Cardiorespiratory Responses During Underwater and Land Treadmill Exercise in College Athletes

2011 ◽  
Vol 20 (3) ◽  
pp. 345-354 ◽  
Author(s):  
Peter Brubaker ◽  
Cemal Ozemek ◽  
Alimer Gonzalez ◽  
Stephen Wiley ◽  
Gregory Collins
Keyword(s):  
Athletic Training ◽  
Outcome Measures ◽  
Sports Medicine ◽  
Perceived Exertion ◽  
College Athletes ◽  
Random Order ◽  
Original Research ◽  
Cardiorespiratory Responses ◽  
Significant Difference ◽  
The Relationship

Context:Underwater treadmill (UTM) exercise is being used with increased frequency for rehabilitation of injured athletes, yet there has been little research conducted on this modality.Objective:To determine the cardiorespiratory responses of UTM vs land treadmill (LTM) exercise, particularly with respect to the relationship between heart rate (HR) and oxygen consumption (VO2).Design and Setting:This quantitative original research took place in sports medicine and athletic training facilities at Wake Forest University.Participants:11 Wake Forest University student athletes (20.8 ± 0.6 y, 6 women and 5 men).Intervention:All participants completed the UTM and LTM exercise-testing protocols in random order. After 5 min of standing rest, both UTM and LTM protocols had 4 stages of increasing belt speed (2.3, 4.9, 7.3, and 9.6 km/h) followed by 3 exercise stages at 9.6 km/h with increasing water-jet resistance (30%, 40%, and 50% of jet capacity) or inclines (1%, 2%, and 4% grade).Main Outcome Measures:A Cosmed K4b2 device with Polar monitor was used to collect HR, ventilation (Ve), tidal volume (TV), breathing frequency (Bf), and VO2 every minute. Ratings of perceived exertion (RPE) were also obtained each minute.Results:There was no significant difference between UTM and LTM for VO2 at rest or during any stage of exercise except stage 3. Furthermore, there were no significant differences between UTM and LTM for HR, Ve, Bf, and RPE on any exercise stage. Linear regression of HR vs VO2, across all stages of exercise, indicates a similar relationship in these variables during UTM (r = .94, y = .269x − 10.86) and LTM (r = .95, y = .291x − 12.98).Conclusions:These data indicate that UTM and LTM exercise elicits similar cardiorespiratory responses and that HR can be used to guide appropriate exercise intensity for college athletes during UTM.

scholarly journals A-44 ImPACT of Amnesia Related Concussions Across Developmental Stages

2020 ◽  
Vol 35 (5) ◽  
pp. 640-640
Author(s):  
K Unjia ◽  
R Bennett ◽  
L Lashley
Keyword(s):  
Retrograde Amnesia ◽  
Sports Medicine ◽  
Developmental Stages ◽  
Future Research ◽  
Age Group ◽  
Adolescent Athletes ◽  
Significant Difference ◽  
The Impact ◽  
The Relationship ◽  
One Way Anova

Abstract Objective This study aimed to examine the relationship between developmental stages and concussions that resulted in amnesia as measured by ImPACT. Method Participants were selected from an archival de-identified sports medicine ImPACT database. The sample (N = 4,200) was primarily male (62.2%) student athletes with ages ranging from 10 to 25 years. Participants were divided into three groups: Young athletes (n = 1,400), Adolescent (n = 1,400), and Adult (n = 1,400). A One-Way ANOVA was conducted to determine the relationship between age group and prevalence of concussions resulting in anterograde or retrograde amnesia. Results The One-Way ANOVA revealed significant differences between age group and anterograde F(2,4197) = 107.449, p < .001 and retrograde amnesia F(2,4197) = 82.949, p < .001. Bonferroni pairwise comparison revealed the adolescent athlete group experienced more concussions that result in both anterograde and retrograde amnesia compared to young and adult athletes. There was no significant difference between young and adult athletes. Additionally, there is a significant difference regarding total games missed following concussion F(2,4197) = 117.723, p < .001, with adolescent athletes missing more games compared to young and adult athletes. Conclusions The findings of this study suggest adolescent athletes tend to experience more amnesia-related concussions compared to young and adult athletes. Additionally, adolescent athletes miss more games following these types of concussions. This study highlights the impact that certain types of concussions have on athletes across the developmental stages. Future research should analyze the cognitive effects of various types of concussions across the developmental stages.

