Sports and Exercise Medicine – Open Journal (SEMOJ)
Recently Published Issues
December 2018
Volume 4, Issue 3
November, 2018
Volume 4, Issue 2
December, 2017
Volume 3, Issue 3
April, 2015
Volume 1, Issue 1
August, 2015
Volume 1, Issue 3
September, 2015
Volume 1, Issue 4
October, 2016
Volume 2, Issue 2
April, 2017
Volume 3, Issue 1
June, 2017
Volume 3, Issue 2
December, 2015
Volume 1, Issue 5
April, 2016
Volume 1,Issue 6
September, 2016
Volume 2, Issue 1
July, 2015
Volume 1, Issue 2
Happy Authors
"The submission, review and acceptance process of this journal was quick, professional, and easy to follow. I would highly recommend this journal for future submissions!"
"I got very impressive experience with SEMOJ during the peer review process even though the overall process was so bulky due to COVID-19 pandemic. The editorial staff supported and encouraged me till the publication was done. The journal is my favorite publication site and will share for other authors to look for a positive experience."
"The Sports and Exercise Medicine – Open Journal has provided me with an amazing experience. They facilitated the process of journal submission. Their peer review process provides excellent feedback. I am privileged to have my article published in the Sports and Exercise Medicine – Open Journal. I highly recommend publishing your research with the Sports and Exercise Medicine – Open Journal."
"I had an excellent experience with submitting my article. Reviewers provided critical, yet positive feedback and suggestions on editorial changes to my article. I will consider submitting articles to this journal in the future."
"I am very impressed with the quick response from SEMOJ through the whole process from submission until publication. Everything was completed in about 3-weeks. I am very satisfied working with SEMOJ and I am confident that other authors can look forward to a very positive experience too."
"The process of submission, review and the final outcome is remarkably fast with SEMOJ. Despite the review process being rigorous and double-blinded, we got the feedback real quick. Moreover, following our address of the comments from the Reviewers, the final decision made was communicated within just a few days. Subsequently, the proof was ready and the paper was published within a week. This is reflective of the journal’s professionalism, and as authors, we are highly satisfied with the overall experience."
"We are most impressed by the SEMOJ manuscript submission process. We received confirmation of all submissions, reviews were completed in a very timely manner and where assistance was needed from Editorial staff they were most helpful. The galley proof process was expeditious, with amended proofs sent following every submission. Lastly, the final layout of our paper is most professional and provides a high-quality representation of our research. Thank you for your assistance during the process from submission to publication."
Recently Published Articles
-
‘Making Weight’: The Perception and Impact of Weight Management on Female Boxers
PDF
441.66 KB Full-Text (HTML)
-
Oxygen Therapy for the Treatment of Experimental Autoimmune Encephalomyelitis
PDF
500.94 KB Full-Text (HTML)
-
Physical Activity Motives in the Exercise and Self-Esteem Relationship
PDF
384.41 KB Full-Text (HTML)
-
Agreement and Validity of Existing Anthropometric Calibration Models to Estimate Whole Body Density in Male Professional Football Players
PDF
966.92 KB Full-Text (HTML)
-
Hyperbaric Oxygen Attenuates Aortic Vasoconstriction after Simulated Microgravity in Rats
PDF
396.53 KB Full-Text (HTML)
-
Comparison of Anthropometric Equations and Dual X-ray Absorptiometry to Determine Body Composition in Active Breast Cancer Survivors
PDF
408.16 KB Full-Text (HTML)
-
The Effects of Societal and Structural Barriers on Participation among Individuals with Physical Disabilities
PDF
316.79 KB Full-Text (HTML)
-
The Athletic Intelligence Quotient and Performance in the National Football League
PDF
488.70 KB Full-Text (HTML)
-
Adoption of Change: A Systematic Review of the Transtheoretical Model
