CHEN Rixin's clinical experience of heat-sensitive moxibustion for Wenyang Yangshen in treatment of insomnia of yang deficiency. / 陈日新热敏灸"æ¸©é˜³å »ç¥ž"æ²»ç–—é˜³è™šå¤±çœ ç—‡ä¸´åºŠç»éªŒæ’·è.

The paper introduces CHEN Rixin's experience and ideas of heat-sensitive moxibustion for Wenyang Yangshen (warming-up yang and nourishing the spirit) in treatment of insomnia of yang deficiency. This type of insomnia is caused by yang insufficiency of the body and malnutrition of the spirit. The treatment focuses on Wenyang Yangshen. Replenishing yang (Shenque [CV 8], Qihai [CV 6] and Guanyuan [CV 4]) is combined with promoting yang circulation (Taiyang [EX-HN 5]). The acupoint combination is optimized through identifying the heat sensitivity. Sparrow-pecking moxibustion and mild moxibustion are used to control the appropriate moxibustion temperature, efficiently stimulate deqi and individually saturate the dose of moxibustion so as to target the principle of treatment and improve the sleep quality.

Examining the Influence of Warm-Up Static and Dynamic Stretching, as well as Post-Activation Potentiation Effects, on the Acute Enhancement of Gymnastic Performance: A Systematic Review with Meta-Analysis.

The primary objective of this systematic review with meta-analysis is to methodically discern and compare the impact of diverse warm-up strategies, including both static and dynamic stretching, as well as post-activation potentiation techniques, on the immediate performance of gymnasts. Adhering to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, this paper evaluated studies that examined the gymnasts' performance after different warm-up strategies namely stretching (static [SS] or dynamic), vibration platforms (VP) or post-activation, in comparison to control conditions (e.g., mixed warm-up routines; no warm-up). The principal outcomes were centered on technical performance metrics (e.g., split, gymnastic jumps) and physical performance metrics (e.g., squat jump, countermovement jump, drop jump, balance, range of motion). Methodological assessments of the included studies were conducted using the Downs and Black Checklist. From the initial search across PubMed, Scopus, and the Web of Science databases, a total of 591 titles were retrieved, and 19 articles were ultimately incorporated in the analysis. The results revealed a non-significant differences (p > 0.05) between the SS condition and control conditions in squat jump performance, countermovement jump and gymnastic technical performance (e.g., split; split jump). Despite the difference in warm-up strategies and outcomes analyzed, the results suggest that there is no significant impairment of lower-limb power after SS. Additionally, technical elements dependent on flexibility appear to be enhanced by SS. Conversely, dynamic stretching and VP seem to be more effective for augmenting power-related and dynamic performance in gymnasts.

The effectiveness of a golf injury prevention program (GRIPP intervention) compared to the usual warm-up in Dutch golfers: protocol design of a randomized controlled trial.

BACKGROUND: Sixty million golfers around the world play golf. Golf injuries are most frequently located in the spine, elbow, wrist, hand and shoulder. Those injuries are often seen in golfers with more playing hours and suboptimal swing biomechanics, resulting in overuse injuries. Golfers who do not perform a warm-up or do not warm-up appropriately are more likely to report an injury than those who do. There are several ways to warm-up. It is unclear, which warm-up is most useful for a golfer to perform. Moreover, there is currently no evidence for the effectiveness of a warm-up program for golf injury prevention. We previously have developed the Golf Related Injury Prevention Program (GRIPP) intervention using the Knowledge Transfer Scheme (KTS). We aim to evaluate the effect of the GRIPP intervention on golf-related injuries. The hypothesis is that the GRIPP intervention program will reduce the number of golf-related injuries. METHODS AND DESIGN: The GRIPP study is a two-armed randomized controlled trial. Twenty-eight golf clubs with 11 golfers per club will be randomly allocated to the intervention or control group. The intervention group will perform the GRIPP intervention program, and the control group will perform their warm-up as usual. The GRIPP intervention is conducted with the Knowledge Transfer Scheme framework, which is a systematic process to develop an intervention. The intervention consists of 6 exercises with a maximum total of 10 min. The primary outcome is the overall prevalence (%) of golf injuries measured with the Oslo Sports Trauma Research Center (OSTRC-H) questions on health problems every fortnight. The secondary outcome measures will be exposure to golf and compliance to the intervention program. DISCUSSION: In other sports warm-up prevention programs are effective in reducing the risk of injuries. There are no randomized trials on golf injury prevention. Therefore, an individual unsupervised golf athlete intervention program is conducted which reflects the daily practice of predominantly unsupervised exposure of amateur golfers. TRIAL REGISTRATION: The trial is retrospectively (28 October 2021) registered at the Dutch Trial Register: NL9847 ( https://trialsearch.who.int ).