scholarly journals Effects of Pre-Exercise High and Low Glycaemic Meal on Intermittent Sprint and Endurance Exercise Performance

Sports ◽  
2019 ◽  
Vol 7 (8) ◽  
pp. 188 ◽  
Author(s):  
Man Tong Chua ◽  
Govindasamy Balasekaran ◽  
Mohammed Ihsan ◽  
Abdul Rashid Aziz
Keyword(s):  
Endurance Exercise ◽  
Exercise Performance ◽  
Perceived Exertion ◽  
Endurance Performance ◽  
Random Order ◽  
Glycaemic Index ◽  
Performance Outcomes ◽  
Exercise Heart Rate ◽  
Significant Difference ◽  
Varsity Athletes

The purpose of this study is to investigate the effects of ingesting either a high glycaemic index (HGI) or low glycaemic index (LGI) carbohydrate meal (preceding a 12 h overnight fast and where the meal was ingested 45-min prior to activity) on intermittent sprint and endurance exercise performance. Ten male varsity athletes from intermittent sports (age 23.6 ± 1.7 years, VO2max 51.9 ± 4.7 mL·kg−1·min−1) underwent a peak velocity (Vpeak) test and familiarisation session, followed by two experimental sessions in random order. Experimental sessions involved the ingestion of either an HGI or LGI meal, followed by the completion of the modified Loughborough Intermittent Shuttle Test (mLIST). There was no significant difference between HGI or LGI meals on sprint times (p = 0.62) and distance to exhaustion (p = 0.54) in the mLIST. Exercise heart rate, blood lactate and ratings of perceived exertion were also similar between the two meal trials throughout the mLIST (all p > 0.05). Subjective ratings of hunger, fullness, satiety and satisfaction were also not significantly different between the two meals. In conclusion, consuming either an HGI or LGI meal after a prolonged 12 h fast and ingesting the meal 45 min prior to exercise did not differ in either physiological, subjective and intermittent sprint and endurance performance outcomes.

scholarly journals Preseason to Postseason Changes on the BTrackS Force Plate in a Sample of College Athletes

2020 ◽  
Vol 29 (1) ◽  
pp. 134-136
Author(s):  
Ryan Morrison ◽  
Kyle M. Petit ◽  
Chris Kuenze ◽  
Ryan N. Moran ◽  
Tracey Covassin
Keyword(s):  
Athletic Training ◽  
Path Length ◽  
College Athletes ◽  
Center Of Pressure ◽  
Low Cost ◽  
Force Plate ◽  
Minimal Detectable Change ◽  
Detectable Change ◽  
Competitive Season ◽  
Significant Difference

Context: Balance testing is a vital component in the evaluation and management of sport-related concussion. Few studies have examined the use of objective, low-cost, force-plate balance systems and changes in balance after a competitive season. Objective: To examine the extent of preseason versus postseason static balance changes using the Balance Tracking System (BTrackS) force plate in college athletes. Design: Pretest, posttest design. Setting: Athletic training facility. Participants: A total of 47 healthy, Division-I student-athletes (33 males and 14 females; age 18.4 [0.5] y, height 71.8 [10.8] cm, weight 85.6 [21.7] kg) participated in this study. Main Outcome Measures: Total center of pressure path length was measured preseason and postseason using the BTrackS force plate. A Wilcoxon signed-rank test was conducted to examine preseason and postseason changes. SEM and minimal detectable change were also calculated. Results: There was a significant difference in center of pressure path length differed between preseason (24.6 [6.8] cm) and postseason (22.7 [5.4] cm) intervals (P = .03), with an SEM of 3.8 cm and minimal detectable change of 10.5 cm. Conclusions: Significant improvements occurred for center of pressure path length after a competitive season, when assessed using the BTrackS in a sample of college athletes. Further research is warranted to determine the effectiveness of the BTrackS as a reliable, low-cost alternative to force-plate balance systems. In addition, clinicians may need to update baseline balance assessments more frequently to account for improvements.

