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1.
East Mediterr Health J ; 26(2): 198-205, 2020 Feb 24.
Artigo em Inglês | MEDLINE | ID: mdl-32141598

RESUMO

Background: Adequate hand hygiene is considered the most effective measure to reduce transmission of nosocomial pathogens. Aims: To determine the effectiveness of infection control intervention to improve compliance with hand hygiene in the Emergency Department, Al-Leith General Hospital, Saudi Arabia, and evaluate bacterial load on hands as a possible indicator of improvement. Methods: The study consisted of 3 phases: Phase I, measurement of basal hand hygiene compliance level; Phase II, multimodal hand hygiene educational programme was initiated; and Phase III, hand hygiene compliance level was measured again. Data were collected by direct observation of healthcare workers in the emergency department between October 2016 and March 2017, using the standardized World Health Organization method for direct observation, "Five Moments for Hand Hygiene". The intervention comprised health education sessions using direct personal contact. Hands of healthcare workers were sampled during Phases I and III by sterile bag method, and bacterial load was determined. Results: A total of 1374 opportunities for hand hygiene were observed during the triphase study. Implementation of the interventional hand hygiene educational programme significantly improved compliance with hand hygiene guidelines from 30.7% to 45.5% (P < 0.01). Log10 bacterial load per hand dropped from 4.97 (standard deviation = 0.32) to 4.57 (0.47) (P < 0.05). Conclusions: Hand hygiene educational programmes were effective in improving compliance in the emergency department, and bacterial load on hands of healthcare workers could be used as an indicator of improvement in hand hygiene compliance.


Assuntos
Infecção Hospitalar/prevenção & controle , Higiene das Mãos , Mãos/microbiologia , Pessoal de Saúde , Controle de Infecções/métodos , Educação em Saúde , Hospitais , Humanos , Unidades de Terapia Intensiva/normas , Arábia Saudita
2.
Environ Monit Assess ; 192(3): 157, 2020 Feb 03.
Artigo em Inglês | MEDLINE | ID: mdl-32016621

RESUMO

Quantitatively characterizing dermal exposure for workers and consumers performing tasks with hand-applied cleaning solution is complex as many of the assessment variables are scenario specific. One of the key variables necessary for quantitatively estimating dermal exposure is the surface area of the hand contacted by the cleaning solution. However, no relevant data or methods are available in the literature. This study evaluated the feasibility of a novel simulation approach to measure skin contact area specific to hand cleaning with various types of liquid cleaning products to refine exposure and risk estimates for users of these products. This approach incorporates cotton rags wetted with pigmented cleaning solutions, volunteers wearing white cotton gloves during hand cleaning with those cotton rags, and digital imaging of the pigmented solution-contacted gloves post-simulation to quantify area of the hand contacted by the cleaning solution. When applied across three separate cleaning solutions, a denatured alcohol, an aqueous solution, and a lacquer thinner, this novel method performed well in estimating both palmer and dorsal surface areas of the hand contacted during simulated cleaning. The volume of cleaning solution applied to the rag and thickness of the rag were consistent predictors of contacted surface area. For the denatured alcohol, the time spent cleaning was additionally correlated with contacted surface area. This study suggests that this novel simulation approach could be an important tool for reducing an important source of uncertainty in dermal exposure assessments involving hand-applied cleaning solutions.


Assuntos
Detergentes , Monitoramento Ambiental , Exposição Ocupacional , Absorção Cutânea , Mãos , Humanos , Pele
3.
Medicine (Baltimore) ; 99(8): e19110, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-32080084

RESUMO

BACKGROUND: Cold hypersensitivity in the hands and feet (CHHF) is a common complaint in Asian female population especially in Korea. Due to the symptoms of CHHF the quality of individual's daily life can be degraded. Ucha-Shinki-Hwan (UCHA) is widely used in the treatment of various diseases including CHHF by harmonizing Yin and Yang, and improving the vitality of whole body. However, the efficacy of UCHA as a treatment option of CHHF has not been assessed in trials. Thus, we aimed to investigate the efficacy and safety of UCHA in Korean women with CHHF through this trial. METHODS: This study will be an exploratory, randomized, double-blind, placebo-controlled, parallel-group, multicenter trial. Korean women aged 19 to 59 years who complaint with CHHF will be enrolled from 5 university affiliated Korean medicine hospitals. A total of 164 subjects will be randomly assigned to a treatment group (UCHA) or a placebo group at a 1:1 ratio. The subjects will receive 2.5 g of either UCHA or placebo three times a day for 8 weeks. The primary outcome will be evaluated with the visual analog scale score of CHHF. The secondary outcome measures will be changes in skin temperature in extremities as measured by using a thermometer and the Korean version of the World Health Organization Quality of Life Scale Abbreviated Version. DISCUSSION: This study will be the first trial to explore the efficacy and safety of UCHA for CHHF patient. This will provide meaningful clinical information on herbal medicine treatment of CHHF and a clinical evidence for planning a full randomized clinical trial. DISCLOSURES AND ACKNOWLEDGMENTS: The authors report no competing interests. TRIAL REGISTRATION: This study is registered at ClinicalTrials.gov, ID: NCT03790033. Registered on (31 December 2018) PROTOCOL VERSION:: The final approved version of the trial protocol is V1.3. (25 January 2019).


