive Sleep ◽  
Significant Difference ◽  
Testosterone Administration ◽  
And Control ◽  
The Impact

Abstract Introduction Untreated polycythemia leads to complications including thrombosis. Obstructive sleep apnea (OSA) is commonly associated with secondary erythrocytosis, which testosterone therapy can perpetuate. Effects of positive airway pressure (PAP) on elevated hematocrit (HCT) is unknown. We hypothesize PAP adherence can reduce HCT in men with OSA and polycythemia. Methods Retrospective chart review of male outpatients with newly diagnosed OSA and HCT≥45% at or 3 months before polysomnography (PSG) was conducted. Intervention group consisted of patients initiating PAP for OSA. HCT within 6 months of PAP initiation and PSG were recorded for intervention and control groups, respectively. Primary endpoint was time-to-HCT reduction of HCT&lt;50% plus 3% decrease. Cox proportional-hazards analysis was used to assess time-to-HCT response. Demographics, smoking history, testosterone administration, STOP-Bang score, AHI, and PAP compliance data were obtained. Patients excluded if PAP not indicated, or if PSG, PAP compliance, or repeat HCT were unavailable. Results 41 men with OSA had HCT≥45%, of which 16 had HCT≥50%. Median age was 60 years and median BMI was 32 kg/m2. 28 started PAP. 21 met definition for PAP compliance within 6 months. Median AHI of intervention and control groups were 23 and 19 events/hr, respectively. Mean baseline HCT of both groups were 49 and 50, respectively. No significant difference in age, BMI, smoking history, testosterone therapy, and baseline HCT between both groups noted. 39% of intervention group exhibited HCT response at 1 or more longitudinal assessments, versus 38% of control. Intervention group had higher mean STOP-Bang than control (mean 5.9 vs. 4.6, p=0.01) and trended towards higher mean baseline AHI (27.4 vs. 19.0, p= 0.06). Time-to-event analysis controlling for STOP-Bang and AHI demonstrated PAP was not associated with time-to-HCT response (HR = 1.3, 95% CI = 0.4–4.4). In moderate-severe OSA patients, 40% of intervention group had HCT response compared to 14% of control, though difference was not significant (HR = 2.5, 95% CI = 0.3–20.0). Conclusion Moderate-severe OSA patients trended towards reduction in HCT with PAP, although not statistically significant. Testosterone administration did not affect HCT response to PAP in this cohort. Larger studies are required to determine HCT response to PAP in these patients. Support (if any):

scholarly journals College Classroom Instructors Can Effectively Promote Standing among Students Provided with Standing Desks

2021 ◽  
Vol 18 (9) ◽  
pp. 4464
Author(s):  
Matthew S. Chrisman ◽  
Robert Wright ◽  
William Purdy
Keyword(s):  
United States ◽  
Intervention Group ◽  
Control Group ◽  
Sedentary Behaviors ◽  
Control Groups ◽  
Student Preferences ◽  
Standing Time ◽  
Urban University ◽  
Facilitators And Barriers ◽  
And Control

Standing desks may reduce sedentary behaviors in college students. Students at one mid-size urban university in the Midwestern United States were randomized into intervention (n = 21) and control groups (n = 27) to assess standing time when given access to standing desks. The intervention group received visual and oral instructor prompts to stand, while the control received no prompts during a 50 min lecture. All students were provided with adjustable tabletop standing desks. ActivPAL accelerometers measured sitting and standing time. A brief survey assessed student preferences, including facilitators and barriers to standing. Mean standing time was greater in the intervention vs. control group (26 vs. 17 min, p = 0.023). Students tended to stand in the corners and edges of the room. Main facilitators for standing included to break up sitting, reduce back pain, and increase attention and focus; main barriers were not wanting to distract others or be the only one standing. In total, 87.5% of intervention group participants found five prompts to stand were adequate. Students increased standing time in class when provided with standing desks and instructor prompts to stand. Findings can inform the layout of classrooms and when and how to promote standing desks during lectures.

