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1.
Scand J Med Sci Sports ; 27(1): 124-135, 2017 Jan.
Article in English | MEDLINE | ID: mdl-26530034

ABSTRACT

Exercise classes are a popular form of physical activity. A greater understanding of the individual difference factors that might influence the outcomes of such classes could help to minimize the high dropout rates associated with exercise. The study explored the effects of dominant attentional style and degree of self-determination on affective, cognitive, and behavioral outcomes following structured exercise classes. Data from 417 female participants revealed that those with a dominant attentional style for association (Associators) reported significantly (P < 0.05) more positive affective, cognitive, and behavioral outcomes than did Dissociators, and were more self-determined. Highly self-determined individuals reported the most positive outcomes. Almost 29% of the variance in participants' affective valence could be explained by Dissociators' behavioral regulations. Results lend support to the notion that attentional style is associated with motivation. The combination of attentional style and degree of self-determination appear to be noteworthy individual difference factors that influence responses to exercise classes and could thus have a bearing on long-term exercise adherence.


Subject(s)
Affect , Attention , Cognition , Exercise , Motivation , Physical Education and Training , Adult , Female , Humans , Middle Aged , Personal Autonomy , Surveys and Questionnaires , Young Adult
2.
Melanoma Res ; 34(4): 319-325, 2024 08 01.
Article in English | MEDLINE | ID: mdl-38578293

ABSTRACT

Surveillance frequency for metastasis is guided by gene expression profiling (GEP). This study evaluated the effect of GEP on time to diagnosis of metastasis, subsequent treatment and survival. A retrospective study was conducted of 110 uveal melanoma patients with GEP (DecisionDx-UM, Castle Biosciences, Friendswood, Texas, USA) and 110 American Joint Committee on Cancer-matched controls. Surveillance testing and treatment for metastasis were compared between the two groups and by GEP class. Rates of metastasis, overall survival and melanoma-related mortality were calculated using Kaplan-Meier estimates. Baseline characteristics and follow-up time were balanced in the two groups. Patients' GEP classification was 1A in 41%, 1B in 25.5% and 2 in 33.6%. Metastasis was diagnosed in 26.4% ( n  = 29) in the GEP group and 23.6% ( n  = 26) in the no GEP group ( P  = 0.75). Median time to metastasis was 30.5 and 22.3 months in the GEP and no GEP groups, respectively ( P  = 0.44). Median months to metastasis were 34.7, 75.8 and 26.1 in class 1A, 1B and 2 patients, respectively ( P  = 0.28). Disease-specific 5-year survival rates were 89.4% [95% confidence interval (CI): 81.0-94.2%] and 84.1% (95% CI: 74.9-90.1%) in the GEP and no GEP groups respectively ( P  = 0.49). Median time to death from metastasis was 10.1 months in the GEP group and 8.5 months in the no GEP group ( P  = 0.40). There were no significant differences in time to metastasis diagnosis and survival outcomes in patients with and without GEP. To realize the full benefit of GEP, more sensitive techniques for detection of metastasis and adjuvant therapies are required.


Subject(s)
Gene Expression Profiling , Melanoma , Neoplasm Metastasis , Uveal Neoplasms , Humans , Melanoma/genetics , Melanoma/pathology , Melanoma/mortality , Uveal Neoplasms/genetics , Uveal Neoplasms/pathology , Uveal Neoplasms/mortality , Male , Female , Middle Aged , Gene Expression Profiling/methods , Retrospective Studies , Aged , Adult , Prognosis , Aged, 80 and over
3.
Scand J Med Sci Sports ; 21(6): e445-51, 2011 Dec.
Article in English | MEDLINE | ID: mdl-21819448

ABSTRACT

This study examined relationships between beliefs about emotions (meta-emotion beliefs), emotion regulation strategies, and pre-competition emotional states using an instrumental model of emotion regulation. Three hundred and sixty runners reported meta-beliefs about the influence of anxiety and/or anger on performance, completed a short emotion scale, and reported their use of emotion regulation strategies. Results indicated that 55 runners (15%) reported meta-emotion beliefs that strategies aimed at increasing anxiety and/or anger would help performance while 305 runners (85%) reported beliefs that strategies intended to reduce the same emotions before competition would help performance. Multivariate analysis of variance indicated that people who believe that anxiety or anger is good for performance reported high anger, but not anxiety, before performance. They also reported using strategies to increase unpleasant emotions. We suggest that further research is needed to examine relationships between meta-emotion beliefs and the use of emotion regulation strategies in sport.