Psicoterapia psicodramática de grupo on-line: reinvenções do aquecimento / Psicoterapia psicodramatica de grupo on-line: reinvenciones del calentamiento / Online group psychodramatic psychotherapy: warming-up reinventions

RESUMO Este trabalho tem por objetivo discutir práticas de psicoterapia psicodramática de grupo on-line com ênfase no Aquecimento. A hipótese é que o Aquecimento elaborado especificamente para o atendimento on-line contribui para o alcance de um estado grupal mais espontâneo. O norte teórico deste trabalho consiste nas etapas de Aquecimento propostas por Davoli (1999) através da experiência com teatro Espontâneo. Assim, discute-se cada etapa a partir do relato de algumas experiências na condução de um grupo de psicoterapia on-line. A partir dessas experiências, conclui-se, então, que o Aquecimento concebido para esse contexto específico proporciona resultados satisfatórios em termos de espontaneidade grupal.

RESUMEN Este artículo tiene como objetivo discutir las prácticas de psicoterapia psicodramatica grupal on-line con énfasis en el calentamiento. La hipótesis es que el calentamiento diseñado específicamente para la atención en línea contribuye al logro de un estado grupal más espontáneo. El norte teórico de la obra son las etapas de calentamiento propuestas por Davoli (1999) a partir de la experiencia con el teatro Spontâneo. Así, cada etapa se discute teniendo en cuenta el relato de algunas experiencias en la realización de un grupo de psicoterapia on-line. A partir de estas experiencias, afirmamos que el calentamiento diseñado para este contexto específico brinda buenos resultados en términos de espontaneidad grupal.

ABSTRACT This paper aims to discuss online group psychodramatic psychotherapy practices with an emphasis on warm-up. The hypothesis is that the warm-up step, specifically designed for Online care, contributes to the achievement of a more spontaneous group state. The theoretical north of the work is the warm-up stages proposed by Davoli (1999) from the experience with Spontaneous Theater. Thus, each stage is discussed taking into account the report of some experiences in conducting an online psychotherapy group. From these experiences, we affirm that the warm-up designed for this specific context provides good results in terms of group spontaneity.

Descriptive electromyography signals analysis of equine longissimus dorsi, rectus abdominis and gluteus medius muscles during maneuvers used to activate the core / [Análise descritiva do sinal eletromiográfico dos músculos longuíssimo dorsal, reto abdominal e glúteo médio de equinos durante a realização de manobras utilizadas para ativação do core]

Maneuvers to activate the equine's core can make a difference in their physical and psychic health. Although these activities are recommended and practiced, there is little research proving their effectiveness. This article aims to describe, through surface electromyography, the occurrences, durations and sequences activity of longissimus dorsi, rectus abdominis and gluteus medius during thoracolumbar flexion (TLF), lumbar and lumbosacral flexion (LLSF), global flexion (GF), which is the combination of TLF and LLSF, and tail traction (TT). Seven healthy adult horses of three different breeds performed five repetitions of these movements for five seconds (sec). Electromyographic activity was captured with non-invasive superficial sensors positioned in the skin regions covering these muscles. The sequence was performed once per animal, muscle activity captured by surface electromyography, data from two replicates of each animal were selected, analyzed on matLab software and data tabulation were described during each maneuver. These maneuvers provoked punctual and transient activation of muscles mentioned above, confirming the ability to activate equine core muscles. However, responses were not standardized, which means there were variations of occurrence, duration and sequence, suggesting that for practical application of those maneuvers it is necessary to perform more repetitions with longer durations to activate more muscles.(AU)