scholarly journals Immediate Effect of Kinesio Taping on Muscle Response in Young Elite Soccer Players

2013 ◽  
Vol 22 (1) ◽  
pp. 53-58 ◽  
Author(s):  
Moisés de Hoyo ◽  
Alejandro Álvarez-Mesa ◽  
Borja Sañudo ◽  
Luis Carrasco ◽  
Sergio Domínguez
Keyword(s):  
Outcome Measures ◽  
Body Mass ◽  
Sports Medicine ◽  
Vastus Lateralis ◽  
Random Order ◽  
Muscle Performance ◽  
Soccer Players ◽  
Kinesio Taping ◽  
University Laboratory ◽  
Taping Technique

Context:Kinesio taping (KT) is a new taping technique increasingly used in sports medicine to improve muscle performance; however, its real effect is not entirely known.Objective:To assess the immediate effects of KT on muscle performance in young healthy elite soccer players.Design:Crossover study.Setting:University laboratory.Participants:Eighteen young elite soccer players voluntarily participated in the study (mean ± SEM: age 18.20 ± 2.45 y, height 1.76 ± 3.56 m, body mass 65.25 ± 3.76 kg, body-mass index 20.12 ± 1.25 kg/m2).Interventions:Each subject completed 2 different protocols, with and without KT. Interventions were performed in a random order, with a washout period between conditions of 1 wk.Main Outcome Measures:Outcome measures included tensiomyographic response in the vastus lateralis and vastus medialis, power output with 30 and 50 kg, countermovement jump, and 10-m sprint.Results:Data showed no significant differences for any of the outcomes analyzed between interventions.Conclusions:KT does not produce a short-term improvement in muscle performance in young elite soccer players.

The Effects of Different Forms of Caffeine Supplement on 5-km Running Performance

2020 ◽  
Vol 15 (3) ◽  
pp. 390-394
Author(s):  
Peter J. Whalley ◽  
Chey G. Dearing ◽  
Carl D. Paton
Keyword(s):  
Perceived Exertion ◽  
Strongly Correlated ◽  
Moderate Dose ◽  
Running Performance ◽  
Treatment Performance ◽  
Performance Time ◽  
Significant Difference ◽  
Alternate Forms ◽  
Performance Ability ◽  
The Relationship

Purpose: Caffeine is frequently used by athletes as an ergogenic aid. Various alternate forms of caffeine administration are available, which may produce different effects. This investigation compares the effects of different forms of caffeine supplementation on 5-km running performance, and the relationship between athlete ability and degree of enhancement attained. Methods: Fourteen amateur runners completed a series of self-paced outdoor time trials following unknown ingestion of a placebo (P) or one of 3 alternate forms of caffeine supplement. Trials were randomized in a crossover design with caffeine (approximately 3–4.5 mg·kg−1) administered 15 minutes before each trial via chewing gum (CG), dissolvable mouth strips (CS), or tablet (CT). Results: Compared with P, all caffeine supplements led to worthwhile enhancements in running performance with a mean (±95% confidence limit) overall effect across all supplements of 1.4% ± 0.9%. Individual caffeine treatment effects (CG = 0.9% ± 1.4%, CS = 1.2% ± 1.0%, and CT = 2.0% ± 1.1%) were not significantly different (P > .05) from each other; however, CT trials produced the largest gain and was significantly different (P = .02) compared with P. There was no significant difference in heart rate or rate of perceived exertion across the performance trials. The magnitude of caffeine enhancement was also strongly correlated (r = .87) with no-treatment performance time. Conclusions: The findings showed that irrespective of delivery form, moderate dose of caffeine supplementation produces worthwhile gains in 5-km running performance compared with a P. Furthermore, the magnitude of caffeine enhancement is highly individualized, but it appears related to athlete performance ability.

