scholarly journals Assessing the Effects of Kata and Kumite Techniques on Physical Performance in Elite Karatekas

Sensors ◽  
2020 ◽  
Vol 20 (11) ◽  
pp. 3186
Author(s):  
Luca Molinaro ◽  
Juri Taborri ◽  
Massimo Montecchiani ◽  
Stefano Rossi
Keyword(s):  
Ankle Joint ◽  
Physical Performance ◽  
Healthy Subjects ◽  
Motor Performance ◽  
Inertial Sensor ◽  
Sensor System ◽  
Joint Mobility ◽  
Squat Jump

This study aimed at assessing physical performance of elite karatekas and non-karatekas. More specifically, effects of kumite and kata technique on joint mobility, body stability, and jumping ability were assessed by enrolling twenty-four karatekas and by comparing the results with 18 non-karatekas healthy subjects. Sensor system was composed by a single inertial sensor and optical bars. Karatekas are generally characterized by better motor performance with respect non-karatekas, considering all the examined factors, i.e., mobility, stability, and jumping. In addition, the two techniques lead to a differentiation in joint mobility; in particular, kumite athletes are characterized by a greater shoulder extension and, in general, by a greater value of preferred velocity to perform joint movements. Conversely, kata athletes are characterized by a greater mobility of the ankle joint. By focusing on jumping skills, kata technique leads to an increase of the concentric phase when performing squat jump. Finally, kata athletes showed better stability in closed eyes condition. The outcomes reported here can be useful for optimizing coaching programs for both beginners and karatekas based on the specific selected technique.

scholarly journals Finger and foot tapping sensor system for objective motor assessment

2018 ◽  
Vol 75 (1) ◽  
pp. 68-77 ◽  
Author(s):  
Milica Djuric-Jovicic ◽  
Nenad Jovicic ◽  
Sasa Radovanovic ◽  
Milica Jecmenica-Lukic ◽  
Minja Belic ◽  
...  
Keyword(s):  
Healthy Subjects ◽  
Motor Performance ◽  
Graphical Representation ◽  
Inertial Sensors ◽  
Inertial Sensor ◽  
Quantitative Estimation ◽  
Objective Assessment ◽  
Force Sensor ◽  
Neurological Patient ◽  
Foot Tapping

Background/Aim. Finger tapping test is commonly used in neurological examinations as a test of motor performance. The new system comprising inertial and force sensors and custom proprietary software was developed for quantitative estimation and assessment of finger and foot tapping tests. The aim of this system was to provide diagnosis support and objective assessment of motor function. Methods. Miniature inertial sensors were placed on fingertips and used for measuring finger movements. A force sensor was placed on the fingertip of one finger, in order to measure the force during tapping. For foot tapping assessment, an inertial sensor was mounted on the subject?s foot, which was placed above a force platform. By using this system, various parameters such as a number of taps, tapping duration, rhythm, open and close speed, the applied force and tapping angle, can be extracted for detailed analysis of a patient?s motor performance. The system was tested on 13 patients with Parkinson?s disease and 14 healthy controls. Results. The system allowed easy measurement of listed parameters, and additional graphical representation showed quantitative differences in these parameters between neurological patient and healthy subjects. Conclusion. The novel system for finger and foot tapping test is compact, simple to use and efficiently collects patient data. Parameters measured in patients can be compared to those measured in healthy subjects, or among groups of patients, or used to monitor progress of the disease, or therapy effects. Created data and scores could be used together with the scores from clinical tests, providing the possibility for better insight into the diagnosis.

scholarly journals Physical and functional performance assessment in pediatric oncology: a systematic review

2021 ◽  
Author(s):  
Regine Söntgerath ◽  
Julia Däggelmann ◽  
Sabine V. Kesting ◽  
Corina S. Rueegg ◽  
Torge-Christian Wittke ◽  
...  
Keyword(s):  
Systematic Review ◽  
Muscle Strength ◽  
Physical Performance ◽  
Cardiorespiratory Fitness ◽  
Pediatric Cancer ◽  
Motor Performance ◽  
Performance Test ◽  
Functional Mobility ◽  
Cancer Type ◽  
And Function

Abstract Background Research indicates reduced physical performance from diagnosis into survivorship of pediatric cancer patients. However, there is no systematic information or guideline available on the methods to assess physical performance and function in this population. The purpose was to systematically compile and describe assessments of physical performance and function in patients and survivors of pediatric cancer, including cardiorespiratory fitness, muscle strength, speed, balance, flexibility, functional mobility, gait and motor performance test batteries. Methods We searched the databases PubMed, SPORTDiscus, and Cochrane Database and performed abstract and full-text selection of 2619 articles according to the Cochrane Handbook of Systematic Reviews. Information on patients characteristics, assessments, information on validity and reliability, and relevant references was extracted. Results In summary, 63 different assessments were found in 149 studies including 11639 participants. Most studies evaluated cardiorespiratory fitness and muscle strength with the majority conducted off treatment. Some outcomes (e.g. speed) and diagnoses (e.g. neuroblastoma) were severely underrepresented. With the exception of gait, leukemia patients represented the largest group of individuals tested. Conclusions Insufficient data and patient heterogeneity complicate uniform recommendations for assessments. Our results support researchers and practitioners in selecting appropriate assessment to meet their specific research questions or individual daily practice needs. Impact This systematic review includes 149 studies and provides a comprehensive summary of 63 assessments to evaluate cardiorespiratory fitness, muscle strength, speed, balance, flexibility, functional mobility, gait or motor performance test batteries in patients and survivors of pediatric cancer. We present the most studied fields within the pediatric cancer population, which are cardiorespiratory fitness and muscle strength, off treatment phase, and leukemia patients. We propose research priorities by identification of subgroups in terms of cancer type, phase of treatment, and outcome of interest that are underrepresented in studies currently available.