Manobras para ativação da musculatura do core equino podem ser diferenciais para saúde física e psíquica dos animais, sendo recomendadas e praticadas, mas existem poucas pesquisas comprovando a eficácia delas. Este artigo tem como objetivo descrever, por meio da eletromiografia de superfície, as ocorrências, as durações e as sequências temporais da atividade muscular do longuíssimo dorsal, do reto abdominal e do glúteo médio durante a realização das manobras de flexão toracolombar, flexão lombar e lombossacra, flexão global (toracolombar e lombossacra) e tração de cauda. Para isso, sete equinos adultos e hígidos de três raças realizaram esses quatro movimentos clássicos para ativar o core equino, com cinco repetições e manutenção do estímulo reflexivo por cinco segundos. Durante a realização, a atividade eletromiográfica foi capturada com a utilização de sensores superficiais posicionados de forma não invasiva em regiões cutâneas referentes a cada músculo. O protocolo completo de manobras foi realizado uma vez por cada animal enquanto a atividade muscular era capturada. Posteriormente, duas repetições de cada animal foram triadas e submetidas ao software matLab para análise. Com base na tabulação dos dados, foram descritas as variáveis eletromiográficas de presença ou ausência de ativação muscular, a duração média dos picos eletromiográficos superiores ao RMS (root mean square) e a sequência da atividade muscular observada durante cada manobra. Essas manobras provocaram ativações pontuais e transitórias nos três músculos, o que confirma a capacidade de excitar músculos do core equino. Contudo, as respostas não foram padronizadas, sugerindo que, na prática dessa atividade, devem-se realizar mais repetições com durações superiores a cinco segundos, a fim de se buscarem maiores ativações.(AU)

Warm-Ups and Coaches' Perceptions: Searching for Clues to Improve Injury Prevention in Youth Basketball.

Introduction: Regular use of neuromuscular training (NMT) warm-up programs improves performance and prevents injuries. However, low level of adoption of these programs remains a problem. Understanding the current warm-ups in youth basketball and coaches' perceptions on injury prevention can guide the design of superior implementation strategies. This study describes warm-ups in youth basketball and coaches' injury prevention-related knowledge, attitudes, beliefs, and information sources. Methods: Youth basketball coaches (n = 50) completed a preseason questionnaire. The questionnaire covered warm-up length, use of aerobic/agility/balance/strength/other exercises in the warm-up, injury-related knowledge, attitudes, beliefs, and sources of information. Results: Typical warm-up duration was ≤ 10 min (48.0% of coaches, 95% CI: ±13.8%). All coaches included aerobic exercises in their warm-up. Agility, strength, and balance exercises were utilized by 80.0% (95% CI: ±11.7%), 70.7% (95% CI: ±13.6%), and 26.8% (95% CI: ±13.6%) of coaches, respectively. Most coaches agreed to some extent that basketball injuries are preventable (94%) and that participating in a NMT warm-up program would reduce player's risk of injury (92%). Other coaches were identified as the most common source of information on warm-ups and injury prevention. Discussion: Coaches use parts of effective NMT warm-up programs, but balance exercises are not well adopted. Considering the level of evidence supporting the importance of balance exercises in injury prevention, it is crucial to improve the implementation of NMT warm-up programs in youth basketball, for example, through educational courses. As fellow coaches were identified as the most important source of information, coaches' role in knowledge translation should be emphasized.

Can sustained attention adapt to prior cognitive effort? An evidence from experimental study.

