Functional disability and chronic knee pain are frequent in combats sports participants. The McKenzie Method of Mechanical Diagnosis and Therapy (MDT) is a system for specific function examination ...and intervention for spinal and extremity musculoskeletal disorder. This clinical trial aimed to investigate the effectiveness of MDT, through Directional Preference, for specific function disability in Brazilian Jiu-Jitsu practitioners (BJJPs) experiencing chronic non-specific knee pain.
Sixty-five BJJPs with chronic non-specific knee pain were evaluated and classified according to the MDT system. Following classification, 28 BJJPs were randomized pairwise into intervention (IG) and control (CG) groups. The procedures were consistent with the principles of DP and the intervention period was 6 weeks and follow up was included. The primary outcome was specific functional disability evaluated using the Patient Specific Function Scale (PSFS) and the secondary outcomes were pain intensity and fear-avoidance in utilizing the symptomatic limb. Data were analyzed with a two-way analysis of variance (ANOVA) and repeated measures for the outcome factor were performed (p < 0.05).
For the specific functional disability, ANOVA revealed significant differences between groups based on group interaction and treatment factors (F (2, 52): 162,015; p < 0.001; η2: 0.208). The BJJPs allocated to the IG achieved significant improvements in specific functional disability, a mean difference of −4.36 (−5.01 to −3.72) post-interventional and −4.80 (−6.07 to −3.53) follow-up in the PSFS. Improvements in pain intensity and fear-avoidance were also achieved post-intervention and follow-up.
Intervention in accordance with DP promoted resulted in favorable outcomes for clinical effects on specific functional disability pain intensity, and symmetry index of the lower limbs. These findings suggest that intervention based on DP may be effective in the management of chronic knee pain in BJJPs.
This article draws on ethnographic data from a Brazilian Jiu Jitsu gym to describe “social calibration” as ongoing interstitial work through which actors assess expectations of intensity and adjust ...their behaviors and dispositions accordingly. It explores two intensity breaches at the gym: “spazzing out” and not “being mean” enough. Using a microsociological lens, it analyses gym members' understandings of, and reactions to, these breaches. This study provides theoretical insight into micro‐interactional processes of social calibration used to negotiate and align intensity levels with prevailing norms, and shows how through these processes practitioners transgress or reinforce gendered expectations. A video is available at:
https://bit.ly/Burke2022.
INTRODUCTIONWith the advent of mixed martial arts (MMA) growing in popularity, there has been a described increase in its participation. The term MMA generally describes the hybridization of combat ...disciplines including but not limited to: karate, judo, jiu-jitsu, wrestling, taekwondo, boxing, kickboxing, and Muay Thai. With increased participation in MMA and martial arts, differing physical demands are placed on participants. Due to the physical nature of combat sports, there are injuries associated with participation. The purpose of this study is to report the incidence and characteristics of injuries seen from various martial art disciplines presenting to United States Emergency Rooms in order to educate participants and providers alike about risks assumed with participating in martial arts.METHODSThe National Electronic Injury Surveillance System (NEISS) database was queried for martial arts-related injuries from 2009 to 2019. Cases were examined and data including patient age and gender, injury type and location, hospital disposition, and type of martial arts practiced were extracted.RESULTSA total of 8,400 injuries were recorded, leading to a national estimate of 310,143 martial-arts related injuries over the 11 year period of 2009-2019 (95 % CI 239,063-381,223). The most common types of injuries were strains/sprains (n = 2664, 31.7 %), fractures (n = 1,575, 18.8 %), and contusions/abrasions (n = 1,698, 20.2 %). There were 260 dislocations, with shoulder dislocations being most common (n = 96, 36.9 %). Lower extremities were affected more frequently than upper extremities (n = 3566, 42.5 % versus n = 3026, 36.0 %), with the knee being the single most common location of injury (n = 811, 9.7 %). Males more commonly sustained fractures (19.7 % versus 17.4 %, p = 0.03) and dislocations (3.5 % versus 2.4 %, p = 0.01) when compared to females. Ankle injuries were more common in females than males (10.4 % versus 6.0 %, p < 0.001). Only 2.2 % of patients required admission to the hospital. Risk factors for admission included patients >35 years of age and male sex.CONCLUSIONMartial arts injuries are a significant source of musculoskeletal injuries among patients presenting to US emergency rooms. Lower extremity injuries are seen most frequently, with patients rarely requiring hospital admission. Using this information, both providers and participants may be better equipped to make educated decisions on injury prevention and treatment.
Aim: Compare the level of aggression of women and men training Brazilian Jiu-Jitsu (BJJ) with average aggression from a randomly selected control group and analyze the results in terms of therapeutic ...value. Material and methods: A group of 38 women and a group of 43 men practicing Brazilian Jiu-Jitsu were examined using the questionnaire to determine the level of aggression "Aggression Questionnaire" by Buss, Perry, the "Amity" Institute in the Polish adaptation. The collected data was compared with the results of women (35 people) and men (40 people) from the control group. Results: Lower levels of total aggression were observed among women and men training Brazilian Jiu-Jitsu relative to the control group. There was also a lower level of aggression in the group of women than in the group of men, and a decrease in the level of total aggression along with the increase in the training experience. Conclusions: The long-term training of Brazilian Jiu-Jitsu reduces the level of aggression. Training this sport can be one of the ways to reduce the level of aggression. Psychologists may recommend the training of Brazilian Jiu-Jitsu as a form of reducing aggression for people who are manifesting excessive and uncontrolled aggression in social relations.