Subject(s)
Anger , Anxiety/psychology , Athletes/psychology , Athletic Performance/psychology , Adult , Female , Humans , Male , Middle Aged , Multivariate Analysis , Running/psychology , Self Report
4.
Br J Sports Med ; 39(6): 351-4; discussion 351-4, 2005 Jun.
Article in English | MEDLINE | ID: mdl-15911606

ABSTRACT

OBJECTIVES: To establish injury rates among a population of elite athletes, to provide normative data for psychological variables hypothesised to be predictive of sport injuries, and to establish relations between measures of mood, perceived life stress, and injury characteristics as a precursor to introducing a psychological intervention to ameliorate the injury problem. METHODS: As part of annual screening procedures, athletes at the Queensland Academy of Sport report medical and psychological status. Data from 845 screenings (433 female and 412 male athletes) were reviewed. Population specific tables of normative data were established for the Brunel mood scale and the perceived stress scale. RESULTS: About 67% of athletes were injured each year, and about 18% were injured at the time of screening. Fifty percent of variance in stress scores could be predicted from mood scores, especially for vigour, depression, and tension. Mood and stress scores collectively had significant utility in predicting injury characteristics. Injury status (current, healed, no injury) was correctly classified with 39% accuracy, and back pain with 48% accuracy. Among a subset of 233 uninjured athletes (116 female and 117 male), five mood dimensions (anger, confusion, fatigue, tension, depression) were significantly related to orthopaedic incidents over the preceding 12 months, with each mood dimension explaining 6-7% of the variance. No sex differences in these relations were found. CONCLUSIONS: The findings support suggestions that psychological measures have utility in predicting athletic injury, although the relatively modest explained variance highlights the need to also include underlying physiological indicators of allostatic load, such as stress hormones, in predictive models.


Subject(s)
Athletic Injuries/psychology , Stress, Psychological/etiology , Adolescent , Adult , Affect , Child , Female , Humans , Injury Severity Score , Male , Psychiatric Status Rating Scales , Psychometrics , Queensland , Regression Analysis
5.
J Sports Med Phys Fitness ; 45(2): 208-12, 2005 Jun.
Article in English | MEDLINE | ID: mdl-16355082

ABSTRACT

AIM: The present study investigated the influence of personality on exercise-induced mood changes. It was hypothesised that a) exercise would be associated with significant mood enhancement across all personality types, b) extroversion would be associated with positive mood and neuroticism with negative mood both pre- and post-exercise, and c) personality measures would interact with exercise-induced mood changes. METHODS: Participants were 90 female exercisers (M=25.8 y, SD=9.0 y) who completed the Eysenck Personality Inventory once and the Brunel Mood Scale before and after a 60-min exercise session. Median splits were used to group participants into 4 personality types: stable introverts (n=25), stable extroverts (n=20), neurotic introverts (n=26), and neurotic extroverts (n=19). RESULTS: Repeated measures MANOVA showed significant mood enhancement following exercise across all personality types. Neuroticism was associated with negative mood scores pre- and post-exercise but the effect of extroversion on reported mood was relatively weak. There was no significant interaction effect between exercise-induced mood enhancement and personality. CONCLUSIONS: Findings lend support to the notion that exercise is associated with improved mood. However, findings show that personality did not influence this effect, although neuroticism was associated with negative mood.


