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https://www.readbyqxmd.com/read/28557856/crossfit-based-high-intensity-power-training-improves-maximal-aerobic-fitness-and-body-composition-retraction
#1
(no author information available yet)
No abstract text is available yet for this article.
May 23, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28524725/a-sport-education-fitness-season-s-impact-on-students-fitness-levels-knowledge-and-in-class-physical-activity
#2
Jeffery Kurt Ward, Peter A Hastie, Danielle D Wadsworth, Shelby Foote, Sheri J Brock, Nikki Hollett
PURPOSE: The purpose of this study was to determine the extent to which a sport education season of fitness could provide students with recommended levels of in-class moderate-to-vigorous physical activity (MVPA) while also increasing students' fitness knowledge and fitness achievement. METHOD: One hundred and sixty-six 5th-grade students (76 boys, 90 girls) participated in a 20-lesson season called "CrossFit Challenge" during a 4-week period. The Progressive Aerobic Cardiovascular Endurance Run, push-ups, and curl-ups tests of the FITNESSGRAM® were used to assess fitness at pretest and posttest, while fitness knowledge was assessed through a validated, grade-appropriate test of health-related fitness knowledge (HRF)...
May 19, 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28512155/functional-high-intensity-training-improves-pancreatic-%C3%AE-cell-function-in-adults-with-type-2-diabetes
#3
Stephan Nieuwoudt, Ciarán E Fealy, Julie A Foucher, Amanda R Scelsi, Steven K Malin, Mangesh R Pagadala, Michael Rocco, Bartolome Burguera, John P Kirwan
Type 2 diabetes (T2D) is characterized by reductions in β-cell function and insulin secretion on the background of elevated insulin resistance. Aerobic exercise has been shown to improve β-cell function, despite a subset of T2D patients displaying "exercise resistance". Further investigations into the effectiveness of alternate forms of exercise on β-cell function in the T2D patient population are needed. We examined the effect of a novel 6-week CrossFit™ Functional High Intensity Training (F-HIT) intervention on β-cell function in 12 sedentary adults with clinically diagnosed T2D (54±2 years, 166±16 mg/dL fasting glucose)...
May 16, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28399623/avoiding-misperception-and-misuse-of-crossfit%C3%A2-seeking-evidence-based-best-practice-recommendations-on-training-and-injury
#4
Scott N Drum, Bryanne N Bellovary Y, Randall L Jensen, Maggy T Moore, Lars Donath
No abstract text is available yet for this article.
May 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28389398/-numb-leg-in-a-crossfit-athlete-a-case-presentation
#5
Stephan Esser, Mckennan Thurston, Krishna Nalluri, Aurelio Muzaurieta
Participation in CrossFit athletics and Olympic-style lifting by the general populace has rapidly increased in the last 10 years. Such athletic engagement poses unique, inadequately defined risks to the participant. We describe the case of a 36-year-old man who presented to an outpatient sports medicine clinic with 6 weeks of numbness and tingling in the lateral right proximal thigh. After thorough examination and electromyographic testing, he was found to have a lateral femoral cutaneous neuropathy caused by performing supine gluteal bridges with a weighted barbell resting across his anterior thighs...
April 5, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28363035/the-benefits-and-risks-of-crossfit-a-systematic-review
#6
Jena Meyer, Janet Morrison, Julie Zuniga
With the increase in popularity of the CrossFit exercise program, occupational health nurses may be asked questions about the appropriateness of CrossFit training for workers. This systematic literature review was conducted to analyze the current research on CrossFit, and assess the benefits and risks of this exercise strategy. Thirteen studies ( N = 2,326 participants) examined the use of CrossFit training among adults; CrossFit is comparable to other exercise programs with similar injury rates and health outcomes...
March 1, 2017: Workplace Health & Safety
https://www.readbyqxmd.com/read/28344451/retrospective-injury-epidemiology-and-risk-factors-for-injury-in-crossfit
#7
Alicia M Montalvo, Hilary Shaefer, Belinda Rodriguez, Tan Li, Katrina Epnere, Gregory D Myer
The objective of the study is to examine injury epidemiology and risk factors for injury in CrossFit athletes. A survey was administered to athletes at four owner-operated facilities in South Florida. Respondents reported number, location of injury, and training exposure from the preceding six months and answered questions regarding potential risk factors for injury. Fifty out of 191 athletes sustained 62 injuries during CrossFit participation in the preceding six months. The most frequently injured locations were the shoulder, knee, and lower back...
