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Canadian journal of sport sciences = Journal canadien des sciences du sport最新文献

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Changes in gait with aging. 步态随年龄的变化。
Canadian journal of sport sciences = Journal canadien des sciences du sport Pub Date : 1991-09-01
D A Winter
{"title":"Changes in gait with aging.","authors":"D A Winter","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":77060,"journal":{"name":"Canadian journal of sport sciences = Journal canadien des sciences du sport","volume":"16 3","pages":"165-7"},"PeriodicalIF":0.0,"publicationDate":"1991-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12820230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The regulation of myosin gene transcription in skeletal muscle: effects of altered functional demand. 骨骼肌肌球蛋白基因转录的调控:功能需求改变的影响。
Canadian journal of sport sciences = Journal canadien des sciences du sport Pub Date : 1991-09-01
J C McDermott, A Bonen
{"title":"The regulation of myosin gene transcription in skeletal muscle: effects of altered functional demand.","authors":"J C McDermott,&nbsp;A Bonen","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Perturbations in the activity patterns of skeletal muscle have been used to probe adaptive mechanisms that occur when the function of a muscle is altered. A plethora of information is available concerning the phenotypic changes that occur in the skeletal muscle myosin patterns when the load placed on a muscle is changed. More recently, technological advances in molecular biology have facilitated investigations concerning how these changes at the protein level are mediated via transcription of the genome. The focus of this review will be the recent evidence concerning the regulation of transcription of the myosin isogenes in skeletal muscle. In addition, putative regulatory factors are discussed which may link an alteration in function to altered transcription of the genome.</p>","PeriodicalId":77060,"journal":{"name":"Canadian journal of sport sciences = Journal canadien des sciences du sport","volume":"16 3","pages":"210-22"},"PeriodicalIF":0.0,"publicationDate":"1991-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12820238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A kinematic analysis of walking and physical fitness testing in elderly women. 老年妇女步行与体能测试的运动学分析。
Canadian journal of sport sciences = Journal canadien des sciences du sport Pub Date : 1991-09-01
M Kaneko, Y Morimoto, M Kimura, K Fuchimoto, T Fuchimoto
{"title":"A kinematic analysis of walking and physical fitness testing in elderly women.","authors":"M Kaneko,&nbsp;Y Morimoto,&nbsp;M Kimura,&nbsp;K Fuchimoto,&nbsp;T Fuchimoto","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Walking ability and physical fitness were assessed in 57 elderly Japanese women. Self-selected walking velocity at normal and fast speeds decreased markedly after age 60. The older age groups exhibited significant reductions in the lower limb joint displacements, due particularly to decreased angles at toe-off. The angular velocity of ankle plantarflexion during the stance phase declined markedly with age. A decrease in toe elevation during the swing phase and an increase in stance time in the process of aging suggested an increasing risk of stumbling over obstacles. Reductions in walking parameters with age correlated significantly with aspects of physical fitness tested, especially with items related to neuromuscular functions.</p>","PeriodicalId":77060,"journal":{"name":"Canadian journal of sport sciences = Journal canadien des sciences du sport","volume":"16 3","pages":"223-8"},"PeriodicalIF":0.0,"publicationDate":"1991-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12821169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Can one train cardiorespiratory and muscular fitness simultaneously? 一个人能同时训练心肺和肌肉吗?
Canadian journal of sport sciences = Journal canadien des sciences du sport Pub Date : 1991-09-01
I Jacob
{"title":"Can one train cardiorespiratory and muscular fitness simultaneously?","authors":"I Jacob","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":77060,"journal":{"name":"Canadian journal of sport sciences = Journal canadien des sciences du sport","volume":"16 3","pages":"167-8"},"PeriodicalIF":0.0,"publicationDate":"1991-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12820232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Molecular biology of muscle and the sport practitioner. 肌肉分子生物学和运动实践者。
Canadian journal of sport sciences = Journal canadien des sciences du sport Pub Date : 1991-09-01
H Green
{"title":"Molecular biology of muscle and the sport practitioner.","authors":"H Green","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":77060,"journal":{"name":"Canadian journal of sport sciences = Journal canadien des sciences du sport","volume":"16 3","pages":"164-5"},"PeriodicalIF":0.0,"publicationDate":"1991-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12820229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Adaptations to endurance and low velocity resistance training performed in a sequence. 适应耐力和低速阻力训练进行的顺序。
Canadian journal of sport sciences = Journal canadien des sciences du sport Pub Date : 1991-09-01
G J Bell, S R Petersen, J Wessel, K Bagnall, H A Quinney
{"title":"Adaptations to endurance and low velocity resistance training performed in a sequence.","authors":"G J Bell,&nbsp;S R Petersen,&nbsp;J Wessel,&nbsp;K Bagnall,&nbsp;H A Quinney","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The purpose of this study was to examine the effects of two different sequences of the same two training programs on strength and endurance adaptations. One group completed 5 weeks of low velocity resistance (LVR) training prior to 5 weeks of endurance training (Group SE) while the other group (ES) completed the opposite sequence. Endurance training and resistance training resulted in anticipated increases in aerobic endurance measures and strength, respectively, regardless of the sequence followed. Some maintenance of strength was observed during subsequent endurance training in Group SE. However, the improvements in peak VO2 and submaximal exercise responses that occurred after endurance training in Group ES were not maintained with subsequent LVR training. This investigation suggests that conducting LVR training prior to endurance training may be more beneficial if resistance and endurance training are performed in a sequence.</p>","PeriodicalId":77060,"journal":{"name":"Canadian journal of sport sciences = Journal canadien des sciences du sport","volume":"16 3","pages":"186-92"},"PeriodicalIF":0.0,"publicationDate":"1991-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12820234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spinal anaesthesia and its common side effects. 脊髓麻醉及其常见的副作用。
