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PubMed1988

Effects of running and other activities on moods.

The purpose of this study was to compare the moods and mood variations of runners to those of aerobic dancers, weight-lifters, and nonexercising controls. The subjects, 70 undergraduates, were participants in a jogging and conditioning, a weight training, an aerobic dance, or an introductory psychology class. A time-series design was used in which all participants completed eight Profile of Mood State questionnaires over a 6-hr. period that centered on the time of the class. Four questionnaires were completed during the second week of classes and the other four about midsemester, approximately 6 wk. later. Runners had a significantly more positive mood profile than nonexercisers and a somewhat more positive one than weight-lifters, but those of runners and aerobic dancers were similar. Changes in moods across time in relation to activity and across semester suggest that exercise, particularly aerobic exercise, helps the regular participant not only to cope with stress but also to have a generally more positive feeling of well-being.

Adolescent↗
PubMed1999

Relationship of fitness and gross motor skills for five- to six-yr.-old children.

51 kindergarten children participated to assess how various fitness components, 1/2-mile run, the Prudential PACER test, body composition, shoulder stretch, trunk lift, sit-and-reach, curl-up, and flex arm-hang related to motor performance on the Bruininks-Oseretsky test battery including running, speed, agility, balance, bilateral coordination, and strength. All values recorded in the fitness components were compared with standardized motor skill scores. Analysis indicated that 1/2-mile run performance was significantly correlated with body weight and relative body fat, showing that as body weight or relative body fat increased run performance times were slower. Comparisons between the fitness parameters and motor skills indicated that the 1/2-mile run performance also was negatively correlated with measures of balance, bilateral coordination, and strength while the Prudential PACER test was positively correlated with strength. During continuous walk-jog movements (half-mile run) in a relatively homogeneous sample, increases in body size improved balance, bilateral coordination, and strength but negatively affected running during the 1/2-mile fitness test. In more interval-related activities such as the Prudential PACER test, an increase in strength was related to improved performance.

Child↗
PubMed2000

Differentiated ratings of perceived exertion and physiological responses during aerobic dance steps by impact/type of arm movement.

Overall ratings of perceived exertion, i.e., undifferentiated RPE, are often used as indicators of exercise intensity during walking, jogging, and cycling; however, conflicting results concerning RPE during aerobic dance exercise have been reported, and the use of differentiated RPE, i.e., local RPE and central RPE, has not been investigated. The purposes of this study were to assess local, central, and over-all RPE, and physiological responses [heart rate (HR); % HRmax; absolute and relative VO2;% VO2 max, ventilation (VE), ventilatory equivalent (VE.VO2(-1); and oxygen pulse] during aerobic dance exercise varied by Arm Movement (Static Arm vs Dynamic Arm) and Impact (High vs Low). Trained women (N = 25; max VO2 = 50.4 +/- 7.5 ml.kg-1.min.-1) completed four aerobic dance steps. No RPE were significantly correlated with heart rate or VO2; however, for all steps all RPE were significantly (r = .40-.62) correlated with VE.VO2(-1) or VE. No interactions were present for RPE or physiological variables, and main effects were noted for Impact and Arm Movement. All RPE were greater for High Impact and for Static Arm Movement. Because VE and VE.VO2(-1) were correlated with Overall RPE for all steps, this may suggest that participants "attended to" perceived changes in respiratory phenomena during aerobic dance exercise. It appears that during combined arm-and-leg aerobic dance exercise the use of Overall RPE is sufficient to assess perceptual sensations associated with the intensity of the exercise. Changes in Overall RPE were proportionate to objective measures of exercise intensity, i.e., HR and VO2; however, it is recommended that both HR and Overall RPE be used to assess fully a participant's objective and subjective responses during aerobic dance exercise.

Adult↗
PubMed1989

Effects of selected physical activities on health-related fitness and psychological well-being.