Subject(s)
Affect/physiology , Exercise/psychology , Personality , Adolescent , Adult , Emotions/physiology , Extraversion, Psychological , Female , Humans , Introversion, Psychological , Middle Aged , Multivariate Analysis , Neurotic Disorders/psychology , Personality Inventory , Physical Exertion/physiology
6.
Arch Ophthalmol ; 118(6): 773-8, 2000 Jun.
Article in English | MEDLINE | ID: mdl-10865313

ABSTRACT

OBJECTIVE: To determine if a reduction in proton radiation dose from the standard dose of 70 cobalt gray equivalents (CGE) to 50 CGE would decrease radiation-induced complications, thereby improving visual prognosis, without compromising local tumor control for patients with uveal melanoma at high risk of these complications. DESIGN: Randomized, double-masked clinical trial. PARTICIPANTS: A total of 188 patients with small or medium-sized choroidal melanomas (<15 mm in diameter and <5 mm in height) near the optic disc or macula (within 4 disc diameters of either structure). METHODS: Patients were treated with proton beam therapy at doses of either 50 CGE or 70 CGE between October 1989 and July 1994, and followed up biannually through April 1998. Outcomes included visual acuity, radiation complications, melanoma recurrence, and metastasis. RESULTS: Proportions of patients retaining visual acuity of at least 20/200 were similar in the 2 dose groups at 5 years after radiation (approximately 55%). Similar numbers of patients in each group experienced tumor regrowth (2 patients at 50 CGE vs 3 patients at 70 CGE; P>.99) and metastasis (7 patients at 50 CGE vs 8 patients at 70 CGE;P=.79). Five-year rates of radiation maculopathy also were similar (for both groups, approximately 75% for tumors within 1 disc diameter and 40% for tumors >1 disc diameter from the macula). Rates of radiation papillopathy were nonsignificantly decreased in the 50-CGE treatment group when tumors were located 1 disc diameter or less from the optic disc (P=.20). Patients treated with the lower dose also experienced significantly less visual field loss. CONCLUSIONS: This level of dose reduction did not result in a lesser degree of visual acuity loss. The lower-dose group did experience significantly less visual field loss. Local tumor recurrence and metastatic death rates were similar in both dose groups. Arch Ophthalmol. 2000;118:773-778


Subject(s)
Choroid Neoplasms/radiotherapy , Melanoma/radiotherapy , Radiotherapy Dosage , Adult , Aged , Aged, 80 and over , Choroid Neoplasms/physiopathology , Cobalt Radioisotopes/therapeutic use , Dose-Response Relationship, Radiation , Double-Blind Method , Female , Humans , Male , Melanoma/physiopathology , Middle Aged , Radiation Dosage , Radiation Injuries/prevention & control , Visual Acuity/radiation effects , Visual Fields/radiation effects
7.
Arch Ophthalmol ; 117(9): 1161-73, 1999 Sep.
Article in English | MEDLINE | ID: mdl-10496388

ABSTRACT

OBJECTIVE: To evaluate the safety and short-term visual and fluorescein angiographic effects of a single photodynamic therapy treatment with verteporfin with the use of different dosage regimens in patients with choroidal neovascularization (CNV) from age-related macular degeneration. DESIGN: Nonrandomized, multicenter, open-label, clinical trial using 5 dosage regimens. SETTING: Four ophthalmic centers in North America and Europe providing retinal care. PARTICIPANTS: Patients with subfoveal CNV caused by age-related macular degeneration. METHODS: Standardized protocol refraction, visual acuity testing, ophthalmic examination, color photographs, and fluorescein angiograms were used to evaluate the effects of a single treatment of photodynamic therapy with verteporfin. Follow-up was planned through 3 months in 97 patients and for less than 3 months in 31 other patients. RESULTS: The mean visual acuity change (and range of change) from baseline at the follow-up examination at week 12 after a single treatment with regimens 1 through 5 was -0.2 (-3 to +2), -0.9 (-9 to +5), -1.6 (-9 to +2), +0.4 (-8 to +7), and +0.1 (-8 to +9) lines, respectively. Only the highest light dose (150 J/cm2) in regimens 2 and 3, which produced angiographic nonperfusion of neurosensory retinal vessels, caused marked vision loss. Some cessation of fluorescein leakage from CNV was achieved without loss of vision when the light dose used was less than 150 J/cm2. Systemic adverse events were rare. Cessation of fluorescein leakage from CNV was noted in all regimens by 1 week after photodynamic therapy. Fluorescein leakage from at least a portion of the CNV reappeared by 4 to 12 weeks after treatment in almost all cases. Progression of classic CNV beyond the area of CNV identified before treatment was noted in 42 (51%) of the 83 eyes with classic CNV followed up for 3 months after a single treatment. Eyes in which the area of any CNV leakage at 12 weeks was less than at baseline had a significantly better visual acuity outcome (+0.8 line) than eyes in which CNV leakage progressed (-0.8 line). CONCLUSIONS: Photodynamic therapy with verteporfin achieved short-term cessation of fluorescein leakage from CNV without loss of vision or growth of classic CNV in some patients with age-related macular degeneration. Except for nonperfusion of neurosensory retinal vessels at a light dose of 150 J/cm2, no other adverse events were of concern. Randomized clinical trials to investigate whether this new modality can preserve vision in patients with CNV secondary to age-related macular degeneration are justified.


