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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
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
https://www.readbyqxmd.com/read/27631016/an-epidemiological-profile-of-crossfit-athletes-in-brazil
#8
Jan W C Sprey, Thiago Ferreira, Marcos V de Lima, Aires Duarte, Pedro B Jorge, Claudio Santili
BACKGROUND: CrossFit is a conditioning and training program that has been gaining recognition and interest among the physically active population. Approximately 440 certified and registered CrossFit fitness centers and gyms exist in Brazil, with approximately 40,000 athletes. To date, there have been no epidemiological studies about the CrossFit athlete in Brazil. PURPOSE: To evaluate the profile, sports history, training routine, and presence of injuries among athletes of CrossFit...
August 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/27584238/examination-of-physiological-responses-during-crossfit-workouts-of-varying-duration-624-board-5-june-1-1-00-pm-3-00-pm
#9
Jake Frye, Katie Heinrich, Yuri Feito
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27578854/shoulder-injuries-in-individuals-who-participate-in-crossfit-training
#10
Ryan J Summitt, Ryan A Cotton, Adam C Kays, Emily J Slaven
BACKGROUND: CrossFit, a sport and fitness program, has become increasingly popular both nationally and internationally. Researchers have recently identified significant improvements in health and wellness due to CrossFit. However, some individuals assert that CrossFit poses an inherent risk of injury, specifically to the shoulder, due to the intensity of training. Currently, there is limited evidence to support this assertion. HYPOTHESIS: Exercises performed during CrossFit do not place the shoulder at greater risk for injury...
August 30, 2016: Sports Health
https://www.readbyqxmd.com/read/27556548/attentive-processes-blood-lactate-and-crossfit-%C3%A2
#11
Valentina Perciavalle, Nunzio Salvatore Marchetta, Salvatore Giustiniani, Carlo Borbone, Vincenzo Perciavalle, Maria Cristina Petralia, Andrea Buscemi, Marinella Coco
OBJECTIVES: To analyze the influences of blood lactate produced during a specific session of CrossFit® on intensity and selectivity of attention. The first was evaluated by measuring the reaction time and the second by analyzing divided attention with a dual task. METHODS: Fifteen male professionals of CrossFit® volunteered in the study. The training session was the Workout Of the Day (WOD) called 15.5, marked as: 27-21-15-9 repetitions (without recovery) in term of calories measured by using a rowing ergometer (e...
August 24, 2016: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/27553606/the-role-of-social-capital-and-community-belongingness-for-exercise-adherence-an-exploratory-study-of-the-crossfit-gym-model
#12
Jessica Whiteman-Sandland, Jemma Hawkins, Debbie Clayton
This is the first study to measure the 'sense of community' reportedly offered by the CrossFit gym model. A cross-sectional study adapted Social Capital and General Belongingness scales to compare perceptions of a CrossFit gym and a traditional gym. CrossFit gym members reported significantly higher levels of social capital (both bridging and bonding) and community belongingness compared with traditional gym members. However, regression analysis showed neither social capital, community belongingness, nor gym type was an independent predictor of gym attendance...
August 23, 2016: Journal of Health Psychology
https://www.readbyqxmd.com/read/27445850/two-consecutive-days-of-crossfit-training-affects-pro-and-anti-inflammatory-cytokines-and-osteoprotegerin-without-impairments-in-muscle-power
#13
Ramires A Tibana, Leonardo M de Almeida, Nuno M Frade de Sousa, Dahan da Cunha Nascimento, Ivo V de Sousa Neto, Jeeser A de Almeida, Vinicius C de Souza, Maria de Fátima T P L Lopes, Otávio de Tolêdo Nobrega, Denis C L Vieira, James W Navalta, Jonato Prestes
The aim of this study was to investigate the effects of two consecutive Crossfit® training sessions (24 h apart) designed to enhance work-capacity that involved both cardiovascular and muscular exercises on cytokines, muscle power, blood lactate and glucose. Nine male members of the CrossFit® community (age 26.7 ± 6.6 years; body mass 78.8 ± 13.2 kg; body fat 13.5 ± 6.2%; training experience 2.5 ± 1.2 years) completed two experimental protocols (24 h apart): (1) strength and power exercises, (2) gymnastic movements, and (3) metabolic conditioning as follows: 10 min of as many rounds as possible (AMRAP) of 30 double-unders and 15 power snatches (34 kg)...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27391615/is-high-intensity-functional-training-hift-crossfit-safe-for-military-fitness-training
#14
Walker S C Poston, Christopher K Haddock, Katie M Heinrich, Sara A Jahnke, Nattinee Jitnarin, David B Batchelor
High-intensity functional training (HIFT) is a promising fitness paradigm that gained popularity among military populations. Rather than biasing workouts toward maximizing fitness domains such as aerobic endurance, HIFT workouts are designed to promote general physical preparedness. HIFT programs have proliferated as a result of concerns about the relevance of traditional physical training (PT), which historically focused on aerobic condition via running. Other concerns about traditional PT include: (1) the relevance of service fitness tests given current combat demands, (2) the perception that military PT is geared toward passing service fitness tests, and (3) that training for combat requires more than just aerobic endurance...
July 2016: Military Medicine
https://www.readbyqxmd.com/read/27362047/examination-of-eating-disorder-risk-dietary-intake-and-body-composition-in-crossfit-athletes-3681-board-120-june-4-9-30-am-11-00-am
#15
Toni Marie Torres-McGehee, Cassandra Niemela, Justin Goins, Dawn M Emerson
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27361769/examination-of-recovery-and-dietary-needs-in-crossfit-athletes-3200-board-265-june-3-3-30-pm-5-00-pm
#16
Erik Bonn, Toni M Torres-McGehee, Justin Goins
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27361627/what-percentage-of-crossfit-workouts-are-interval-based-3058-board-123-june-3-2-00-pm-3-30-pm
#17
Victor Andrews
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27361616/survey-of-incidence-of-injuries-in-crossfit-training-3047-board-112-june-3-2-00-pm-3-30-pm
#18
Aaditya Verma, Alexandra Rivera Vega
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27361611/the-perceived-demands-of-crossfit%C3%A2-3042-board-107-june-3-2-00-pm-3-30-pm
#19
Bryanne Bellovary, Scott Drum, Randall Jensen, Maggy Moore
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27361159/neuroticism-and-gender-on-affect-and-feelings-during-and-after-a-crossfit-workout-2523-board-46-june-3-11-00-am-12-30-pm
#20
David A Tobar, Reed J Kaus, Bonnie G Berger
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
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