scholarly journals COVID-19 aerosol box as protection from droplet and aerosol contaminations in healthcare workers performing airway intubation: a randomised cross-over simulation study

2020 ◽  
pp. emermed-2020-210514 ◽  
Author(s):  
Muhaimin Noor Azhar ◽  
Aida Bustam ◽  
Khadijah Poh ◽  
Ahmad Zulkarnain Ahmad Zahedi ◽  
Mohd Zahir Amin Mohd Nazri ◽  
...  
Keyword(s):  
Healthcare Workers ◽  
Random Order ◽  
Transmission Risk ◽  
Intubation Time ◽  
Body Regions ◽  
Significant Difference ◽  
Intubation Success Rate ◽  
The Difference ◽  
Reduced Mobility ◽  
The Relationship

BackgroundConcerns over high transmission risk of SARS-CoV-2 have led to innovation and usage of an aerosol box to protect healthcare workers during airway intubation in patients with COVID-19. Its efficacy as a barrier protection in addition to the use of a standard personal protective equipment (PPE) is not fully known. We performed a simulated study to investigate the relationship between aerosol box usage during intubation and contaminations on healthcare workers pre-doffing and post-doffing of PPE.MethodsThis was a randomised cross-over study conducted between 9 April to 5 May 2020 in the ED of University Malaya Medical Centre. Postgraduate Emergency Medicine trainees performed video laryngoscope-assisted intubation on an airway manikin with and without an aerosol box in a random order. Contamination was simulated by nebulised Glo Germ. Primary outcome was number of contaminated front and back body regions pre-doffing and post-doffing of PPE of the intubator and assistant. Secondary outcomes were intubation time, Cormack-Lehane score, number of intubation attempts and participants’ feedback.ResultsThirty-six trainees completed the study interventions. The number of contaminated front and back body regions pre-doffing of PPE was significantly higher without the aerosol box (all p values<0.001). However, there was no significant difference in the number of contaminations post-doffing of PPE between using and not using the aerosol box, with a median contamination of zero. Intubation time was longer with the aerosol box (42.5 s vs 35.5 s, p<0.001). Cormack-Lehane scores were similar with and without the aerosol box. First-pass intubation success rate was 94.4% and 100% with and without the aerosol box, respectively. More participants reported reduced mobility and visibility when intubating with the aerosol box.ConclusionsAn aerosol box may significantly reduce exposure to contaminations but with increased intubation time and reduced operator’s mobility and visibility. Furthermore, the difference in degree of contamination between using and not using an aerosol box could be offset by proper doffing of PPE.

scholarly journals Factors Influencing the Association Between Coach and Athlete Rating of Exertion: a Systematic Review and Meta-analysis

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Darren Paul ◽  
Paul Read ◽  
Abdulaziz Farooq ◽  
Luke Jones
Keyword(s):  
Systematic Review ◽  
Perceived Exertion ◽  
Meta Analysis ◽  
Random Effect ◽  
Positive Association ◽  
Rating Of Perceived Exertion ◽  
Original Research ◽  
Eligibility Criteria ◽  
High Association ◽  
The Relationship

Abstract Background Subjective monitoring of rate of perceived exertion is common practice in many sports. Typically, the information is used to understand the training load and at times modify forthcoming sessions. Identifying the relationship between the athlete and coach’s interpretation of training would likely further benefit understanding load management. The aim of this systematic review was to evaluate the relationship between coaches’ rating of intended exertion (RIE) and/or rating of observed exertion (ROE) and athletes’ reported rating of perceived exertion (RPE). Methods The review was undertaken in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. We conducted a search of Medline, Google Scholar, Science Direct, SPORTDiscus, and Web of Science databases. We assessed the correlation between coach-reported RIE and/or ROE and RPE. Assessment for risk of bias was undertaken using the Quality Appraisal for Reliability Studies (QAREL) checklist. Inclusion criteria were (1) male and/or female individuals, (2) individual and/or team sport active participants, and (3) original research article published in the English language. Results Data from 19 articles were found to meet the eligibility criteria. A random effect meta-analysis based on 11 studies demonstrated a positive association of player vs. coach rating of RIE (r = 0.62 [95% CI 0.5 to 0.7], p < 0.001). The pooled correlation from 7 studies of player vs. coach rating on ROE was r = 0.64 95% CI (0.5 to 0.7), p < 0.001. Conclusion There was a moderate to high association between coach RIE and/or ROE and athlete-reported RPE and this association seems to be influenced by many factors. The suggestions we present in this review are based on imploring practitioners to consider a multi-modal approach and the implications of monitoring when using RPE. Trial Registration CRD42020193387