scholarly journals Scale development and an educational program to reduce the stigma of schizophrenia among community pharmacists: a randomized controlled trial

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Tomoo Fujii ◽  
Manako Hanya ◽  
Kenta Murotani ◽  
Hiroyuki Kamei
Keyword(s):  
Randomized Controlled Trial ◽  
Factor Analysis ◽  
Social Distance ◽  
Educational Program ◽  
Controlled Trial ◽  
Intervention Group ◽  
Community Pharmacists ◽  
Factor I ◽  
Randomized Controlled ◽  
Factor Ii

Abstract Background Stigma associated with mental disorders is rooted among many pharmacists, and represents a major barrier to patient support in community-based psychiatry. We developed an assessment scale that is specifically designed to assess the level of stigma that pharmacists may have toward schizophrenia, and then examined the effects of reducing stigma with an educational program that focuses on communication with patients diagnosed with schizophrenia (PDS) using the newly developed Stigma Scale towards Schizophrenia for Community Pharmacists (SSCP). Methods SSCP was developed by exploratory factor analysis with promax rotation based on responses from 822 randomly selected community pharmacists. Furthermore, a randomized controlled trial was conducted for 115 community pharmacists to clarify the effects of reducing the stigma of schizophrenia using an educational program for them with a focus on communication with PDS. Participants were individually allocated to two groups: educational lecture group (56; only attending a lecture on schizophrenia) or contact-based intervention group (59; communicating with PDS and attending the lecture). The stigma assessment using SSCP was conducted immediately before and after the educational intervention. Results A total of 4 factors and 27 items were extracted from the exploratory factor analysis to comprise the SSCP. Cronbach’s α of SSCP, social distance at professional pharmacy service (factor I), attitudes towards PDS (factor II), self-disclosure (factor III), and social distance in personal (factor IV) were 0.89, 0.88, 0.76, 0.62, and 0.62, respectively. Educational program-related changes of the median (interquartile range) total SSCP score from baseline were − 9.0 (− 16.0 – − 5.0) in the contact-based intervention group and − 3.0 (− 7.0–1.0) in the educational lecture group, reflecting a significant reduction of stigma levels in the contact-based intervention group. On examining the SSCP subscales, scores for factor I and factor II significantly improved. The educational program was more effective for pharmacists aged 20–39 years or with negligible experience of communicating with PDS at work and/or in private life. Conclusions SSCP and the educational program for community pharmacists that focuses on communication with PDS were useful for assessing and reducing, respectively, the stigma attached by these pharmacists to schizophrenia. Trial registration UMIN Clinical Trials Registry (UMIN000043189, registered on January 30, 2021), Retrospectively registered.

scholarly journals Improving nurses’ readiness for evidence-based practice in critical care units: results of an information literacy training program

BMC Nursing ◽  
2021 ◽  
Vol 20 (1) ◽  
Author(s):  
Jamileh Farokhzadian ◽  
Somayeh Jouparinejad ◽  
Farhad Fatehi ◽  
Fatemeh Falahati-Marvast
Keyword(s):  
Critical Care ◽  
Training Program ◽  
Information Literacy ◽  
Intervention Group ◽  
Literacy Skills ◽  
Evidence Based ◽  
Control Groups ◽  
Critical Care Units ◽  
Literacy Training ◽  
Information Literacy Skills