According to the limited resources paradigm, prior cognitive effort should result in a temporary depletion of available cognitive resources (Kahneman, 1973). Some recent evidence however has proved an opposite effect of increment in the availability of cognitive resources as a function of prior cognitive effort. In the current study the follow-up effect of cognitive effort on sustained attention was examined. Eighty-nine participants took part in the experiment. The cognitive load was manipulated between subjects using three versions of the DIVA Task (intensive warming-up condition, moderate warming-up condition and the control one). Following the experimental manipulation, the availability of cognitive resources during vigilance task was checked. Some significant effects of experimental manipulation were observed. First, in the context of overall task performance, subjects from the intensive warming-up condition obtained lower total errors rate than subjects from the control one. Some moderate effect of cognitive warming-up on time-on-task performance was also observed, although it was isolated to false alarms rate. Those results, tentatively suggesting the occurrence of the cognitive warming-up effect in vigilance performance, are then discussed. PSYCINFO CLASSIFICATION CATEGORIES AND CODES: 2300 Human Experimental Psychology: 2346 Attention.

Acute effects of inspiratory muscle warm-up on pulmonary function in healthy subjects.

The acute effects of inspiratory muscle warm-up on pulmonary functions were examined in 26 healthy male subjects using the pulmonary function test (PFT) in three different trials. The control trial (CON) did not involve inspiratory muscle warm-up, while the placebo (IMWp) and experimental (IMW) trials involved inspiratory muscle warm-up. There were no significant changes between the IMWp and CON trials (p>0.05). All the PFT measurements, including slow vital capacity, inspiratory vital capacity, forced vital capacity, forced expiratory volume in one second, maximal voluntary ventilation, and maximal inspiratory pressure were significantly increased by 3.55%, 12.52%, 5.00%, 2.75%, 2.66%, and 7.03% respectively, in the subjects in the IMW trial than those in the CON trial (p<0.05). These results show that inspiratory muscle warm-up improved the pulmonary functions. The mechanisms responsible for these improvements are probably associated with the concomitant increase in the inspiratory muscle strength, and the cooperation of the upper thorax, neck, and respiratory muscles, and increased level of reactive O2 species in muscle tissue, and potentially improvement of muscle O2 delivery-to-utilization. However, further investigation is required to determine the precise mechanisms responsible from among these candidates.

A importância do acolhimento e do aquecimento em grupos sem demanda no contexto da Justiça / The importance of welcoming and warming up in groups without spontaneous demand in the context of Justice / La importancia de la acogida y del caldeamiento en grupos de hombres sin demanda en el contexto del sistema de Justicia

Este artigo apresenta aspectos da experiência de atendimento aos grupos de homens envolvidos em violência doméstica. Abordou-se parte dos resultados obtidos em quatro anos de intervenção socioterapêutica no contexto da Justiça. Foram ressaltados o aquecimento e o acolhimento nas etapas da sessão, no atendimento socioterapêutico e no processo grupal. Elegemos a metodologia psicodramática e o método de pesquisa-em-intervenção, realizando a análise compreensiva do vivido em cada grupo e a análise comparativa entre eles. Concluímos que nesses grupos, sobretudo os envolvidos em violência contra a mulher, o acolhimento e o aquecimento desempenham uma função importante no desenvolvimento de uma intervenção que favoreça o protagonismo dos sujeitos e o resgate da espontaneidade e adequação nas situações da própria vida.

This article presents aspects of the experience of counselling with groups of men involved in domestic violence. It addressed part of the results obtained during four years of social therapeutic intervention within the Justice system. Emphasis is placed on the welcoming and the warming up stages of the session, in the social therapeutic counselling and in the group process. The methodology used is psychodrama and the research-through-intervention method using comprehensive analysis of the life experiences of each group and the comparative analysis between groups. Finally, we conclude that, in groups of individuals referred to us by the Justice system, particularly the ones who deal with violence against women, the welcoming and the warming up have an important function in the process of intervention promoting the protagonism of the individuals and the rescue of spontaneity and adequate responses to the situations of their own lives.