To determine the effects of participation in selected physical activities on scores of self-concept, body-cathexis and four items of health-related fitness, 88 women in university physical education service classes participated 3 hr. per week for 8 wk. in one of five activities (aerobic dance, jogging for fitness, swimming for fitness, life saving, and weight training). A total of 108 subjects participated in the study, with 20 students in health science classes serving as the controls. Few differences were noted between the activity groups and the controls on the posttest with pretest scores controlled. Specifically, joggers and aerobic dancers performed significantly more situps than did the controls, and joggers, aerobic dancers, weight trainers, and those in the lifesaving group displayed significantly greater flexibility on the sit and reach test than did the controls, on the posttest. None of the activity groups differed from the controls regarding self-esteem, body cathexis, body fat, or the step test scores at posttest.

Adaptation, Psychological↗
PubMed2002

Tomboys, masculine characteristics, and self-ratings of confidence in career success.

Previous research focusing on gender-roles and self-concept suggests a positive relationship between masculinity and self-concept. The present study explores self-perceptions of being a "tomboy," gender-role and ratings of self-confidence in later success. Higher self-ratings on the tomboy scale correlated with confidence in career success but not with confidence in passing a college course or jogging for 20 min. There was a positive correlation between masculinity scores but not femininity scores with tomboy ratings. Masculine characteristics such as independence, aggression competitiveness, leadership ability, ability to defend, stand by beliefs, mediated by compassion appear to be positively correlated with perceptions of success.

Adolescent↗
PubMed1993

Retro runner with ischial tuberosity enthesopathy.

In reviewing the literature, no studies were found reporting the use of retro running on flat and hilly terrain, which elicited enthesopathy (stress reaction) at the ischial tuberosity. Therefore, this case study of an atypical enthesopathy condition warrants careful scrutiny in order to generate future research. This case study describes the clinical management of a female runner with bilateral patellofemoral pain who self-initiated a program of backward running and stationary bicycling after reading an article about retro running in a runners' magazine. She subsequently developed ischial tuberosity enthesopathy verified by scintigraphy (bone scan). Her symptoms gradually resolved with physical therapy intervention. Eventually, she was able to forward jog 2 miles on flat surfaces without complaint of pain but did not resume retro running. This case not only suggests the need for further research in retro running kinetics and kinematics but highlights the proactive role health professionals must assume in injury prevention.

Adult↗
PubMed2002

Effect of tapered normal and interval training on performance of Standardbred pacers.

Human athletes taper or reduce their training load before a race to enhance performance, apparently because recovery from the effects of fatigue occurs faster than the loss of fitness from the reduced training. However, there appear to be no previous studies of tapering of equine athletes. Our aim in the present study was, therefore, to investigate the efficacy of tapering with Standardbred pacers. We determined the effect of repeated cycles of tapered training on performance of Standardbred pacers. After 8 weeks of jogging and 3 x 2 week cycles of pace work, 19 horses were randomised to a taper and a control group. The taper group completed 5 consecutive 2 week cycles, each incorporating a 7 day taper; some cycles included high-intensity interval training. The control group continued with 5 more cycles of pace work. All horses completed a 2400 m individual time trial after each cycle. Peak and mean speed of the taper group were faster than those of the control group in all cycles; the differences were clear-cut in all cycles for peak speed (overall 4.4%, 95% confidence interval 1.7 to 7.1%), but only in one of the interval-training cycles for mean speed (2.4%, 0.3 to 4.7%). Four horses in the taper group were injured during interval training. Repeated tapering produces a worthwhile enhancement of performance in Standardbreds, but the addition of interval training appears to increase the risk of injury.

Animals↗
PubMed1996

Marijuana and hyperthermia.

BACKGROUND: Animal and human laboratory studies suggest marijuana may cause hyperthermia. However, there are no clinical case reports of life-threatening hyperthermia associated with use of marijuana alone. CASE REPORT: We report a patient who developed severe hyperthermia after smoking a marijuana cigarette and jogging on a warm day. He presented with delirium; hot, red, dry skin; and a rectal temperature of 41.7 degrees C. Historical and laboratory data indicated he had used cannabinoids and no other drugs. This is the first report of life-threatening hyperthermia temporally associated with use of marijuana alone.