PDF
515.10 KB Full-Text (HTML)
-
The Roles of Physical Activity in Preventing Type 2 Diabetes Mellitus: The Implications for Sub-Saharan Africa
PDF
368.02 KB Full-Text (HTML)
-
Contributions to Global Self-Esteem: Domain Specific Self Perceptions in Athletes Vs. Non-Athletes
PDF
374.79 KB Full-Text (HTML)
-
Challenges and Practices in the Implementation of Coaching Manuals in Selected Youth Handball Coaching Program in Addis Ababa, Ethiopia
PDF
415.56 KB Full-Text (HTML)
-
A System or Method of Analysis for Injury Prevention in Sports, Youth Fastpitch Softball Pitchers: A Pilot Study
PDF
447.07 KB Full-Text (HTML)
-
Sports Science Data Protocol
PDF
416.26 KB Full-Text (HTML)
-
The Relationship between Pre-Season Testing Performance and Playing Time among NCAA Division II Men’s Soccer Athletes Over a Competitive Season: A Pilot Analysis
PDF
447.03 KB Full-Text (HTML)
-
Changes in Blood Bone Metabolism Markers with Oat Bran Consumption and Brisk Walking Exercise in Middle Age Hypercholesterolemic Women
PDF
423.99 KB Full-Text (HTML)
-
Commission on Accreditation of Athletic Training Education (CAATE): Transition from Bachelor to the Entry-Level Master’s–A Changing Landscape for Athletic Training Education
PDF
268.39 KB Full-Text (HTML)
-
To Study the Effects of Core Stability Exercise in Desk Job Patients with Mechanical Low Back Pain
PDF
318.62 KB Full-Text (HTML)
-
Effects of Compression Garments on Skeletal Muscle Physiology, Performance and Recovery in Young Healthy Adults: A Systematic Review
PDF
443.59 KB Full-Text (HTML)
-
Role of Exercise and Dietary Supplementation in Attenuation of Traumatic Brain Injury in American Football
PDF
373.90 KB Full-Text (HTML)
-
To Study the Effect of Myofascial Trigger Point Release in Upper Trapezius Muscle Causing Neck Disability in Patients with Chronic Periarthritis Shoulder
PDF
339.30 KB Full-Text (HTML)
-
Effectiveness of Compression Garments on Selected Physiological, Perceptual and Performance Measures While Traversing Austere Conditions at Altitude: A Pilot Study
PDF
449.70 KB Full-Text (HTML)
-
Factors Influencing Speed of Collegiate Wheelchair Basketball Players
PDF
398.04 KB Full-Text (HTML)
-
A Review of Martial Arts and Bone Health Status in Young and Older Population
PDF
334.08 KB Full-Text (HTML)
-
A Retrospective and Comparative Analysis of the Physical Fitness of Custody Assistant Classes Prior to Academy Training
PDF
476.49 KB Full-Text (HTML)
-
Effects of Different Types of Active Recoveries after Supramaximal Exercise on Exercise-Induced Stress and Subsequent Anaerobic Power Testing
PDF
545.71 KB Full-Text (HTML)
-
Heart Rate Intensity in Female Footballers and its Effect on Playing Position based on External Workload
PDF
593.08 KB Full-Text (HTML)
-
Mitochondrial Antioxidant Enzymes and Endurance Exercise-induced Cardioprotection against Ischemia-Reperfusion Injury
PDF
461.69 KB Full-Text (HTML)
-
Relationship between Elite Women’s Wheelchair Basketball Skills Testing and Future Success in the Sport
PDF
385.68 KB Full-Text (HTML)
-
IV Utilization or Access by Licensed Athletic Trainer in the Clinical Setting
PDF
245.37 KB Full-Text (HTML)
-
Effects of Dietary Nitrate Supplementation Over Four Weeks on Maximum Oxygen Consumption in Recreational Runners: A Pilot Study
PDF
374.01 KB Full-Text (HTML)
-
Monitoring of Core Body Temperature During Exertional Heat Illnesses Emergencies
PDF
292.96 KB Full-Text (HTML)
-
Agreement Between Methods to Estimate Residual Lung Volume: A Methodological Investigation
PDF
383.62 KB Full-Text (HTML)
-
Linearity of the Scale for Mass and Volume within the Air Displacement Plethysmograph (BOD POD): A Methodological Investigation
PDF
444.86 KB Full-Text (HTML)
-
Effects of a Periodized Training Program and a Traditional Military Training Program on Functional Movement and Y-Balance Tests in ROTC Cadets
PDF
405.09 KB Full-Text (HTML)
-
Motivational State Does Not Affect All-Out Short Duration Exercise Performance
PDF
421.12 KB Full-Text (HTML)
-
An Investigation into Physical Activity Levels in Primary School Playgrounds
PDF