Hip, Knee and Ankle Joint Power in Three Weighted Squat Jump Techniques

2017 ◽  
Vol 49 (5S) ◽  
pp. 127
Author(s):  
Jason Morgan ◽  
Luke Hileman ◽  
Sophia Pollalis ◽  
Andrew Maeda ◽  
Adam Jagodinsky ◽  
...  
Keyword(s):  
Ankle Joint ◽  
Joint Power ◽  
Squat Jump

Comparison of an inertial sensor system of lameness quantification with subjective lameness evaluation

2012 ◽  
Vol 44 (6) ◽  
pp. 652-656 ◽  
Author(s):  
M. J. McCracken ◽  
J. Kramer ◽  
K. G. Keegan ◽  
M. Lopes ◽  
D. A. Wilson ◽  
...  
Keyword(s):  
Inertial Sensor ◽  
Sensor System

scholarly journals Effects of Short-Term Plyometric Training on Agility, Jump and Repeated Sprint Performance in Female Soccer Players

2021 ◽  
Vol 18 (5) ◽  
pp. 2274
Author(s):  
Marcin Maciejczyk ◽  
Renata Błyszczuk ◽  
Aleksander Drwal ◽  
Beata Nowak ◽  
Marek Strzała
Keyword(s):  
Physical Performance ◽  
Sprint Performance ◽  
Soccer Players ◽  
Plyometric Training ◽  
Countermovement Jump ◽  
Short Term ◽  
Jump Performance ◽  
Squat Jump ◽  
Repeated Sprint ◽  
Before And After

The aim of the study was to determine the effects of short-term (4 weeks, twice a week: 8 sessions) plyometric training on agility, jump, and repeated sprint performance in female soccer players. The study comprised 17 females performing this sports discipline. The players were randomly divided into two groups: with plyometric training (PLY) and the control (CON). All players followed the same training program, but the PLY group also performed plyometric exercises. Tests used to evaluate physical performance were carried out immediately before and after PLY. After implementing the short PLY training, significant improvement in jump performance (squat jump: p = 0.04, ES = 0.48, countermovement jump: p = 0.009, ES = 0.42) and agility (p = 0.003, ES = 0.7) was noted in the PLY group. In the CON group, no significant (p > 0.05) changes in physical performance were observed. In contrast, PLY did not improve repeated sprint performance (p > 0.05) among female soccer players. In our research, it was shown that PLY can also be effective when performed for only 4 weeks instead of the 6–12 weeks typically applied.

Modulation of Exercise-Induced Hypoalgesia Following an Exercise Intervention in Healthy Subjects

Pain Medicine ◽  
2020 ◽  
Vol 21 (12) ◽  
pp. 3556-3566
Author(s):  
Simon Hansen ◽  
Rasmus Christiansen Dalgaard ◽  
Pernille Schlosser Mikkelsen ◽  
Mathias Brandhøj Sørensen ◽  
Kristian Kjær Petersen
Keyword(s):  
Physical Performance ◽  
Healthy Subjects ◽  
Exercise Intervention ◽  
Military Training ◽  
Pressure Pain Threshold ◽  
Pain Mechanisms ◽  
Performance Capacity ◽  
Physical Performance Capacity ◽  
Exercise Induced ◽  
Chronic Pain Conditions

Abstract Background Exercise is recommended to promote and maintain health and as treatment for more than 25 diseases and pain conditions. Exercise-induced hypoalgesia (EIH), a measure of descending pain inhibitory control, has been found to be impaired in some chronic pain conditions, but it is currently unclear if EIH is modifiable. This study investigated whether a long-term exercise intervention could modulate EIH in healthy subjects. Methods In 38 healthy subjects, EIH was assessed as change in pressure pain threshold (PPT) after a three-minute isometric wall squat within the first week and after approximately seven weeks of military training (MT). Further, temporal summation of pain (TSP) and Knee injury and Osteoarthritis Outcome Score (KOOS) were assessed. Physical performance capacity was assessed using the Endurance 20-m shuttle run fitness test (20MSR). Hypoalgesic (EIH > 0.0 kPa) and hyperalgesic (EIH ≤ 0.0 kPa) subgroups were defined based on baseline EIH. Change in EIH following MT was used as the primary outcome. Results Increased EIH (P = 0.008), PPT (P < 0.003), and 20MSR (P < 0.001) were found following MT, with no changes in TSP and KOOS (P > 0.05). Subjects with a hyperalgesic EIH response at baseline (26% of the participants) presented significantly improved EIH following MT (P = 0.010). Finally, an association between 20MRS change and EIH change was found (r = 0.369, P = 0.023). Conclusions MT increased EIH, especially in subjects who demonstrated a hyperalgesic response at baseline. Improvement in physical performance capacity was associated with an improvement in EIH, indicating that improvement in physical performance capacity may improve central pain mechanisms.

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