Adult↗
PubMed1985

The influence of activity on calcium metabolism.

Many studies and observations have shown the bone-losing effects of physical inactivity of various forms. Contrariwise, less precise studies and observations have supported the reasonable premise that mechanical loading of the skeleton via physical activity shifts the balance of bone remodeling in favor of bone formation, and appears to do so at all ages. Some interesting starts have been made in research to discover the mechanisms of the action on bone of mechanical loading, but many pathways remain to be explored. Besides the mechanical forces, we need to know more about the interrelations of muscle function, probably mediated through muscle-tendon pull on periosteum, and more about other likely influences, notably changes in circulation to bones. The practical significance relative to calcium metabolism and aging of what has been learned thus far on the effects of activity, is that prolonged inactivity, either in a chair or in bed, is to be avoided, because of its deleterious effects, and that reasonably energetic gravitational exercise, such as walking or possibly jogging, promotes maintenance of bone health.

Aged↗
PubMed2000

The Observer Video-Pro: new software for the collection, management, and presentation of time-structured data from videotapes and digital media files.

The Observer Video-Pro is a system for collecting, managing, analyzing, and presenting observational data. It integrates The Observer software with time code and multimedia hardware components. It extends the functionality of a conventional real-time event recording program in various ways. Observational data can be collected, reviewed, and edited with synchronized display of the corresponding video images. For optimal visual feedback during coding, one can display the video image in a window on the computer screen. Video playback from either a VCR or a digital media file can be controlled by the computer, allowing software-controlled jog, shuttle, and search functions. Besides a wide range of VCRs, The Observer Video-Pro supports all major digital video file formats. The software allows the user to summarize research findings in numerical, graphical, or multimedia format. One can create a time--event plot for a quick glance at the temporal structure of the observed process, or run specific analysis procedures and generate reports with statistics. An Event Summary function is available for exploratory and qualitative analysis. Video material can be summarized in a Video Play List, which allows on-screen summary presentations or the creation of highlight compilations on tape, CD, or other media. Video images can be captured and saved as disk files, for use as illustrations in documents, slides for presentations, and so forth. In this paper we describe the design and operation of the system, illustrated with a case study from research on Repetitive Strain Injury (RSI).

Electronic Data Processing↗
PubMed2000

A systematic approach to laceration repair. Tricks to ensure the desired cosmetic result.

An organized, systematic approach to wound repair based on the mnemonic LACERATE can jog the memory and ensure a successful outcome. This stepwise approach consists of looking at the wound to assess repair options, anesthetizing and cleaning the wound, setting up equipment, selecting the proper repair technique, assessing results, determining the patient's tetanus immunization status, and educating the patient about wound care.

Anesthesia, Local↗
PubMed1995

Interviewing the young child sexual abuse victim.

1. Nurses can facilitate the disclosure by a young child of sexual abuse by using developmentally sensitive language, such as through the use of proper nouns, single-idea sentences, and the avoidance of technical terms. 2. Nurses can guide the interview from benign, open-ended questions to context-specific, focused questions. Differentiation is made between being specific versus being suggestive. 3. Rapport-building is an important part of the alliance with the child and the nurse. Interviewers should be matter-of-fact and acknowledge any discomfort the child may demonstrate. 4. Cognitive interviewing is a specific technique designed to access accurate recall of a child's memories through reconstruction and memory-jogging techniques.

Age Factors↗
PubMed1988

Musculoskeletal status of men and women who entered a fitness programme.