570.41 KB Full-Text (HTML)
-
The Importance of Measuring Body Composition in Professional Football Players: A Commentary
PDF
471.54 KB Full-Text (HTML)
-
Agreement Between Methods to Determine Procedure for Maximal Exhalation During Hydrostatic Weighing: A Methodological Investigation
PDF
421.20 KB Full-Text (HTML)
-
Exercise as Medicine: Possible Applications for Improving Home Based Programs
PDF
318.49 KB Full-Text (HTML)
-
The Effects of Hyperbaric Oxygen Therapy on Reduction of Edema and Pain in Athletes With Ankle Sprain in the Acute Phase: A Pilot Study
PDF
447.68 KB Full-Text (HTML)
-
Effects of 4 Weeks High-Intensity Training on Running and Cycling Performance in Well-Trained Triathletes
PDF
471.05 KB Full-Text (HTML)
-
Relationship Between Pre-Season Testing Performance and Playing Time among NCAA DII Basketball Players
PDF
561.65 KB Full-Text (HTML)
-
Effects of a Six-Week Randomized Training Program on Speed and Agility in Previously Trained Adolescent Males
PDF
357.45 KB Full-Text (HTML)
-
Combined Effects of Six Weeks Oat Bran Consumption and Brisk Walking Exercise on Blood Lipid Profiles in Hypercholesterolemia Women Aged 40 to 50 Years
PDF
520.19 KB Full-Text (HTML)
-
Promoting the Health Benefits of Walking and Bicycling to Work: A Qualitative Exploration of the Role of Healthcare Providers in Addressing Barriers to Active Commuting
PDF
549.90 KB Full-Text (HTML)
-
Salivary Biomarkers in Children: Exercise, Physical Activity and Obesity Studies
PDF
456.03 KB Full-Text (HTML)
-
Will the ‘Pokémon’ be Heroes in the Battle Against Physical Inactivity?
PDF
308.85 KB Full-Text (HTML)
-
Physiological Characteristics of Brazilian Jiu Jitsu and Judo as Compared To Muay Thai
PDF
449.46 KB Full-Text (HTML)
-
A Comparison of the Degree of Perceived Exertion by Participants In Nordic Walking and Level Walking at Equal Levels of Relative Exercise Intensity
PDF
542.76 KB Full-Text (HTML)
-
Changes of Bone Metabolism Markers and Muscular Performance with Combined Aerobic Dance Exercise and Honey Supplementation in Adult Women
PDF
492.57 KB Full-Text (HTML)
-
The Interventional Use of Water Treadmill Running During Long Periods of Injury
PDF
557.30 KB Full-Text (HTML)
-
Retrospective Designs in Sports Injury Surveillance Studies: All is not Lost
PDF
303.20 KB Full-Text (HTML)
-
The Effect of a Heel Insert Intervention on Achilles Tendon Loading during Running in Soccer
PDF
575.15 KB Full-Text (HTML)
-
Defining Different Types of Interval Training: Do we need to use more specific terminology?
PDF
326.76 KB Full-Text (HTML)
-
A Proposal for Functional Screening of the Throwing Kinetic Chain in Baseball Pitchers to Assess Shoulder and Elbow Injury Risk
PDF
603.94 KB Full-Text (HTML)
-
Application of Video-Based Methods for Competitive Swimming Analysis: A Systematic Review
PDF
1.67 MB Full-Text (HTML)
-
The Threshold of Physical Fitness in terms of Maximum Oxygen Uptake as a Predictive Factor for Achieving Prosthetic Walking in Elderly with Unilateral Trans-femoral Amputation or Hip Disarticulation
PDF
446.30 KB Full-Text (HTML)
-
Social Competence as a Role-Player in the Game between Motor Performance and Organized Sports Participation among School-Age Children
PDF
383.90 KB Full-Text (HTML)
-
Early Loading after Closed Wedge High Tibial Osteotomy for Knee Arthritis
PDF
388.37 KB Full-Text (HTML)
-
Quality Health and Physical Education: Facilitating a Healthy Mind in a Healthy Body
PDF
307.07 KB Full-Text (HTML)
-
Predictive Validity of Critical Power, The Onset of Blood Lactate and Anaerobic Capacity for Cross-Country Mountain Bike Race Performance
PDF
573.31 KB Full-Text (HTML)
-
Different Sports in Adolescence: Effect on Lipid Profile, Glucose Metabolism, Body Composition, Bone Density, Bone Quality, Bone Markers, Vascular Function and Structure, Pituitary and Hypothalamic Antibodies
PDF
404.38 KB Full-Text (HTML)
-
Effects of Resistance Training on Bone and Muscle Mass in Older Women: A Review
PDF
405.58 KB Full-Text (HTML)
-
Moving Toward Clinic-Based Motion Analysis: Kinect®Camera as an Example
PDF
426.73 KB Full-Text (HTML)
-