Este artículo presenta aspectos de la experiencia de atendimiento con grupos de hombres implicados en la violencia doméstica. Se aborda una parte de los resultados obtenidos en los cuatro años de intervención social terapéutica en el contexto del sistema de justicia. Son destacadas la acogida y el caldeamiento en las etapas de la sesión, el proceso de atendimiento social terapéutico y el proceso del grupo. La metodología utilizada es el psicodrama y el método de investigación intervención utilizando el análisis comprensivo del vivido en cada grupo y el análisis comparativo entre ellos. Finalmente, se concluye que, en grupos de individuos encaminados por la justicia, particularmente los que se ocupan de la violencia contra la mujer, la acogida y el caldeamiento tienen una función importante en el proceso de intervención, promoviendo el protagonismo de las personas y el rescate de la espontaneidad y las respuestas adecuadas a las situaciones de sus vidas.

Does warming up improve surgical outcome in total hip arthroplasty?

PURPOSE: Warming up prior to surgery has been shown to enhance surgeons' performance during laparoscopic procedures. It is unknown whether or not warming up prior to total hip arthroplasty (THA) will have a similar effect on surgical outcome. METHODS: We retrospectively evaluated the effect of warming up on the intraoperative outcome of 82 patients who underwent a primary THA with identical implants. The patients were divided equally into two groups. Group 1 (first case of the day) served as "warm-up procedure," while Group 2 (second case of the day) was the "post-warm-up procedure." RESULTS: We found no statistically significant difference when we compared cup abduction and anteversion angles, femoral offset, postoperative LLD, stem alignment, hip center of rotation and femoral stem canal fill between the two groups (p > 0.05). CONCLUSION: Warming up prior to performing surgery does not make a difference for primary THA when performed by an experienced surgeon. However, these results may not reflect its effect on procedures that require fine motor skills or done by an orthopedic trainee or less experienced surgeons.

Comparison of the Effects on Dynamic Balance Ability of Warming up in Water Versus on the Ground.

[Purpose] This research was designed to find out how the so-called "dynamic balance" is affected by doing different types of warm up exercises. In particular, the research is focused on the difference in the effect on dynamic Balance of warming up in water versus on the ground. [Subjects and Methods] Twenty healthy adults were the subjects of this study, with 10 people assigned each to two groups, one warming up in water and another warming up on the ground. The dynamic balance was measured for all subjects before the warming up. The group warming up on the ground conducted active stretching on the ground, and the group warming up in water conducted stretching in water by using water as resistance. [Results] The results indicate that warming up in water has a more powerful effect on a subject's dynamic balance than warming up on the ground. [Conclusion] The group warming up in water, who made use of the viscosity and flow of the water, showed better balance than the group warming up on the ground. Warming up in water, which entails an element of resistance, should be implemented in warm-up routines in the future.

Espiral psicodramático: ciência e arte do aquecimento / Psychodramatic spiral: the science and art of warming up

Este estudo tem como propósito apresentar o espiral psicodramático para aquecimento e verificar sua aplicabilidade por meio da discussão de um caso clínico, à luz dos conceitos e das definições de Moreno e dos psicodramatistas contemporâneos. Buscam-se elementos que estabeleçam interfaces entre o espiral psicodramático com o diagrama de Elaine Goldman, em uma perspectiva complementar e de superposição. Visa-se contribuir para roteiros de sessões em níveis real, imaginário ou de fantasia, e investigar o surgimento das catarses de integração revolutiva, resolutiva e evolutiva. Tendo em vista que a espontaneidade, espinha dorsal da teoria psicodramática, somente é alcançada e mantida mediante o aquecimento em um ponto ideal e adequado, a adoção do espiral psicodramático pode contribuir para o alcance de estados espontâneos.

This study aims to present the use of the psychodramatic spiral in the warm-up process, and to verify its applicability through the discussion of a clinical case, in light of Moreno's and other contemporary psychodramatists' concepts and definitions. It searches for interfaces between the psychodramatic spiral and Elaine Goldman's diagram, looking at their complementary and possible overlaps. It aims to use the psychodramatic spiral for scripts used in sessions, whether working on the level of reality, imaginary or fantasy, and to investigate the emergence of revolute, resolutive and evolutive catharsis of integration. Considering that spontaneity, the backbone of psychodrama theory, can only be achieved and maintained by warning up to an ideal and appropriate level, the use of the psychodramatic spiral can contribute toward achieving these spontaneous states.