Assuntos
Síndromes Periódicas Associadas à Criopirina/tratamento farmacológico , Síndromes Periódicas Associadas à Criopirina/epidemiologia , Medicina Herbária/métodos , Temperatura Cutânea/efeitos dos fármacos , Adulto , Síndromes Periódicas Associadas à Criopirina/psicologia , Método Duplo-Cego , Feminino , Pé/fisiopatologia , Mãos/fisiopatologia , Humanos , Medicina Tradicional Coreana/métodos , Pessoa de Meia-Idade , Fitoterapia/métodos , Placebos/administração & dosagem , Qualidade de Vida , República da Coreia/epidemiologia , Temperatura Cutânea/fisiologia , Escala Visual Analógica
4.
Orv Hetil ; 161(7): 263-268, 2020 Feb.
Artigo em Húngaro | MEDLINE | ID: mdl-32037868

RESUMO

Introduction: Osteoid osteoma is a rare benign bone tumor displaying typical clinical symptoms and radiological signs in most cases. Characteristic symptoms are nocturnal pain alleviated by non-steroid antiinflammatory drugs. Radiological findings are also characteristic, the central osteolytic 'nidus' is surrounded by reactive sclerosis. These lesions are rare in the hand, typical symptoms may be absent, furthermore, atypical symptoms may occur. Characteristic radiographic signs may also be missing. Therefore, diagnosis may prove difficult. In the case of radiological/clinical suspicion, HRCT (high-resolution CT) is recommended. Aim: Our aim is to summarize the pathophysiology, occurrence and clinical features of these lesions and also the difficulties that accompany diagnosis on the hand. Treatment options will also be discussed. Method: Retrospective analysis was performed at Semmelweis University, Department of Orthopedics, between March 2014 and December 2018. Inclusion criteria were: patients who had undergone treatment for osteoid osteoma during this period. Data from the 6 patients who have undergone open surgery for osteoid osteoma of the hand will be presented as case reports. Results: During this period, a total of 112 patients were treated for osteoid osteoma at our Department, 8 lesions were found on the hand (7%). Among the cases presenting on the hand, typical nocturnal pain was absent in 3 cases, and in 1 case the pain did not respond to non-steroid antiinflammatory drugs. Open surgery and curettage was performed in 6 cases with good results. Conclusion: Osteoid osteoma on the hand is rare, typical symptoms may be missing, and atypical symptoms may occur. Radiographic findings may be nondescript, HRCT is recommended in the case of clinical suspicion. Performing radiofrequency ablation for osteoid osteoma of the hand may pose difficulties, curettage is the gold standard of treatment. Curettage alleviates symptoms well. Orv Hetil. 2020; 161(7): 263-268.


Assuntos
Neoplasias Ósseas/diagnóstico por imagem , Neoplasias Ósseas/cirurgia , Mãos , Osteoma Osteoide/diagnóstico por imagem , Osteoma Osteoide/cirurgia , Humanos , Estudos Retrospectivos , Tomografia Computadorizada por Raios X
8.
PLoS One ; 15(1): e0218977, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-31978115

RESUMO

Tying the hands behind the back has detrimental effects on sensorimotor perceptual tasks. Here we provide evidence that beta band oscillatory activity in a resting state condition might play a crucial role in such detrimental effects. EEG activity at rest was measured from thirty young participants (mean age = 24.03) in two different body posture conditions. In one condition participants were required to keep their hands freely resting on the table. In the other condition, participants' hands were tied behind their back. Increased beta power was observed in the left inferior frontal gyrus during the tied hands condition compared to the free hands condition. A control experiment ruled out alternative explanations for observed change in beta power, including muscle tension. Our findings provide new insights on how body postural manipulations impact on perceptual tasks and brain activity.