Influence of Manipulation in the Peripheral Nervous System Tests: A Randomized Controlled Trial
PDF
436.16 KB Full-Text (HTML)
-
Effects of Chocolate Malt Drink Consumption Combined with Aerobic Dance Exercise on Blood Bone Metabolism Markers, Antioxidant Enzymes and Aerobic Capacity in Young Females
PDF
403.70 KB Full-Text (HTML)
-
VO2 Kinetics during Different Forms of Cycling Exercise on Land and in Water
PDF
468.80 KB Full-Text (HTML)
-
Using the Placebo Effect to Isolate Control Mechanisms of Athletic Performance: A Research Protocol
PDF
454.51 KB Full-Text (HTML)
-
Functional Movement Analysis in the Differential Diagnosis of a Patient with a Posterolateral Corner Knee Injury
PDF
411.94 KB Full-Text (HTML)
-
Effect of a 6 Week Plyometric Training Program on Agility, Vertical Jump Height and Peak Torque Ratio of Indian Taekwondo Players
PDF
298.97 KB Full-Text (HTML)
-
Development of a Regression Model for the Treadmill Ground Reaction Force Components
PDF
488.10 KB Full-Text (HTML)
-
The Gluteus Medius Activation in Female Indoor Track Runners is Asymmetrical and May be Related to Injury Risk
PDF
516.69 KB Full-Text (HTML)
-
Simultaneous Rupture of Patella Tendon with Tibial Tubercle Avulsion Fracture, Anterior Cruciate Ligament Avulsion Fracture of the Tibial Spine in a Skeletally Mature Patient: A Case Report
PDF
555.40 KB Full-Text (HTML)
-
An Integrated Analysis of Leg Length Differences and the Effect of Correctional Techniques on Stroke Mechanics and Performance Indicators in Competitive Cyclists
PDF
605.40 KB Full-Text (HTML)
About the Journal
Sports and Exercise Medicine – Open Journal (SEMOJ), often termed as sports medicine, deals with the physical fitness, treatment, and prevention of injuries related to sports and exercise.
Earlier, physicians who were trained professionally and deployed in the sports teams to treat injuries caused during a game. In the late 20th-century sports medicine emerged as a distinct field and significant efforts have been made within the public health community to encourage people to become more physically active.
SEM specialists are pioneers in diagnosing and treating any condition encountered during regular exercises or sports activity. Such physicians treat musculoskeletal injuries apart from the other conditions such as exercise-induced asthma, diabetes in sports, female athlete triad, screening cardiac abnormalities, unexplained underperformance syndrome, etc.
However, Openventio aims at the widespread propagation of sports and exercise medicine and research through its Open Access (OA) journal for the welfare of the sports community.
Aims and Scope
Sports and Exercise Medicine – Open Journal (SEMOJ) is dedicated to the open dissemination and robust discussion of the techniques used involving medical care of injury and illness in sport.
SEMOJ covers a wide array of subjects as given below
- Physical fitness
- Sports physiotherapy
- Kinesiology
- Sports injuries and management
- Exercise medicine
- Physical activity and weight management
- Diet and supplements in sports and exercise
- Sports biomechanics
- Sports law
- Sports rehabilitation
- Sports nutrition
- Exercise physiology
- Performance endurance and testing
- Health promotion
- Sports and disability
Submissions for this journal are accepted from the very basic sports and exercise medicine research to the novel advancements.
The audience of SEMOJ encompasses all medical professionals involved in the training and care of the competitive and recreational athlete, including orthopedic surgeons, sports scientists, podiatrists, physiatrists, dentists, dietitians, primary care physicians, optometrists, exercise physiologists, athletic trainers, physical therapists, nurses, and others.
The journal welcomes all types of articles such as original research, review, case-report, mini-review, editorial, short-communication, book-review, opinion, commentary, letter to the editor, conference, proceedings, technical report, errata, and illustrations.
We are open to receive comments and corrections from subject experts to improve the quality of our journal.