The musculoskeletal status at entry into a fitness programme and the incidence of injuries during the first four months of the programme were evaluated in 991 men and women who were aged 20-63 years. At entry, about half of the subjects reported having received treatment for musculoskeletal ailments previously, or that currently they were experiencing musculoskeletal pain and/or discomfort, and about one-third of the subjects reported one or more movement limitations. New injuries during the first four months of the programme were reported by 38% of subjects, with an average duration of impairment of 3.8 weeks, and 43% of those who were injured sought medical treatment. The most frequent type, location, and cause of injury were "joint sprains/strains" (66%), the lower leg (70%), and jogging (33%), respectively. Musculoskeletal problems (previous treatment, current pain or discomfort or movement limitations) in the leg did not predict leg injuries during the programme, but back problems did predict back injuries. Age, sex, body mass index, a parental history of musculoskeletal disease, a sporting history, and the frequency of vigorous exercise during the first four months did not predict injury. The study emphasized: first, the vulnerability of previously-sedentary persons to musculoskeletal injury and the consequent need for care in the management of fitness programmes; secondly, the need for the evaluation of such programmes if they are to have a rational rather than an intuitive basis; and thirdly, the need for epidemiological research on the musculoskeletal system as a basis for systematic efforts, partly through education and ergonomics, to reduce wear and tear on the musculoskeletal system.

Adult↗
PubMed1994

Changes over four years in musculoskeletal impairment in men and women.

OBJECTIVE: To measure changes over four years in musculoskeletal impairment in a group of healthy adults. DESIGN: Longitudinal intervention study with repeated questionnaire assessments at entry, two and four years. SUBJECTS: Adults who volunteered for a fitness program and complied with all three assessments (373 men and 259 women; mean age 42 years). RESULTS: The general four-year trend was an acceleration of musculoskeletal impairment of about 10% per year for three indicators. Movement limited activities increased to a similar extent in men and women; women showed greater increases in pain or discomfort and specialist consultations. For both sexes the most vulnerable anatomical locations were the lower back, neck and knees, while the most common activities associated with movement limitations were jogging and lifting. Pain or discomfort and movement limited activities were age related. CONCLUSIONS: The findings justify anxieties about the increasing costs of musculoskeletal impairment, and highlight important questions about the nature, monitoring and control of such impairment.

Adult↗
PubMed1988

Weight-bearing exercise training and lumbar bone mineral content in postmenopausal women.

STUDY OBJECTIVE: To assess the effect of weight-bearing exercise training and subsequent detraining on lumbar bone mineral content in postmenopausal women. DESIGN: Non-randomized, controlled, short-term (9 months) trial and long-term (22 months) exercise training and detraining (13 months). SETTING: Section of applied physiology at a university school of medicine. PATIENTS: Thirty-five healthy, sedentary postmenopausal women, 55 to 70 years old. All women completed the study. There was 90% compliance with exercise training. INTERVENTIONS: All women were given calcium, 1500 mg daily. The exercise group did weight-bearing exercise (walking, jogging, stair climbing) at 70% to 90% of maximal oxygen uptake capacity for 50 to 60 min, 3 times weekly. MEASUREMENTS AND MAIN RESULTS: Bone mineral content increased 5.2% (95% confidence interval [CI], 2.0% to 8.4%; P = 0.0037) above baseline after short-term training whereas there was no change (-1.4%) in the control group. After 22 months of exercise, bone mineral content was 6.1% (95% CI, 3.9% to 8.3% above baseline; P = 0.0001) in the long-term training group. After 13 months of decreased activity, bone mass was 1.1% above baseline in the detraining group. CONCLUSIONS: Weight-bearing exercise led to significant increases above baseline in bone mineral content which were maintained with continued training in older, postmenopausal women. With reduced weight-bearing exercise, bone mass reverted to baseline levels. Further studies are needed to determine the threshold exercise prescription that will produce significant increases in bone mass.

Aged↗
PubMed1990

Gastroesophageal reflux in runners. Characteristics and treatment.