Assuntos
Encéfalo/fisiologia , Fenômenos Fisiológicos Musculoesqueléticos , Equilíbrio Postural/fisiologia , Córtex Sensório-Motor/fisiologia , Adulto , Mapeamento Encefálico , Eletroencefalografia , Feminino , Mãos/fisiologia , Humanos , Masculino , Contração Muscular/fisiologia , Descanso/fisiologia , Couro Cabeludo/fisiologia , Visão Ocular/fisiologia , Adulto Jovem
9.
Plast Reconstr Surg ; 145(2): 471-481, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-31985644

RESUMO

BACKGROUND: Hand surgeons can alleviate the burden associated with various congenital anomalies, burn sequelae, and trauma that debilitate individuals in low- and middle-income countries. Because few surgeons in these areas have the necessary resources to perform complex hand surgery, surgical trips provide essential surgical care. The authors aimed to determine the economic benefit of hand surgical trips to low- and middle-income countries to comprehensively determine the economic implications of hand surgery trips in low-resource settings. METHODS: The authors collected data from two major global hand surgery organizations to analyze the economic benefit of hand surgery trips in low- and middle-income countries. The authors used both the human capital approach and the value of a statistical life-year approach to conduct this cost-benefit analysis. To demonstrate the economic gain, the authors subtracted the budgeted cost of each trip from the economic benefit. RESULTS: The authors analyzed a total of 15 trips to low- and middle-income countries. The costs of the trips ranged from $3453 to $87,434 (average, $24,869). The total cost for all the surgical trips was $373,040. The authors calculated a net economic benefit of $3,576,845 using the human capital approach and $8,650,745 using the value of a statistical life-year approach. CONCLUSIONS: The authors found a substantial return on investment using both the human capital approach and the value of a statistical life-year approach. In addition, the authors found that trips emphasizing education had a net economic benefit. Cost-benefit analyses have substantial financial implications and will aid policy makers in developing cost-reduction strategies to promote surgery in low- and middle-income countries.


Assuntos
Países em Desenvolvimento/economia , Deformidades Congênitas da Mão/economia , Traumatismos da Mão/economia , Mãos/cirurgia , Adolescente , Adulto , Idoso , Criança , Pré-Escolar , Análise Custo-Benefício , Assistência à Saúde/economia , Feminino , Deformidades Congênitas da Mão/cirurgia , Traumatismos da Mão/cirurgia , Humanos , Masculino , Turismo Médico/economia , Área Carente de Assistência Médica , Pessoa de Meia-Idade , Gravidez , Anos de Vida Ajustados por Qualidade de Vida , Estudos Retrospectivos , Viagem/economia , Viagem/estatística & dados numéricos , Adulto Jovem
11.
Mymensingh Med J ; 29(1): 169-176, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-31915354

RESUMO

This cross sectional analytical type of study was conducted at department of Anatomy, Dhaka Medical College, Dhaka, Bangladesh from July 2015 to June 2016 on 50 adult Bangladeshi male sprinters (Group A) and 50 adult Bangladeshi male cricket batsman (Group B). Sample collection was done by convenient purposive sampling technique. History of any injury of hand during playing was excluded to construct standard measurement. Hand breadth was measured with the help of slide calipers. Hand grip strength Dynamometer was used to measure the hand grip strength. Paired Student's 't' test, unpaired student's 't' test and Pearson's correlation coefficient test were done for statistical analysis of the result. The aim of the present study was to determine hand breadth and average hand grip strength of Bangladeshi male cricket batsman to find out correlation between them that may be used as a baseline for other professions as well for future research in our country. The mean right and left hand grip strength was significantly higher in the cricket batsman than in the sprinters. The mean right and left hand breadth was found to be significantly higher in the cricket batsman than in the sprinters. Right and left hand grip strength showed significant positive correlation with hand breadth in both hand. The study findings suggest that regular physical exercise and training increase hand grip strength.