Article in press
-
Agreement and Validity of Existing Anthropometric Calibration Models to Estimate Whole Body Density in Male Professional Football Players
Provisional PDF
966.92 KB Full-Text (HTML)
Abstract [+]
Introduction
To date no calibration models exist to estimate whole body density (Db) of professional footballers, as such the development of practical anthropometric calibration models to make sound body composition judgements is imperative. The aim of this study was to investigate the agreement and validity of estimating Db from 15 existing calibration models through comparison to a criterion method of hydrostatic weighing (HW) in male professional footballers.
Materials and Methods
Data were gathered from a total of n=206 professional football participants (x±s; age=24.1±5.4-years, body mass=78.8±8.4 kg, stature=180.1±7.0 cm, Db 1.075±0.01 g.ml-1). Bland and Altman limits of agreement (LoA) approaches were used to determine bias and random variation derived from the calibration models.
Results
Bias and random errors for the published calibration models ranged from -0.005 to +0.015 g.ml-1 and 1.012 to 1.090 g.ml-1 respectively. A priori criterion (±3.8% p=<0.05 (g.ml-1)) was set as acceptable limits for the LoA method of which 13 calibration models found that (on average) estimated Db derived from HW was greater than Db derived from the models. Discussion A rank order of LoA identified the best model to use, however, LoA were not narrow enough for measurements to be of practical use and in most instances, selected models are not appropriate for estimating Db in male professional footballers. Keywords Whole body density; Calibration models; Anthropometry; Professional football players; Agreement; Validity.
-
Physical Activity Motives in the Exercise and Self-Esteem Relationship
Provisional PDF
384.41 KB Full-Text (HTML)
Abstract [+]
Aims and Objectives
The purpose of this investigation was to extend research examining physical and social influences in the exercise/self-esteem relationship by investigating the moderating role of physical activity motives. Research reveals multiple motives for exercise participation beyond physical health enhancement. It is thought that these motives may play an important role in the relationship between exercise and self-esteem. Previous research has established the contribution of the physical self-system in the relationship. Furthermore, research examining the contribution social self-system has shown promise, yet the mechanisms operating in the relationship are less clear. It was hypothesized that motivation for physical activity participation may be such a mechanism.
Results
A population of 147 undergraduates completed assessments of physical activity participation, motives for physical activity, and physical, social and global self-perceptions. As expected, physical activity participation influenced self-esteem through both physical and social systems. Additionally, socially motivated exercisers exhibited greater self-esteem enhancement through the social as opposed to the physical self-system.
Conclusion
The hypothesis that physical activity motives would play an important role in determining the pathway through which physical activity participation influences self-esteem was partially supported. Results showed that those who reported social motives for physical activity showed greater enhancement in self-esteem through the social self-system, while physical motives did not serve a moderating role. The findings from the present investigation are important not only from the perspective of self-esteem theory but also with regard to the numerous practical implications of the results. The findings confirm that the relationship between exercise participation and self-esteem is more complex than previously thought in that physical activity participation influences self-esteem through multiple pathways. What remains to be investigated is how to best flesh out which pathway is more meaningful to the exerciser and then how to best serve the interests of the exerciser with the ultimate goal of enhancing self-esteem.
Keywords
Self-esteem, Physical activity, Exercise, Self-concept, Motives.
-
Oxygen Therapy for the Treatment of Experimental Autoimmune Encephalomyelitis
Provisional PDF
500.94 KB Full-Text (HTML)
Abstract [+]
Background
Multiple sclerosis (MS) is an immune-mediated disease of the central nervous system (CNS). Experimental autoimmune encephalomyelitis (EAE) is a widely used animal model of MS. Oxygen therapy, such as hyperbaric oxygen (HBO) or normobaric oxygen (NBO), has been advanced as a potential treatment option to allay the motor and sensory deficits associated with MS. However, it is unclear whether any therapeutic benefits derived from treatment are a result of pressurized oxygen or simply pure oxygen administration. This study aimed to explore whether pressurized oxygen (HBO) or sea-level oxygen (NBO) would attenuate the motor and sensory deficits associated with EAE.
Methods
Forty-two male Harlan Lewis rats were randomly assigned to one of four conditions: MBP/HBO, MBP/NBO, MBP/no treatment, or a vehicle group. Injections of MBP or vehicle were administered on day 1, and animals were allowed one-week to recover. Following recovery, animals were administered HBO at 2.0 atmospheres absolute (ATA) or sea-level oxygen for 60-minutes daily. Mechanical paw withdrawal threshold (MPWT) testing was conducted on the first day and every alternate day after the start of treatment to assess the development of tactile allodynia. Motor impairment tests were performed twice daily (immediately prior to and after oxygen treatment) to assess for the presence of motor deficits or paralysis.