Subject(s)
Choroidal Neovascularization/drug therapy , Macular Degeneration/complications , Photochemotherapy , Photosensitizing Agents/therapeutic use , Porphyrins/therapeutic use , Aged , Aged, 80 and over , Capillary Permeability/drug effects , Choroid/blood supply , Choroidal Neovascularization/etiology , Choroidal Neovascularization/metabolism , Choroidal Neovascularization/pathology , Female , Fluorescein/metabolism , Fluorescein Angiography , Follow-Up Studies , Fundus Oculi , Humans , Male , Middle Aged , Refraction, Ocular , Safety , Treatment Outcome , Verteporfin , Visual Acuity
8.
Arch Ophthalmol ; 117(9): 1177-87, 1999 Sep.
Article in English | MEDLINE | ID: mdl-10496389

ABSTRACT

OBJECTIVES: To evaluate safety and short-term visual acuity and fluorescein angiographic effects of photodynamic therapy (PDT) after retreatments with verteporfin for choroidal neovascularization (CNV) in age-related macular degeneration (AMD) that demonstrated fluorescein leakage after at least 1 course of PDT. DESIGN: Nonrandomized, multicenter, open-label phase 1 and 2 clinical trial using 2 different retreatment dosage regimens. SETTING: Four ophthalmic centers in Europe and North America providing retinal care. METHODS: Standardized protocol refraction, visual acuity testing, ophthalmic examinations, color photographs, and fluorescein angiograms were used to evaluate the results of multiple PDT treatments. Two regimens (regimens 2 and 4) for treatment and retreatment were chosen from 5 used in a single-treatment study. Both regimens used a verteporfin dose of 6 mg/m2 infused for 10 minutes. However, regimen 2 used a light dose of 100 J/cm2 applied 20 minutes after the start of the verteporfin infusion, whereas regimen 4 used a light dose of 50, 75, or 100 J/cm2 applied 15 minutes after infusion commenced. Posttreatment evaluations were planned in 31 participants up to 3 months after up to 2 retreatments given at 2- or 4-week intervals after initial PDT treatment. Similar posttreatment evaluations were planned after retreatments in 5 additional participants who were reenrolled some time more than 12 weeks after an initial PDT treatment. RESULTS: The average visual acuity change for the 31 participants who had retreatment within 2 to 4 weeks after the initial treatment and a follow-up examination 16 to 20 weeks after the initial treatment was 0.2 lines (range, -4 to 4 lines) in regimen 2 and -1.0 line (range, -5 to 3 lines) in regimen 4. Similar outcomes were noted in the 5 reenrolled participants. Cessation of fluorescein leakage from classic CNV for at least 1 to 4 weeks could be achieved without loss of visual acuity after at least 2 treatments in 2 (6.5%) of 31 patients. Similar to single-treatment effects, the disappearance of leakage was documented regularly at 1 week after each retreatment. Fluorescein leakage reappeared by 4 to 12 weeks after a retreatment in almost all cases. However, compared with baseline, leakage activity appeared to be reduced after multiple PDT courses. For the 31 patients who had follow-up for 3 months after the last retreatment and had received retreatment 2 to 4 weeks after the initial treatment, progression of CNV beyond the area identified before the retreatment was noted in 10 (48%) of the 21 eyes with classic CNV in regimen 2 and 9 (90%) of 10 eyes in regimen 4. The rate and severity of ocular or systemic adverse events were not increased by multiple applications. CONCLUSIONS: Multiple applications of PDT with verteporfin achieve repetitive, short-term cessation of fluorescein leakage from CNV secondary to AMD, without loss of visual acuity. This strategy can be used in randomized clinical trials investigating the efficacy of verteporfin in PDT for recurrent fluorescein dye leakage from persistent or recurrent CNV, following an initial or subsequent PDT treatment, with maintenance of visual acuity. Retreatments may achieve progressive cessation of leakage and prevent further growth of CNV and subsequent visual loss.