March 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28253059/are-injuries-more-common-with-crossfit-training-than-other-forms-of-exercise
#8
Chelsey Klimek, Christopher Ashbeck, Alexander J Brook, Chris Durall
Clinical Scenario: CrossFit is a form of exercise that incorporates rapid and successive high-intensity, ballistic movements. As CrossFit becomes an increasingly popular fitness option, it is important to determine how rates of injury compare to more traditional forms of exercise. This review was conducted to ascertain the incidence of injury with CrossFit relative to other forms of exercise. Focused Clinical Question: Are injuries more common with CrossFit training than other forms of exercise? Summary of Key Findings The literature was searched for studies that compared injury rates among individuals who participated in CrossFit fitness programs to participants in other exercise programs The search initially yielded >100 results which was narrowed down to three level 2b retrospective cohort studies that was deemed to have met inclusion/exclusion criteria In all three reviewed studies, the reported incidences of injuries associated with CrossFit training programs were comparable or lower than rates of injury in Olympic weightlifting, distance running, track and field, rugby, or gymnastics...
March 2, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28195976/self-reported-measures-of-strength-and-sport-specific-skills-distinguish-ranking-in-an-international-online-fitness-competition
#9
Paul R Serafini, Yuri Feito, Gerald T Mangine
To determine if self-reported performance measures could distinguish ranking during the 2016 CrossFit Open, data from three thousand male (n=1500; 27.2±8.4 y; 85.2±7.9 kg; 177.0±6.5 cm) and female (n=1500, 28.7±4.9 y; 63.7±5.8 kg; 163.7±6.6 cm) competitors was used for this study. Competitors were split by gender and grouped into quintiles (Q1-Q5) based upon their final ranking. Quintiles were compared for one-repetition maximum (1RM) squat, deadlift, clean and jerk (CJ), snatch, 400-m sprint, 5,000-m run, and benchmark workouts (Fran, Helen, Grace, Filthy-50, and Fight-gone-bad)...
February 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28065990/delayed-diagnosis-of-an-isolated-posterolateral-corner-injury-a-case-report
#10
Patrick Welsh, Christopher DeGraauw, David Whitty
INTRODUCTION: Isolated injuries to the posterolateral corner of the knee are a rare and commonly missed injury associated with athletic trauma, motor vehicle accidents, and falls. Delayed or missed diagnoses can negatively impact patient prognosis, contributing to residual instability, chronic pain, and failure of surgical repair to other ligaments. CASE PRESENTATION: A 44-year-old male CrossFit athlete presented with a history of two non-contact hyperextension injuries to his left knee while walking on ice...
December 2016: Journal of the Canadian Chiropractic Association
https://www.readbyqxmd.com/read/28051964/response-is-high-intensity-functional-training-hift-crossfit-safe-for-military-fitness-training
#11
Walker S C Poston, Christopher K Haddock, Katie M Heinrich, Sara A Jahnke, Nattinee Jitnarin, David B Batchelor, Yuri Feito, Richard R Suminski
No abstract text is available yet for this article.
January 2017: Military Medicine
https://www.readbyqxmd.com/read/28051963/letter-is-high-intensity-functional-training-hift-crossfit-safe-for-military-fitness-training
#12
Francis G O'Connor, Patricia A Deuster, John Barrett, Sean F Kane, Patrick Depenbrock
No abstract text is available yet for this article.
January 2017: Military Medicine
https://www.readbyqxmd.com/read/27994826/crossfit-%C3%A2-instructor-demographics-and-practice-trends
#13
Gregory R Waryasz, Vladimir Suric, Alan H Daniels, Joseph A Gil, Craig P Eberson
CrossFit(®) is an increasingly popular exercise modality that uses high intensity power training. The literature to date regarding CrossFit(®) has focused on its benefits to VO2 Max, body composition and the motivational variables of participants of CrossFit(®). A computerized survey was distributed to CrossFit(®) instructors using Survey Monkey(®) (Palo Alto, CA, USA). One hundred and ninety-three CrossFit(®) instructors responded to the survey. Of these 86.6% (155/179) reported being a certified CrossFit(®) instructor with 26...
November 17, 2016: Orthopedic Reviews
https://www.readbyqxmd.com/read/27870750/mapping-coaches-views-of-participation-in-crossfit-to-the-integrated-theory-of-health-behavior-change-and-sense-of-community
#14
Katie M Heinrich, Taran Carlisle, Ainslie Kehler, Sarah J Cosgrove
Group-based training through CrossFit has recently exploded in popularity. Anecdotally, participants often make lifestyle changes and experience improved fitness. Participation factors were mapped to the Integrated Theory of Health Behavior Change and "sense of community" constructs. Key informant interviews were conducted with 6 CrossFit gym owners/coaches. Data were thematically coded with NVivo 10. Results revealed key factors that both facilitated and restricted participation in CrossFit. Findings provide implications for future theory application and highlight how to improve initiation and adherence by capitalizing on community building and taking steps to reduce intimidation and cost, facilitate realistic goals, and ensure social support...