Aim: Compare the level of aggression of women and men training Brazilian Jiu-Jitsu (BJJ) with average aggression from a randomly selected control group and analyze the results in terms of therapeutic ...value. Material and methods: A group of 38 women and a group of 43 men practicing Brazilian Jiu-Jitsu were examined using the questionnaire to determine the level of aggression "Aggression Questionnaire" by Buss, Perry, the "Amity" Institute in the Polish adaptation. The collected data was compared with the results of women (35 people) and men (40 people) from the control group. Results: Lower levels of total aggression were observed among women and men training Brazilian Jiu-Jitsu relative to the control group. There was also a lower level of aggression in the group of women than in the group of men, and a decrease in the level of total aggression along with the increase in the training experience. Conclusions: The long-term training of Brazilian Jiu-Jitsu reduces the level of aggression. Training this sport can be one of the ways to reduce the level of aggression. Psychologists may recommend the training of Brazilian Jiu-Jitsu as a form of reducing aggression for people who are manifesting excessive and uncontrolled aggression in social relations.
Brazilian Jiu‐Jitsu (BJJ) is a popular martial art that exposes participants to recurrent intermittent asphyxiation due to controlled application of neck chokes. To what extent the sport impacts the ...regulation of cerebral blood flow (CBF) and cognition has not been examined. This study compared eleven elite Brazilian Jiu‐Jitsu athletes (aged 30 ± 8 y) who trained 12 ± 6 hours/week for 8 ± 4 years against eleven cardiorespiratory fitness (CRF)‐ and age‐matched controls. Internal carotid (ICA) and vertebral artery (VA) blood flow were measured via duplex ultrasound to determine global cerebral blood flow (gCBF). Mild cognitive impairment and sub‐domains of memory, attention/concentration/visual motor coordination, and executive function were determined by psychometric testing. There was no evidence of mild cognitive impairment in the athletes, and cognitive function was comparable between groups (all p > 0.05). In contrast, resting gCBF was selectively elevated in the athletes (741 ± 186 mL∙min−1 vs. 573 ± 166 mL∙min−1, p = 0.037) due to combined differences in ICA (+65 mL∙min−1, p = 0.079) and VA (+19 mL∙min−1, p = 0.277) flow. In conclusion, the sustained elevation in resting cerebral perfusion provides preliminary evidence for adaptive neuroprotection that is independent of CRF and likely mediated by choke‐induced cerebral preconditioning and/or lifelong exposure to BJJ‐specific high‐intensity interval training.
Investigate the acute effects of repeated combat sports matches on vertical jump and handgrip strength performance in grappling and striking modalities.
Systematic review.
PubMed, Scopus, and Web of ...Science databases were searched. The following eligibility criteria for selecting studies were adopted: Population: Combat sports athletes; Intervention: Official or simulated matches; Comparator: Baseline versus after-matches performance; Outcome: Vertical jump and/or handgrip strength performance. PROSPERO: CRD42019129264
The systematic search resulted in 13 studies, including Brazilian jiu-jitsu, Greco-Roman, judo, taekwondo, and wrestling (freestyle and Greco-Roman) modalities, and a diverse number of repeated matches (i.e. 1–5). None of the studies adopted a randomized and controlled design and, consequently, none of them was classified as high quality. Brazilian jiu-jitsu and freestyle wrestling athletes presented an earlier onset of fatigue in upper and lower limbs, while judo and Greco Roman wrestling presented a later onset, from the third match. In taekwondo athletes, no fatigue was observed in the lower limbs, while handgrip strength decreased. However, studies have reported unclear data regarding the time-course of lower and upper limbs’ fatigue following repeated matches in taekwondo.
Both upper and lower limbs performance were affected after repeated matches in grappling combat sports when assessed by handgrip strength and vertical jump performance. In taekwondo, the studies have shown unclear results concerning the effects of repeated matches on upper and lower limb performance. There is a lack of studies classified as high-quality and investigations into the neuromuscular mechanisms underpinning fatigue after the repeated matches.
Aim: The comparision of the level of optimism and life satisfaction of men and women in the Brazilian ju-jitsu population, based on the average result of these characteristics of Polish society. ...Material and Methods: The group of 63 former and current paricipants being in training was exemined in Brsilian Ju-Jitsu (27 women and 36 men) and 76 being out of training participants from the minitoring group (38 women and 38 men) using the SWLS (Satisfaction with Life Scale) test to define the level of life satisfaction and the LOT-R (Life Orientation Test Revised) test to define the level of optimism. Results: There were significant differences in the level of optimism and life satisfaction among BJJ participants and those who did not practice any physical activity. The different responses of BJJ training to the "psyche" of men and women were also revealed as well as the little influence of sociological factors. Conclusions: The Brazilian Ju-Jitsu training significantly improves mental well-bing of a person. The sociological factors seem to have a minor effect on the state of "psyche" of BJJ paricipants.
Aim: The comparision of the level of optimism and life satisfaction of men and women in the Brazilian ju-jitsu population, based on the average result of these characteristics of Polish society. ...Material and Methods: The group of 63 former and current paricipants being in training was exemined in Brsilian Ju-Jitsu (27 women and 36 men) and 76 being out of training participants from the minitoring group (38 women and 38 men) using the SWLS (Satisfaction with Life Scale) test to define the level of life satisfaction and the LOT-R (Life Orientation Test Revised) test to define the level of optimism. Results: There were significant differences in the level of optimism and life satisfaction among BJJ participants and those who did not practice any physical activity. The different responses of BJJ training to the "psyche" of men and women were also revealed as well as the little influence of sociological factors. Conclusions: The Brazilian Ju-Jitsu training significantly improves mental well-bing of a person. The sociological factors seem to have a minor effect on the state of "psyche" of BJJ paricipants.