Professor Zhang Peiying's Experience in Treatment of Coronary Heart Disease / 浙江中医药大学学报

[Objective] This paper sums up professor Zhang Peiying's scholar thought and clinical experience in diagnosing and treating coronary heart dis-ease. [Methods] From the aspects of the pathological mechanism, and treatment based on syndrome differentiation of coronary heart disease, and the exam-ple of medical record, elaborate that the pathological mechanism is the deficiency of cardiac Yang.Yang deficiency may cause the devitalized chest Yang, which may enable the external pathogenic cold to invade the body.The retention of cold and the stagnation of Qi and blood wil hinder the chest Yang and the circulation of blood in the chest vessels,causing the occurrence of the disease.[Results] The pathological mechanism of coronary heart disease is the deficiency of cardiac Yang and excess of pathogenic factor .Its root belongs to deficiency while its branch belongs to excess. On this base, professor forms Zhang Peiying's treatment principle focusing on relieving both the secondary and primary symptoms, such as replenishing Yang-Qi,and warming up the heart yang and dispel ing cold ,removing blood stasis.Taking an example for the therapy to prove it.[Conclusions]Professor Zhang Peiying's scholar thought and clinical experience in diagnosing and treating coronary heart disease is effective and is trusted and welcomed by patients. His thought and clinical expe-rience are worth to extend and apply.

Princípios fisiológicos do aquecimento e alongamento muscular na atividade esportiva[revisão] / Physiological principles of warm-up and muscle stretching on sports activities

O objetivo deste estudo foi revisar a importância do aquecimento e alongamento muscular na prática esportiva, destacando seus principais efeitos fisiológicos e benefícios, haja vista que o presente assunto tem causado muita dúvida aos atletas profissionais ou amadores bem como em profissionais da área da saúde na realização e prescrição, respectivamente, da prática do aquecimento e alongamento muscular. Foram utilizados 52 textos, entre artigos da base de dados PubMed e livros publicados de 1978 a 2008. Do total, 18 (34,62 por cento) estavam em português e 34 (65,38 por cento) em inglês. Resultados mostraram que o aquecimento tem por principal objetivo prevenir lesões devido à sua gama de efeitos fisiológicos. A realização do alongamento no término do gesto esportivo tem por finalidade evitar o encurtamento muscular, ou se realizado diariamente e por um longo período, favorecer o aumento do número de sarcômeros e, consequentemente, proporcionar um ganho de flexibilidade.

The purpose of this study was to analyze the importance of warming-up and muscle stretching on sports practice, highlighting its main physiological effects and benefits, since the present issue has caused much doubt to professional or amateur athletes as well as to professionals of the health field on designing and prescribing warming-up and muscle stretching, respectively. For this purpose, 52 texts, including articles from PubMed database and books published from 1978 to 2008, were used. From de total, 18 (34.62 percent) were written in Portuguese and 34 (65.38 percent) in English. Results showed that warming-up has the main objective to prevent injuries due to its multitude of physiological effects. The performance of stretching in the end of the sportive gesture has the purpose to prevent muscular shortening, or if carried out daily and for a long period, to provide increase in the number of sarcomeres and consequently to provide flexibility gain.

Circulatory responses to sudden strenuous exercise. A study by mechanocardiographic method / 体力科学