scholarly journals A Clinical Method for Identifying Scapular Dyskinesis, Part 2: Validity

2009 ◽  
Vol 44 (2) ◽  
pp. 165-173 ◽  
Author(s):  
Angela R. Tate ◽  
Philip McClure ◽  
Stephen Kareha ◽  
Dominic Irwin ◽  
Mary F. Barbe
Keyword(s):  
Athletic Training ◽  
National Collegiate Athletic Association ◽  
Collegiate Athletes ◽  
Scapular Dyskinesis ◽  
Clinical Method ◽  
3 Dimensional ◽  
Significant Difference ◽  
The Right ◽  
The Relationship ◽  
Scapular Motion

Abstract Context: Although clinical methods for detecting scapular dyskinesis have been described, evidence supporting the validity of these methods is lacking. Objective: To determine the validity of the scapular dyskinesis test, a visually based method of identifying abnormal scapular motion. A secondary purpose was to explore the relationship between scapular dyskinesis and shoulder symptoms. Design: Validation study comparing 3-dimensional measures of scapular motion among participants clinically judged as having either normal motion or scapular dyskinesis. Setting: University athletic training facilities. Patients or Other Participants: A sample of 142 collegiate athletes (National Collegiate Athletic Association Division I and Division III) participating in sports requiring overhead use of the arm was rated, and 66 of these underwent 3-dimensional testing. Intervention(s): Volunteers were viewed by 2 raters while performing weighted shoulder flexion and abduction. The right and left sides were rated independently as normal, subtle dyskinesis, or obvious dyskinesis using the scapular dyskinesis test. Symptoms were assessed using the Penn Shoulder Score. Main Outcome Measure(s): Athletes judged as having either normal motion or obvious dyskinesis underwent 3-dimensional electromagnetic kinematic testing while performing the same movements. The kinematic data from both groups were compared via multifactor analysis of variance with post hoc testing using the least significant difference procedure. The relationship between symptoms and scapular dyskinesis was evaluated by odds ratios. Results: Differences were found between the normal and obvious dyskinesis groups. Participants with obvious dyskinesis showed less scapular upward rotation (P &lt; .001), less clavicular elevation (P &lt; .001), and greater clavicular protraction (P  =  .044). The presence of shoulder symptoms was not different between the normal and obvious dyskinesis volunteers (odds ratio  =  0.79, 95% confidence interval  =  0.33, 1.89). Conclusions: Shoulders visually judged as having dyskinesis showed distinct alterations in 3-dimensional scapular motion. However, the presence of scapular dyskinesis was not related to shoulder symptoms in athletes engaged in overhead sports.

scholarly journals Bases de datos para Refining music tempo for an ergogenic effect on stationary cycling exercise

2020 ◽  
Vol 18 (1) ◽  
Author(s):  
Jorge Alberto Aburto Corona ◽  
Luis Fernando Aragón-Vargas
Keyword(s):  
Perceived Exertion ◽  
Random Order ◽  
Cycling Performance ◽  
Ergogenic Effect ◽  
Cycling Exercise ◽  
Physically Active ◽  
Warm Environment ◽  
Significant Difference ◽  
Fast Tempo ◽  
Post Hoc