STUDY OBJECTIVE: To test the potential of distance running to induce reflux in healthy subjects and the ability of ranitidine to decrease esophageal acid exposure. DESIGN: A randomized, single-blind, crossover study. Objective assessment of reflux was done using an ambulatory intra-esophageal pH monitor during both a baseline hour and 1 hour of running on 2 days of testing. SUBJECTS: Fourteen normal volunteers (10 men, four women) between 22 and 37 years of age were studied. All volunteers ran regularly, completing an average of 20 miles weekly for at least 6 months. INTERVENTIONS: Ranitidine, 300 mg orally, or an identical placebo was administered after a low-fat breakfast just before the baseline hour of pH recording. SETTING: Esophageal motility and pH probe placement was done in the gastroenterology unit at Bowman Gray Medical Center. Running was done on local jogging trials. MEASUREMENTS AND MAIN RESULTS: There was more gastroesophageal reflux during running than during the baseline hour when reflux was measured at a pH threshold of 3.0, 4.0, or 5.0 (P less than 0.05). Reflux episodes were usually associated with belching. Ranitidine, 300 mg administered orally 1 hour before running, significantly (P less than 0.05) reduced the amount of esophageal acid exposure during running. CONCLUSIONS: Gastroesophageal reflux occurs during running in healthy volunteers. It is usually associated with belching. Acid suppression with ranitidine decreases intraesophageal acid exposure during running (P less than 0.05).

Adult↗
PubMed1999

Physical training augments plasma catecholamines and natural killer cell activity.

To elucidate the effects of a 10-week exercise training period on physical fitness and plasma catecholamine concentration at rest, and on natural killer cell activity in young healthy untrained females, subjects (20-22 years old. N = 16) carried out physical training by a protocol which consisted of treadmill jogging at a work-intensity of 50% of their VO2max, two hours a day three times a week for ten weeks. VO2max was increased significantly from 33.1 +/- 3.4 ml/kg/min to 38.3 +/- 6.6 ml/kg/min by the ten weeks of physical training (P < 0.005), and natural killer cell activity was also increased significantly from 31.9 +/- 14.3% to 46.4 +/- 18.4% (P < 0.05). The concentrations of epinephrine and norepinephrine before and after physical training were 18.3 +/- 8.7 pg/ml and 20.4 +/- 8.9 pg/ml, and 134.1 +/- 52.2 pg/ml and 248.1 +/- 106.8 pg/ml (P < 0.005), respectively. Changes in norepinephrine and epinephrine correlated with the change in VO2max (r = 0.780, P < 0.005; r = 0.556, P < 0.05). While the change in natural killer cell activity correlated with the change in epinephrine (r = 0.623, P < 0.01), the correlation of the change in natural killer cell activity with change in norepinephrine did not reach statistical significance (r = 0.497, P = 0.0503). From these results we concluded that physical training augments plasma catecholamine levels and natural killer cell activity at rest in young healthy females.

Adult↗
PubMed1997

The exercise prescription: focus on vascular mechanisms.

Recent recommendations by expert bodies for reducing cardiovascular risk factors have included accumulation of 30 min/day of moderate activity in an intermittent fashion. There is little support for this recommendation for blood pressure reduction, the most effective, proven exercise regimens being of moderate intensity, performed three or four times per week for durations of not less than 30 min. Although cycling and jogging have proven efficacious in blood pressure reduction, walking provides less benefit but might be preferable for older individuals, and for those with orthopedic and cardiac limitations. There are preliminary indications that moderate swimming programs reduce the systolic blood pressure. Benefit in reducing other risk factors including the lipid profile, insulin sensitivity, body composition and weight, neurohumoral factors and cardiac structure and functioning has also been shown to occur with continuous bouts of exercise. Vascular adaptation represents a particular mechanism of benefit. Aerobic training increases the large-artery compliance, contributing to a reduction in systolic blood pressure and an attenuation of the cardiac afterload. The release of endothelially derived nitric oxide increases with regular exercise and might modulate changes in arterial compliance to some extent. Moderate cycling for 4 weeks increased basal nitric oxide production in previously sedentary normal and hypercholesterolemic individuals. Highly trained athletes had increased forearm endothelium-dependent vasodilator reserve. This effect, if it is translatable to the coronary circulation, might provide protection against ischemia. The efficacy with which an increase in physical activity can impact on cardiovascular risk factors will depend largely on adherence to exercise programs. Adherence could improve with lower intensity, intermittent programs. Further study in this area is warranted in order to determine the impact of such interventions on risk factors and vascular changes.

Journal Article↗