A study was conducted for further investigation of the mechanism of notch formation of heart rate (HR) in sudden strenuous exercise (SSE), and rapid increase in stroke volume (SV) right after SSE which were the questions arised in the prior experiment.<BR>Six healthy male students volunteered for the study. A bicycle ergometer was prepared for SSE. The intensity and duration of SSE were 100%VO<SUB>2</SUB>max and 1 min, respectively. Warming-up consisting of 80%VO<SUB>2</SUB>max for 5 min, preceeded SSE. The interval between SSE and warming-up varied from 5 to 30 min. A control experiment was also conducted without warming-up.<BR>The main results obtained were as follows :<BR>1) Diastolic time (DT) temporarily elongated when a notch of HR was formed at the early stage of SSE. Warming-up prevented this formation. No notch was observed throughout total electromechanical systolic time (QS<SUB>2</SUB>), left ventricular ejection time (LVET) or preejection time (PEP) .<BR>2) DT was prolonged immediately after SSE, while LVET, PEPi (PEP index, Weissler's equation) were shortened. PEP/LVET did not change in the initial stage of the recovery period, while electrical systolic time (QT) and QS<SUB>2</SUB> shortend and QT/QS<SUB>2</SUB> increased temporarily.<BR>These results suggest the following conclusions :<BR>1) Notch formation observed in heart rate is due to the temporary extension of DT at the early stage of SSE.<BR>2) Decrease in afterload may be the main cause for the rapid increase in stroke volume after SSE, though other factors such as increase in preload, myocardial contractility and sympathetic tone should also be considered.

Effects of warming-up on circulatory responses to sudden strenuous exercise / 体力科学

A study was conducted to elucidate the changes in circulatory responses to sudden strenuous exercise (SSE) using beat-by-beat analysis of heart rate (HR), stroke volume (SV) and blood pressure (BP) . The effects of warming-up on these responses were also studied.<BR>Six healthy male students volunteered for the study. A bicycle ergometer was prepared for SSE. The intensity and duration of SSE were 100% VO<SUB>2</SUB>max and 1 min, respectively. Warming-up of 80% VO<SUB>2</SUB>max for 5 min followed by SSE. The interval between SSE and warming-up varied from 5 to 30 min. A control experiment was also performed without warming-up.<BR>The main results obtained were as follows :<BR>1) BP decreased in the initial stage of SSE, followed by a steep increase. This temporary drop in BP was prevented by warming-up. This might contribute to the prevention of myocardial ischemia which is occasionally observed in the initial stage of SSE without warming-up.<BR>2) Time constants of HR and SV during SSE were shortened by warming-up with long intervals, while the time constant of BP was shortened when the interval was short.<BR>3) The recovery response of each parameter was accelerated by warming-up, but the effect of warming-up had almost disappeared after a 30 min interval.<BR>These results suggest the following conclusions :<BR>Warming-up accelerates the up-stroke and recovery of circulatory responses to SSE, but these effects of warming-up are strongly influenced by interval time. In particular, the effect of recovery acceleration is almost abolished by a 30 min interval.

The effects of warming-up on the blood lactate kinetics during exercise / 体力科学

The present investigation was designed to examine the effects of warming-up (W-up) on the blood lactate kinetics during 5 minutes of pedaling exercise. Five healthy male adults were the subjects. The intencity of the criterion task (CT) was about 80% VO<SUB>2</SUB>max, and that of the W-up was a work load corresponding to the anaerobic threshold. Between W-up and CT there were five-minute rest periods on the bicycle ergometer. In order to determine the blood lactate values, blood samples were taken from the antecubital vein at the following times: rest, pre-CT, and 3, 5, 7, and 30-minutes after CT. Expired gas was analysed continuously for the calculation of VO<SUB>2</SUB>, VCO<SUB>2</SUB>, R, VE. The heart rate was recorded every min-ute from ECG.<BR>Blood lactate values increased 3.23±0.91 mmol/<I>l</I> after W-up, a significant increase over the resting values. The peak blood lactate during the W-up experiment (4.62±0.84 mmol/<I>l</I>) was significantly lower than that of the control experiment (6.48±1.69 mmol/<I>l</I>) . Differences in lactate before and after CT (ΔLa) was found to be significantly lower in experiments with W-up (1.39±0.99 mmol/<I>l</I>) as compared with control experiments (5.37±1.62 mmol/<I>l</I>) . In one subject, the blood lactate levels decreased during CT after W-up, while lactate levels increased during CT without W-up. VO<SUB>2</SUB> during CT were very similar in both experiments. These results indicate that this kind of W-up delays the rate of blood lactate accumulation during CT.