Assuntos
Força da Mão , Mãos/anatomia & histologia , Adulto , Animais , Antropometria , Grupo com Ancestrais do Continente Asiático , Atletas , Bangladesh , Estudos Transversais , Grupos Étnicos , Humanos , Masculino , Dinamômetro de Força Muscular , Corrida
12.
Oper Orthop Traumatol ; 32(1): 23-28, 2020 Feb.
Artigo em Alemão | MEDLINE | ID: mdl-31897502

RESUMO

OBJECTIVE: Peripheral nerve blocks in hand surgery. INDICATIONS: Short operations on the hand. CONTRAINDICATIONS: Long operations, polyneuropathy, local anesthesia allergy. TECHNIQUE: Identification of landmarks, skin disinfection, local anesthesia injection, surgery. POSTOPERATIVE MANAGEMENT: Postoperative monitoring. RESULTS: We performed 75 hand surgeries using distal nerve blocks over 3 years (between 2015 and 2018) in our department. In all, 60% (n = 45) of cases belong to the innervation region of the median nerve, 28% of cases (n = 21) belong to the innervation area of the radial nerve and about 5% (n = 4) to the innervation area of the ulnar nerve. In 7% (n = 5) of cases, anesthesia of two neighboring innervation areas was necessary. The distal nerve block provides a reliable form of anesthesia in hand surgery with low complication rates.


Assuntos
Mãos , Bloqueio Nervoso , Mãos/inervação , Mãos/cirurgia , Humanos , Nervo Radial , Resultado do Tratamento , Nervo Ulnar
13.
Adv Clin Exp Med ; 29(1): 157-163, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-31990461

RESUMO

Palmoplantar pustulosis (PPP) is a chronic inflammatory disease, most often occurring in middle-aged women. In the course of the condition, painful skin lesions appear on the hands and feet, i.e., areas that are extremely important in everyday life. Therefore, the disease significantly reduces quality of life. The pathogenesis of this disease is poorly understood, although it is known that genetic, immunological and environmental factors play a role in its development. Clinical observations confirm the role of nicotine and contact allergens in the development of the lesions. The skin lesions can also occur as a side effect of certain medications. In some cases, PPP coexists with other diseases, i.e., seronegative arthropathies, as well as celiac and thyroid diseases. There is also a connection between the disease and infectious bacterial foci. Exacerbation of the skin lesions is triggered by stress. Therefore, patients require multidirectional tests, since finding the cause of the disease is essential to administering effective treatment.


Assuntos
Psoríase , Doenças da Glândula Tireoide , Doença Crônica , Feminino , Pé/patologia , Mãos/patologia , Humanos , Pessoa de Meia-Idade , Psoríase/complicações , Psoríase/diagnóstico , Psoríase/terapia , Qualidade de Vida , Doenças da Glândula Tireoide/complicações , Doenças da Glândula Tireoide/diagnóstico , Doenças da Glândula Tireoide/terapia
14.
Forensic Sci Int ; 307: 110115, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-31918164

RESUMO

INTRODUCTION: In a case of child pornography, only the dorsum of the offender's hand was clearly visible. After identification of a suspect, the question arose of whether and how it is possible to identify or exclude the suspect as perpetrator according to the morphology of the hand vein pattern. MATERIAL AND METHODS: A simple approach to use the hand vein pattern in crime suspects as a tool for identification was tested. In this study, the hand vein patterns of 30 study participants were analysed from conventional frames on videography. A standardised grid system consisting of six lines and four sectors was applied on the dorsum of the hands. Vein branchings within the sectors and line crossings of the veins were counted, leading to a total of 11 variables for each hand. RESULTS: A positive identification of each of the 30 test participants was possible for each hand when taking only the first five variables into account. A random overlapping prediction was obtained by statistically simulating hand vein patterns of different numbers of persons using this sample. Considering the hand vein frequencies in this sample, the results indicate that the chance for two persons having the same pattern is smaller than 1:1000. CONCLUSIONS: It can be concluded that the introduced grid system approach can be an appropriate simple and non-costly tool for the analysis of the pattern of hand veins for identification purposes.


Assuntos
Mãos/irrigação sanguínea , Processamento de Imagem Assistida por Computador , Reconhecimento Automatizado de Padrão , Veias/anatomia & histologia , Gravação em Vídeo , Adulto , Idoso , Criança , Bem-Estar da Criança/legislação & jurisprudência , Literatura Erótica/legislação & jurisprudência , Feminino , Ciências Forenses/métodos , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem
15.
Medicine (Baltimore) ; 99(4): e18849, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-31977883