Aburto-Corona, J. & Aragón-Vargas, L.F. (2017). Refining music tempo for an ergogenic effect on stationary cycling exercise. Pensar en Movimiento: Revista de Ciencias del Ejercicio y la Salud, 15(2), 1-12. The effect of music on exercise performance has been studied from many perspectives, but the results have not been as clear as expected, probably due to a lack of appropriate controls. The purpose of this study was to measure stationary cycling performance in a warm environment under carefully controlled conditions, modifying only the presence of music and its tempo. Ten physically active students, 24.5±3.6 years (mean±SD)  selected their favorite exercise music and performed a maximum cycling test. During subsequent visits to the laboratory, they pedaled at their preferred speed against a constant resistance (70% of maximum) in an environmentally controlled chamber (28.6±0.5 °C db and 65±3% rh) for 30 min, on three different days, without music (NM), medium tempo music (MT-120 bpm) or fast tempo music (FT-140 bpm), in random order. Perceived exertion (PE), heart rate (HR) and total work performed (W) were recorded. There was no significant difference among conditions for PE (4.47±1.52; 4.22±1.5; 3.83±2.06 a.u. for NM, MT and FT, respectively, p=.162) or HR (142.4±24.53; 142.6±24.37; 142.9±18.36 bpm for NM, MT and FT, respectively, p=.994), but W was different (43.4±19.02; 46.1±20.34; 47.1±20.97, kJ for NM, MT and FT, respectively, p=.009); post-hoc analysis showed that the W difference was only between FT and NM. Using individually selected preferred music in a carefully controlled environment, participants improved their spontaneous cycling performance only when the music had a fast tempo of 140 bpm.

scholarly journals Athletic Trainers' Knowledge Regarding Airway Adjuncts

2015 ◽  
Vol 10 (2) ◽  
pp. 164-169 ◽  
Author(s):  
Jessica R. Edler ◽  
Lindsey E. Eberman ◽  
Leamor Kahanov ◽  
Christopher Roman ◽  
Heather Lynne Mata
Keyword(s):  
Athletic Training ◽  
Athletic Trainers ◽  
Demographic Variables ◽  
Perceived Knowledge ◽  
Frequency Of Use ◽  
Significant Difference ◽  
The Difference ◽  
National Athletic Trainers Association ◽  
The Relationship ◽  
E Mail

Context Research suggests that knowledge gaps regarding the appropriate use of airway adjuncts exist among various health care practitioners, and that knowledge is especially limited within athletic training. Objective To determine the relationship between perceived knowledge (PK) and actual knowledge (AK) of airway adjunct use and the difference in PK after AK assessment. Design Knowledge assessment. Patients or Other Participants Two thousand athletic trainers received the survey via e-mail; 152 (7.6%) responded. Intervention(s) The AK assessment included 7 items based on the use and implementation of airway adjuncts based on the National Athletic Trainers' Association educational competencies. Perceived knowledge was measured using a well-established PK questionnaire, which also included 1 item to rate likelihood to pursue continuing education (CE). Main Outcome Measure(s) Perceived knowledge was compared pre- and posttest. Our demographic variables assessed how often lifesaving skills were used. We used total scores of the AK assessment to measure AK. We employed dependent t tests to determine the pre- and posttest differences in PK and likelihood to pursue CE. We used a correlation analysis to determine the relationship between PK and AK. We calculated separate analyses of variance to determine differences in AK between the frequencies of lifesaving skill use. Results We identified no significant change (t150 = −0.91, P = .37, 95% confidence interval = −0.17 to 0.06) in likelihood to pursue CE. Greater PK was weakly associated with greater AK (r = 0.36, P &lt; .001). We found a significant difference (F1,145 = 4.63, P = .03, effect size = 0.031, 1 − β = 0.57) between the frequency of use of lifesaving skills and AK. Conclusion We identified a knowledge gap among athletic trainers in the use of airway adjuncts. Although the likelihood to pursue CE score was high, the score did not significantly increase after completing the assessment. Participants who use lifesaving skills more frequently scored higher on the AK assessment, suggesting that the more frequently athletic trainers utilize a skill, the more knowledgeable they are.

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