Abstract Background One of the most important prerequisites for nurses’ readiness to implement Evidence-Based Practice (EBP) is to improve their information literacy skills. This study aimed to evaluate the impact of a training program on nurses’ information literacy skills for EBP in critical care units. Methods In this interventional study, 60 nurses working in critical care units of hospitals affiliated to Kerman University of Medical Sciences were randomly assigned into the intervention or control groups. The intervention group was provided with information literacy training in three eight-hour sessions over 3 weeks. Data were collected using demographic and information literacy skills for EBP questionnaires before and 1 month after the intervention. Results At baseline, the intervention and control groups were similar in terms of demographic characteristics and information literacy skills for EBP. The training program significantly improved all dimensions of information literacy skills of the nurses in the intervention group, including the use of different information resources (3.43 ± 0.48, p < 0.001), information searching skills and the use of different search features (3.85 ± 0.67, p < 0.001), knowledge about search operators (3.74 ± 0.14, p < 0.001), and selection of more appropriate search statement (x2 = 50.63, p = 0.001) compared with the control group. Conclusions Nurses can learn EBP skills and apply research findings in their nursing practice in order to provide high-quality, safe nursing care in clinical settings. Practical workshops and regular training courses are effective interventional strategies to equip nurses with information literacy skills so that they can apply these skills to their future nursing practice.

scholarly journals Alleviating psychological distress associated with a positive cervical cancer screening result: a randomized control trial

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Yukari Isaka ◽  
Ai Hori ◽  
Rie Tanaka ◽  
Masao Ichikawa
Keyword(s):  
Cervical Cancer ◽  
Psychological Distress ◽  
Cancer Screening ◽  
Cervical Cancer Screening ◽  
Controlled Trial ◽  
Intervention Group ◽  
Control Group ◽  
Control Groups ◽  
And Control ◽  
Screening Result

Abstract Background The method of communicating a positive cancer screening result should seek to alleviate psychological distress associated with a positive result. We evaluated whether the provision of information through a leaflet would help reduce psychological distress in a randomized controlled trial. Methods The participants were women aged 20–69 years who were about to undergo cervical cancer screening at health centers. Before the screening, they received hypothetical screening results, with a leaflet (intervention group, n = 493) or without it (control group, n = 479), randomly. Their psychological distress and intention to undergo further examination were then compared between the intervention and control groups. Results After the intervention (providing a leaflet with hypothetical screening results), psychological distress appeared to be higher in the control group than in the intervention group among those who received a hypothetical positive screening result (odds ratio: 2.57, 95% confidence interval: 1.87–3.54), while 95% and 97% of those in the intervention and control groups, respectively, reported that they would undergo further examination. Conclusions Information provision might help reduce psychological distress but not hinder further examination among women who screen positive for cervical cancer. Trial registration: UMIN Clinical Trials Registry UMIN000029894. Date of Registration: November 2017.

scholarly journals Effect of Telephone Exercise Counseling on Frailty in Older Veterans: Project LIFE

2007 ◽  
Vol 1 (4) ◽  
pp. 326-334 ◽  
Author(s):  
Matthew J. Peterson ◽  
Richard Sloane ◽  
Harvey Jay Cohen ◽  
Gail M. Crowley ◽  
Carl F. Pieper ◽  
...  
Keyword(s):  
Physical Activity ◽  
Functional Limitations ◽  
Intervention Group ◽  
Gait Velocity ◽  
Activity Levels ◽  
Control Groups ◽  
Elderly Male ◽  
Frailty Status ◽  
Exercise Counseling ◽  
Male Veterans

This study sought to determine if telephone exercise counseling attenuates frailty in older, male veterans through increased levels of physical activity. Eighty-one elderly, male veterans (age = 78.4 ± 4.9 years) randomized to intervention ( n = 39) or combined control groups ( n = 42) completed baseline and 6-month follow-up measures of gait velocity, 6-min walk, chair stands, body mass index, and physical activity. Adapting the Fried frailty model, deficits in one or more of these outcomes indicated frailty. The intervention group had a 6-month decrease of 18% in the proportion of frail to not frail participants, whereas the control groups had no change in proportions (Fisher's p = .08). Frail participants had a mean 6-month decrease in physical activity levels of 124 kilocalories/week, whereas the not frail group increased by 619 kilocalories/week ( p = .07). There was a clinically meaningful change in frailty status with intensive, telephone exercise counseling. Improvement in frailty status was likely due to improvement in functional limitations.

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