RESUMO

BACKGROUND: Molecular targeted anticancer drugs such as multikinase inhibitors have shown obvious therapeutic advantages in a variety of tumors. The occurrence of hand-foot skin reaction (HFSR) is positively correlated with therapeutic effect, but it is also the most common cause of dose limiting toxicity for this treatment. This can lead to interruption or decrement of the treatment, a reduction in quality of life for patients, as well as potentially leading to secondary infections. As a result, the curative effect of targeted anticancer drugs will be negatively impacted. Currently, there is no certain and effective therapy. External use of Chinese herb medicine LC09 in the early treatment of HFSR has shown positive outcomes, but it is necessary to carry out further clinical research to confirm. OBJECTIVES: The purpose of this study was to investigate the efficacy and safety of topical soaks of Chinese herbal medicine LC09 for HFSR induced by molecular targeted anticancer drugs. METHODS: The trial is a prospective, randomized, controlled, double-blind, monocentric, and interventional study. A total of 66 patients with HFSR will be recruited and randomly assigned to receive either LC09 Granules or placebo. The primary outcomes are the assessment of HFSR grade and pain score. The secondary outcomes are the evaluation of the quality of life, incidence of targeted drug dosage reduction, and incidence of targeted drug withdrawal. DISCUSSION: This prospective, randomized clinical trial will provide valuable data regarding the efficacy and safety of topical soak treatments with LC09 granules for HFSR. Positive results would provide evidence-based complementary therapeutic approach future treatments of HFSR. TRIAL REGISTRATION: Chinese Clinical Trial Registry, http://www.chictr.org.cn, ChiCTR1900023679. Registered on 7 June 2019.


Assuntos
Antineoplásicos/efeitos adversos , Medicamentos de Ervas Chinesas/administração & dosagem , Dermatopatias/induzido quimicamente , Dermatopatias/tratamento farmacológico , Banhos , Método Duplo-Cego , , Mãos , Humanos , Estudos Prospectivos , Ensaios Clínicos Controlados Aleatórios como Assunto , Resultado do Tratamento
16.
J Sports Sci ; 38(5): 511-517, 2020 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-31902294

RESUMO

This study investigated the effects of a 4-week training with hand paddles (HPD) on front-crawl swimming performance (SP), clean swimming speed (SPEED), stroke rate (SR), stroke length (SL) and tethered force (TF). Twenty swimmers (10 men and 10 women) were paired according to performance and gender, and were randomly assigned to control (CON, 22.4 ± 2.3 years) or HPD (21.8 ± 1.9 years) groups. During 4 weeks both groups performed the same training, except for a sprint training set (3 times/week, 10 × 10 strokes all-out, 1-min rest) completed with (HPD = 320 cm2) and without (CON) paddles. Afterwards, both groups performed the same training over a 2-week taper period. SP, SPEED, SR, SL and TF were assessed before (PRE) and after the 4-week period (POST), after the first (T1) and second taper weeks (T2). Swimmers rated their perceived exertion for the sprint training set (RPETS) and the training session for determining internal training load (ITL). SP, SPEED, SR, SL and TF did not change from PRE to POST, T1 and T2. ITL and RPETS were not different between groups. Training 4 weeks with HPD does not affect swimming performance, so the use of HPD remains unsupported in such period.


Assuntos
Desempenho Atlético/fisiologia , Equipamentos Esportivos , Natação/fisiologia , Feminino , Mãos , Humanos , Masculino , Fatores de Tempo , Adulto Jovem
17.
Plast Reconstr Surg ; 145(2): 459-467, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-31985641

RESUMO

BACKGROUND: Injuries to the upper extremity lymphatic system from cancer may require measures to prevent secondary lymphedema. Guidelines were established relating to the use of tourniquet and elective hand and upper extremity surgery. However, reports in the setting of hand surgery have indicated that prior guidelines may not be protective to the patient. METHODS: The study systematically reviewed the current literature evaluating elective hand surgery in breast cancer patients. The authors evaluated the risk of complications, including new or worsening lymphedema and infection. RESULTS: One hundred ninety-eight abstracts were identified, and a bibliographic review was performed. Nine studies pertained to our subject, and four were included for final review. All studies included patients with prior breast cancer treatment involving breast surgery and axillary lymph node dissection. Pneumatic tourniquets were used during nearly all operations. Patients without presurgery ipsilateral lymphedema had a 2.7 percent incidence of developing new lymphedema and a 0.7 percent rate of postoperative infection. Patients with presurgery lymphedema had a 11.1 percent incidence of worsening lymphedema and a 16.7 percent rate of infection. However, all cases of new or exacerbated lymphedema resolved within 3 months. Tourniquet use was not found to increase rates of lymphedema. CONCLUSIONS: Based on the available evidence, there is no increased risk of complications for elective hand surgery in patients with prior breast cancer treatment. Breast cancer patients with preexisting ipsilateral lymphedema carry slightly increased risk of postoperative infection and worsening lymphedema. It is the authors' opinion and recommendation that elective hand surgery with a tourniquet is not a contradiction in patients who have received previous breast cancer treatments.