Results
On days 14 through 18, animals injected with MBP had a greater level of motor impairment compared to the vehicle control group. Interestingly, results also indicated that NBO was as effective as HBO in attenuating EAE symptoms.
Conclusion
In conclusion, these results underscore the need for further research to determine the ideal parameters of oxygen treatment, particularly whether pressurization is necessary to attenuate symptoms of EAE.
Keywords
Experimental autoimmune encephalomyelitis; Multiple sclerosis; Animal model.
-
‘Making Weight’: The Perception and Impact of Weight Management on Female Boxers
Provisional PDF
441.66 KB Full-Text (HTML)
Abstract [+]
Introduction
Boxing is a weight categorised sport in which athletes are expected to be weighed prior to competition so that the athletes are matched with similar size, strength and power attributes. By obtaining and maintaining a certain weight may result in boxers typically engaging in extreme weight loss practices to ‘make weight’, irrespective of their overall health and well-being. Therefore, this research aimed to establish the experiences and perceptions of weight management of female boxers how they engage with ‘making weight’ practices and the impact on their overall well-being.
Methods
In-depth semi-structured one-to-one interview’s were conducted with five elite level female amateur boxers over a digital, online platform. A six-stage thematic analysis was used and data collated into themes and sub-themes.
Results
Data identified 5 key themes and consisted of: emotions surrounding weight gain; long-term behavioural impacts; guidance and justifications; comparison to other boxers; and weight management methods. These accounts highlighted the long-term impact engaging in such weight loss methods had on female boxers both physically and psychologically.
Conclusion
Typically, boxers engaged in strict and extreme weight-loss behaviours due to negative emotions surrounding weight gain. Significantly these behaviours and emotions have a long-term impact and continue after retirement from boxing.
Keywords
Female boxers; Weight management; Disordered eating; Weight loss practices.
Current Issue
-
Comparison of Anthropometric Equations and Dual X-ray Absorptiometry to Determine Body Composition in Active Breast Cancer Survivors
PDF
408.16 KB Full-Text (HTML)
Full-Text (HTML)
Abstract [+]
Objective
The purpose of this study was to 1) compare the body composition values of an active group of breast cancer survivors (BCS) determined by dual X-ray absorptiometry (DXA) and anthropometry, and 2) compare the bone mineral density of the upper thoracic region to assess the effect of tumor burden on bone health.
Design and Methods
Forty (n=40) breast cancer survivors from a local competitive Dragon Boat Team were measured as part of team assessments. ANOVA with Dunn’s post-hoc testing was used to compare results of DXA, body density, and body composition estimated from anthropometry. Bland-Altman testing and correlational analysis were calculated.
Results
Percentage of fat measure by DXA was significantly higher than values used to estimate body fat from skinfold measures or from body density equations (DXA 41.1±6.0% vs. 3-site skinfolds 28.8±4.9%, 4-site skinfolds, 22.1±4.1%, skinfold and body density, 31.8±9.4%, respectively, p<0.05). Post-hoc testing revealed that all values were significantly different and the strongest correlation with DXA was skinfolds at three sites was r=0.81. Regional (upper thoracic) bone mineral density was not significantly different based on tumor side diagnosis (breast cancer diagnosis side versus healthy, 0.971±0.198 vs. 0.988±0.190 gm*cc-1). Anthropometry and bilateral bone mineral density characteristics are presented to serve as a comparative sample of BCS for future studies. Conclusion As body composition is an important factor in long-term cancer survivorship, we found the use of skinfold measures inadequate to accurately determine percentage of fat in this group of active female BCS. As a result, recommendations aimed at achieving an ideal body composition based solely on anthropometry would have grossly underestimated fat mass, which may lead to overall clinically poorer outcomes. Keywords Breast cancer; Body composition; Percentage fat; Bone mineral density.