January 2017: Family & Community Health
https://www.readbyqxmd.com/read/27849484/the-benefits-of-high-intensity-functional-training-fitness-programs-for-military-personnel
#15
Christopher K Haddock, Walker S C Poston, Katie M Heinrich, Sara A Jahnke, Nattinee Jitnarin
INTRODUCTION: High intensity functional training (HIFT) programs are designed to address multiple fitness domains, potentially providing improved physical and mental readiness in a changing operational environment. Programs consistent with HIFT principals such as CrossFit, SEALFIT and the US Marine Corps' High Intensity Tactical Training (HITT) are increasingly popular among military personnel. The goal of HIFT programs is to produce high levels of cardiorespiratory fitness, endurance and strength that exceed those achieved by following current physical activity recommendations...
November 2016: Military Medicine
https://www.readbyqxmd.com/read/27822169/the-effect-of-six-days-of-dietary-nitrate-supplementation-on-performance-in-trained-crossfit-athletes
#16
Samuel J Kramer, Daniel A Baur, Maria T Spicer, Matthew D Vukovich, Michael J Ormsbee
BACKGROUND: While it is well established that dietary nitrate reduces the metabolic cost of exercise, recent evidence suggests this effect is maintained 24 h following the final nitrate dose when plasma nitrite levels have returned to baseline. In addition, acute dietary nitrate was recently reported to enhance peak power production. Our purpose was to examine whether chronic dietary nitrate supplementation enhanced peak power 24 h following the final dose and if this impacted performance in a heavily power-dependent sport...
2016: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/27766133/the-effect-of-a-moderately-low-and-high-carbohydrate-intake-on-crossfit-performance
#17
Kurt A Escobar, Jacobo Morales, Trisha A Vandusseldorp
CrossFit is a metabolically demanding strength and conditioning method which performance may benefit from a carbohydrate (CHO)-rich diet. This study investigated the effect of three consecutive days of high CHO intake on CrossFit performance and corresponding metabolically -related variables in strength trained individuals. Eighteen subjects with a CHO intake of <6 g/kg/day were randomly assigned into a CHO (n = 9) or control (C) group (n =9) and underwent a 9-day training protocol. During days 1, 5, and 9, performance was measured as repetitions completed during a 12 minute CrossFit workout...
2016: International Journal of Exercise Science
https://www.readbyqxmd.com/read/27753214/how-to-make-stone-soup-is-the-paleo-diet-a-missed-opportunity-for-anthropologists
#18
Melanie L Chang, April Nowell
For the past few years, people everywhere have been "going Paleo." Websites and social media touting the benefits of eating a "Paleo diet" and following a "Paleolithic life style" serve as calls to arms for health-conscious individuals seeking information about the latest health and fitness trends. Many of these people participate in programs such as Crossfit, which involve major social and life-style modification components and therefore facilitate the dissemination of dietary fads.(1) The PALEOf(x)(TM) conference, which bills itself as "the world's premier holistic wellness event," has attracted sellout crowds of thousands of attendees for the last four years...
September 2016: Evolutionary Anthropology
https://www.readbyqxmd.com/read/27747629/temperature-rise-during-removal-of-fractured-components-out-of-the-implant-body-an-in-vitro-study-comparing-two-ultrasonic-devices-and-five-implant-types
#19
Eric W Meisberger, Sjoerd J G Bakker, Marco S Cune
BACKGROUND: Ultrasonic instrumentation under magnification may facilitate mobilization of screw remnants but may induce heat trauma to surrounding bone. An increase of 5°C is considered detrimental to osseointegration. The objective of this investigation was to examine the rise in temperature of the outer implant body after 30 s of ultrasonic instrumentation to the inner part, in relation to implant type, type of ultrasonic equipment, and the use of coolants in vitro. METHODS: Two ultrasonic devices (Satelec Suprasson T Max and Electro Medical Systems (EMS) miniMaster) were used on five different implant types that were provided with a thermo couple (Astra 3...
December 2015: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/27714843/acute-tendon-changes-in-intense-crossfit-workout-an-observational-cohort-study
#20
F Y Fisker, S Kildegaard, M Thygesen, K Grosen, M Pfeiffer-Jensen
CrossFit is a fitness program that has become increasingly popular in the Western world, but as in other sports, the risk of injury is present. Only a few studies have addressed health benefits and injuries in CrossFit. It is known that chronically overloaded tendons will thicken and increase the risk of tendinopathy. However, it remains unknown whether acute overload caused by strenuous, high-intensity exercise will exert changes in tendons and if these changes can be detected and described by ultrasonography...
October 7, 2016: Scandinavian Journal of Medicine & Science in Sports
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