Assuntos
Neoplasias da Mama/cirurgia , Mãos/cirurgia , Linfedema/cirurgia , Neoplasias da Mama/complicações , Neoplasias da Mama/radioterapia , Síndrome do Túnel Carpal/etiologia , Síndrome do Túnel Carpal/cirurgia , Procedimentos Cirúrgicos Eletivos/estatística & dados numéricos , Feminino , Humanos , Excisão de Linfonodo/efeitos adversos , Excisão de Linfonodo/métodos , Linfedema/complicações , Mastectomia/efeitos adversos , Mastectomia/métodos , Segurança do Paciente , Complicações Pós-Operatórias/etiologia , Estudos Retrospectivos , Cirurgia de Second-Look/estatística & dados numéricos , Biópsia de Linfonodo Sentinela/efeitos adversos , Biópsia de Linfonodo Sentinela/métodos , Infecção da Ferida Cirúrgica/etiologia , Torniquetes , Resultado do Tratamento
18.
Schmerz ; 34(1): 79-83, 2020 Feb.
Artigo em Alemão | MEDLINE | ID: mdl-31741064

RESUMO

This article describes the case of a female patient with symptoms of complex regional pain syndrome (CRPS) of the right wrist and forearm. Ergotherapy of the affected hand (unilateral desensitization) showed little success and became impossible with increasing environmental temperature due to excessive pain. A physiological feedback via simultaneous treatment of the unaffected healthy arm (bilateral treatment approach) ultimately led to a clear decline of all CRPS symptoms.


Assuntos
Biorretroalimentação Psicológica , Síndromes da Dor Regional Complexa , Hiperalgesia , Síndromes da Dor Regional Complexa/terapia , Feminino , Mãos , Humanos , Hiperalgesia/terapia , Dor
19.
Orthopade ; 49(1): 66-69, 2020 Jan.
Artigo em Alemão | MEDLINE | ID: mdl-31363795

RESUMO

Malignancy occurs more often in multiple enchondromas than in solitary enchondromas. In the hands the rate is about 14%. We amputated the third ray of the hand in a young man with recurrence of an enchondroma. The histology showed a low grade chondrosarcoma. The patient had no tumour recurrence or metastasis in the following 5 years. We describe the evaluation as well as the treatment and outline the literature.


Assuntos
Neoplasias Ósseas , Condroma , Condrossarcoma , Encondromatose , Mãos , Humanos , Masculino , Recidiva Local de Neoplasia
20.
J Sports Sci ; 38(1): 46-52, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-31658889

RESUMO

The purpose of this study was to determine the influence of pelvis and torso angular jerk on a performance indicator of hitting, specifically hand velocity. Eighteen softball athletes were analysed (20.3 ± 1.6 years; 164.9 ± 24.9 cm; 74.4 ± 14.0 kg). Participants were instructed to execute 3 maximum effort swings off a stationary tee at the middle "strike-zone" location. Angular jerk data were analysed during the acceleration phase of the swing, the time between foot contact and ball contact. Quadratic regression analyses were conducted to examine the relationship of minimal pelvis angular jerk and minimal torso angular jerk to angular hand velocity at ball contact. No significant relationship was found between pelvis angular jerk and angular hand velocity at ball contact (r = 0.192, p = 0.754). The curvilinear regression model for pelvis angular jerk produced: R2 = 0.037; F (2, 17) = 0.288; p = 0.754. Lack of significant findings suggests a relationship between jerk and angular hand velocity does not exist within female softball hitting. Future research should investigate the timing of minimal jerk through the acceleration phase as a predictor of angular hand velocity, rather than the value of jerk itself.


Assuntos
Desempenho Atlético/fisiologia , Beisebol/fisiologia , Mãos/fisiologia , Pelve/fisiologia , Tronco/fisiologia , Aceleração , Fenômenos Biomecânicos , Feminino , Humanos , Destreza Motora/fisiologia , Movimento/fisiologia , Estudos de Tempo e Movimento , Adulto Jovem
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