Subject(s)
Choroidal Neovascularization/drug therapy , Macular Degeneration/complications , Photochemotherapy , Photosensitizing Agents/therapeutic use , Porphyrins/therapeutic use , Aged , Aged, 80 and over , Capillary Permeability/drug effects , Choroid/blood supply , Choroidal Neovascularization/etiology , Choroidal Neovascularization/metabolism , Choroidal Neovascularization/pathology , Female , Fluorescein/metabolism , Fluorescein Angiography , Follow-Up Studies , Fundus Oculi , Humans , Male , Middle Aged , Photosensitizing Agents/administration & dosage , Porphyrins/administration & dosage , Retreatment , Safety , Treatment Outcome , Verteporfin , Visual Acuity
9.
Arch Ophthalmol ; 118(3): 327-36, 2000 Mar.
Article in English | MEDLINE | ID: mdl-10721954

ABSTRACT

OBJECTIVE: To evaluate short-term safety and the effects on visual acuity and fluorescein angiography of single or multiple sessions of photodynamic therapy with verteporfin for choroidal neovascularization (CNV) not related to age-related macular degeneration (AMD), including pathologic myopia, the ocular histoplasmosis syndrome, angioid streaks, and idiopathic causes. DESIGN: A nonrandomized, multicenter, open-label, dose-escalation phase 1 and 2 clinical trial. SETTING: Four ophthalmic centers in Europe and North America providing retinal care. PARTICIPANTS: Thirteen patients with subfoveal CNV due to pathologic myopia, the ocular histoplasmosis syndrome, angioid streaks, or idiopathic causes. METHODS: Standardized protocol refraction, visual acuity testing, ophthalmic examinations, color photographs, and fluorescein angiograms were used to evaluate the results of photodynamic therapy treatments with verteporfin. Follow-up ranged from 12 weeks for patients who were treated once to 43 weeks for patients who were treated up to 4 times. RESULTS: Verteporfin therapy was well tolerated in patients with CNV not related to AMD. No deterioration in visual acuity was observed; most patients gained at least 1 line of vision. Reduction in the size of leakage area from classic CNV was noted in all patients as early as 1 week after verteporfin therapy, with complete absence of leakage from classic CNV in almost half of the patients. Improvement in visual acuity after verteporfin therapy was greatest (+6, +8, and +9 lines) in 3 patients with relatively poor initial visual acuity (between 20/200 and 20/800). Up to 4 treatments were found to have short-term safety even with retreatment intervals as short as 4 weeks. CONCLUSIONS: Treatment of CNV not related to AMD with verteporfin therapy achieves short-term cessation of fluorescein leakage from CNV in a small number of patients without loss of vision. Further randomized clinical trials including a larger number of patients are under way to confirm whether verteporfin therapy is beneficial for subfoveal CNV not related to AMD.