Canadian journal of sport sciences = Journal canadien des sciences du sport Pub Date : 1991-09-01
W Van Helder
{"title":"Spinal anaesthesia and its common side effects.","authors":"W Van Helder","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":77060,"journal":{"name":"Canadian journal of sport sciences = Journal canadien des sciences du sport","volume":"16 3","pages":"167"},"PeriodicalIF":0.0,"publicationDate":"1991-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12820231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Socialization on the role of the coach in minor league hockey]. [冰球小联盟教练角色的社会化]。
Canadian journal of sport sciences = Journal canadien des sciences du sport Pub Date : 1991-09-01
C Spallanzani
{"title":"[Socialization on the role of the coach in minor league hockey].","authors":"C Spallanzani","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The purpose of this study was to examine the effectiveness of the socialization model developed by Kenyon and McPherson (1973) to determine the degree of socialization of minor league hockey coaches. A questionnaire was administered to 333 current coaches and 175 former coaches from the Quebec City area. Results showed that the coaches' perception of their competence, the degree of watching professional hockey as a spectator, the material factors, and the influence of the peer group were positively associated with their degree of socialization; however, the influence of their own children on the decision to be a coach was negatively associated with their degree of socialization. Results also show that less than 30% of the variance was explained by the model. Different research strategies are suggested in order to better investigate the phenomenon.</p>","PeriodicalId":77060,"journal":{"name":"Canadian journal of sport sciences = Journal canadien des sciences du sport","volume":"16 3","pages":"193-9"},"PeriodicalIF":0.0,"publicationDate":"1991-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12820235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Left ventricular functional response to moderate and intense exercise. 中高强度运动对左心室功能的影响。
Canadian journal of sport sciences = Journal canadien des sciences du sport Pub Date : 1991-09-01
J M Goodman, M J Plyley, C A Lefkowitz, P P Liu, P R McLaughlin
{"title":"Left ventricular functional response to moderate and intense exercise.","authors":"J M Goodman,&nbsp;M J Plyley,&nbsp;C A Lefkowitz,&nbsp;P P Liu,&nbsp;P R McLaughlin","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The left ventricular (LV) volume and ejection fraction (EF) response to upright exercise was assessed on 15 normal subjects during cycle ergometry. Measures of cardiac function and gas exchange were made at rest, at 85% of the ventilatory anaerobic threshold (VAT; WL1), and at peak exercise (WL2). EF increased from rest (58 +/- 12%) during WL1 (66 +/- 10%), reaching significantly higher values at WL2 (69 +/- 8%; p less than .05). End-diastolic volume increased from rest during WL1 (136 +/- 36 ml vs. 118 +/- 32 ml; p less than .05), becoming significantly higher than rest during WL2 (141 +/- 41 ml). End-systolic volume was unchanged from rest (51 +/- 25 ml) during submaximal exercise (50 +/- 20 ml), but it decreased significantly during WL2 (44 +/- 21 ml; p less than .05). The systolic pressure/end-systolic volume ratio increased from 3.0 +/- 1.7 (rest) to 5.8 +/- 3.0 at WL2 (p less than .05). These results suggest that the Frank-Starling mechanism is operative throughout exercise, particularly during exercise below the VAT. LV performance after the VAT is further augmented by increased contractility with continued, yet diminished, utilization of the Frank-Starling mechanism.</p>","PeriodicalId":77060,"journal":{"name":"Canadian journal of sport sciences = Journal canadien des sciences du sport","volume":"16 3","pages":"204-9"},"PeriodicalIF":0.0,"publicationDate":"1991-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12820237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Coach/player relationships in tennis. 网球中的教练/球员关系。
Canadian journal of sport sciences = Journal canadien des sciences du sport Pub Date : 1991-09-01
H Prapavessis, S Gordon
{"title":"Coach/player relationships in tennis.","authors":"H Prapavessis,&nbsp;S Gordon","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The present study examined the variables that predict coach/athlete compatibility. Compatibility among a sample of 52 elite tennis coach/player dyads was assessed using a sport adapted version of Schutz's (1966) Fundamental Interpersonal Relations Orientation-Behaviour (FIRO-B), a sport adapted version of Fiedler's (1967) Least Preferred Co-worker scale (LPC), and Chelladurai and Saleh's (1980) Leadership Scale for Sport (LSS). Self-ratings of the quality of the interaction were obtained from both coach and athlete. Multiple-regression analyses using self-rating scores as the dependent measure were carried out to determine which variables best predicted the degree of compatibility. The sole inventory that significantly predicted compatibility was the LSS. More specifically, the discrepancy between the athlete's preferences and perceptions on the autocratic dimension was the best predictor. Implications for tennis coaches and recommendations for future research in this area are discussed.</p>","PeriodicalId":77060,"journal":{"name":"Canadian journal of sport sciences = Journal canadien des sciences du sport","volume":"16 3","pages":"229-33"},"PeriodicalIF":0.0,"publicationDate":"1991-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12821170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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