-
Hyperbaric Oxygen Attenuates Aortic Vasoconstriction after Simulated Microgravity in Rats
PDF
396.53 KB Full-Text (HTML)
Full-Text (HTML)
Abstract [+]
Background
The hindlimb suspended (HLS) rat model has been used in land-based research to evaluate effects of simulated microgravity. Previous research demonstrated that 2-4 weeks of HLS reduced vasoconstrictive responses of aortic, mesenteric, and femoral arterial rings to phenylephrine (PHE) while acute exposure to hyperoxia amplified constrictive responses to PHE. The purpose of this study was to determine if hyperbaric oxygen treatment (HBO) during HLS would reverse the attenuation of the vasoconstrictive response.
Methods
Five-month-old male Sprague Dawley rats were randomly divided into aging controls (AC), AC-HBO, HLS, and HLS-HBO. Groups receiving HBO (AC-HBO; HLS-HBO) were placed in a cage that was fitted for the animal hyperbaric chamber to maintain HLS. HBO groups received 24 treatments, once a day, 6 d/week using a wound care protocol. The chamber was flushed with 100% oxygen, compressed over 10 min to 2.5 atmospheres absolute (ATA) (22.5 psig), a 90-minute treatment, then a 10 min decompression. After 28 d of HLS, animals were sacrificed under isoflurane anesthesia and thoracic aorta segments isolated. Relaxation of aortic rings was measured in response to acetylcholine (ACh) and sodium nitroprusside (SNP) after pre-constriction with PHE (3×10-7). Constriction of aortic rings was also determined in response to increasing concentrations of PHE. All drugs were administered cumulatively in vessel baths at 10-10-10-4 M. Data were analyzed using four-parameter (i.e., minimum, maximum, EC50, slope) nonlinear regression, and groups compared using 2×2 ANOVA with HBO and HLS as main effects.
Results
Responses to ACh and SNP were not affected by HLS or HBO. However, in response to PHE, there was a decrease in maximum vasoconstriction in HLS compared to controls (44.7±7.3% vs 82.4±6.0%, respectively, p≤0.05) and in HBO compared to controls (48.5±6.5% vs 78.6±6.8%, p≤0.05).
Conclusion
These results indicate that PHE-induced constriction of thoracic aorta is decreased after HLS. HBO did not reverse HLS-induced reductions in contractile responses; instead, HBO independently reduced PHE-stimulated constriction of aortic segments. This suggests that HBO may be useful in conditions where constriction is enhanced, such as diabetes.
Keywords
Hyperbaric oxygen; Vascular reactivity; Hindlimb suspension.
Previous Issue
-
The Athletic Intelligence Quotient and Performance in the National Football League
PDF
488.70 KB Full-Text (HTML)
Abstract [+]
Introduction
In the realm of competitive athletics, numerous variables have been examined for predictive utility with respect to player selection/development and outcomes on the field. Notwithstanding important advances, the current predictors only account for a modest amount of variance in outcomes of relevance in the National Football League (NFL).
Objective
The primary objective of this study was to investigate the predictive validity of a new measure of athletic intelligence, the Athletic Intelligence Quotient (AIQ), which is based on the empirically supported Cattell-Horn-Carroll (CHC) Theory of Intelligence. The predictive validity of the AIQ was determined in relation to performance metrics from 146 NFL players across several seasons.
Results
Hierarchical regression analyses indicate that specific AIQ factors accounted for a statistically significant increase in the explanation of variance beyond the current level of evaluation for several performance metrics (e.g., career approximate value; sacks, tackles, rushing yards). Further, specific factors of the AIQ are related to position specific statistics, offering the possibility that performance prediction can be focused in for the specific skills required by a given position.
Discussion
Given the recent impact of analytics in professional sports, and the significant findings noted in the current investigation, the authors discuss the potential importance of the AIQ in the selection and coaching processes.
The Effects of Societal and Structural Barriers on Participation among Individuals with Physical Disabilities
PDF 316.79 KB
Full-Text (HTML)
Abstract [+]
The 2008 Physical Activity Guidelines recommend that the more than 53 million people living with a physical disability in the United States to participate in regular physical activities consisting of both aerobic and anaerobic components, if possible. Also, if individuals with physical disabilities are unable to meet the recommended physical activity guidelines, they are encouraged to do as much as their physical disability permits. Despite the recommended guidelines, several individuals with physical disabilities do not participate in regular physical activities. Prior research suggests that several societal and structural barriers in sport and exercise environments often negatively affect individuals with physical disabilities. Thus, it is essential for family members, healthcare practitioners, rehabilitation/recreational teams, and community leaders to encourage individuals with physical disabilities to conquer barriers that restrict participation.