Subject(s)
Angioid Streaks/complications , Choroidal Neovascularization/drug therapy , Eye Infections, Fungal/complications , Histoplasmosis/complications , Myopia/complications , Photochemotherapy , Photosensitizing Agents/therapeutic use , Porphyrins/therapeutic use , Adult , Aged , Aged, 80 and over , Capillary Permeability , Choroidal Neovascularization/etiology , Female , Fluorescein Angiography , Fundus Oculi , Humans , Male , Middle Aged , Safety , Verteporfin , Visual Acuity
10.
Melanoma Res ; 7(3): 237-42, 1997 Jun.
Article in English | MEDLINE | ID: mdl-9195563

ABSTRACT

Experimental and clinical evidence suggests that tumour angiogenesis plays a role in the tendency for certain neoplasms, including cutaneous melanomas, to metastasize. We evaluated whether tumour vasculature is associated with the rate of metastases in patients with melanoma of the choroid or ciliary body. The study was based on a group of 63 patients enucleated between 1976 and 1984 with paraffin-embedded tissue blocks available for sectioning and with known survival status as of December 1988. Vessel endothelial cells were highlighted with Ulex europaeus agglutinin I (UEA-I) conjugated with peroxidase. UEA-I-stained microvessels were counted at varying levels in the tumour (apex, centre and base) without knowledge of patient outcome. Patients with (n = 30) and without (n = 33) metastases had similar total vessel counts (P = 0.31). There was no evidence of greater vessel density in tumours that had metastasized, by level within the tumour. Similar results were obtained in multivariate analyses. Findings of this study suggest that tumour microvessel density is unrelated to patient survival in uveal melanoma.


Subject(s)
Melanoma/blood supply , Neovascularization, Pathologic/pathology , Plant Lectins , Uveal Neoplasms/blood supply , Adult , Aged , Aged, 80 and over , Disease-Free Survival , Female , Humans , Lectins , Male , Melanoma/pathology , Microcirculation/chemistry , Microcirculation/pathology , Middle Aged , Prognosis , Survival Rate , Uveal Neoplasms/pathology
11.
Phys Rev E Stat Nonlin Soft Matter Phys ; 67(5 Pt 1): 051406, 2003 May.
Article in English | MEDLINE | ID: mdl-12786151

ABSTRACT

Small-angle neutron scattering experiments have been performed to investigate orientational ordering of a dispersion of rod-shaped ferromagnetic nanoparticles under the influence of shear flow and static magnetic field. In this experiment, the flow and flow gradient directions are perpendicular to the direction of the applied magnetic field. The scattering intensity is isotropic in zero-shear-rate or zero-applied-field conditions, indicating that the particles are randomly oriented. Anisotropic scattering is observed both in a shear flow and in a static magnetic field, showing that both flow and field induce orientational order in the dispersion. The anisotropy increases with the increase of field and with the increase of shear rate. Three states of order have been observed with the application of both shear flow and magnetic field. At low shear rates, the particles are aligned in the field direction. When increasing shear rate is applied, the particles revert to random orientations at a characteristic shear rate that depends on the strength of the applied magnetic field. Above the characteristic shear rate, the particles align along the flow direction. The experimental results agree qualitatively with the predictions of a mean field model.

12.
Public Health Rep ; 105(6): 617-22, 1990.
Article in English | MEDLINE | ID: mdl-2124361

ABSTRACT

In 1982-83, 4,485 persons ages 65 or older were identified by a household census in East Boston, MA: 3,812 (85 percent) of them responded to a health and social status questionnaire. Data on age, sex, and living arrangements for the 4,485 eligible people were analyzed with respect to final participation status and reason for refusal or reluctance. The health and social status of reluctant and ready self-respondents were compared, and respondents-by-proxy were compared with self-respondents. Total participation rates were similar for both sexes and all ages, but the likelihood of interview by proxy increased with age, as did the likelihood of nonparticipation due to unavailability. Living alone or with other participants favored participation, and living with refusers or other nonrespondents increased the probability of refusal. While reluctant and ready self-respondents differed in only one health variable and two social variables, respondents-by-proxy differed from self-respondents in most variables tested. These analyses suggest an absence of major differences between self-respondents and refusers. Therefore, nonresponse bias is not likely to have a major impact on interpretation of the data obtained from participants in this study.


Subject(s)
Aged , Cooperative Behavior , Surveys and Questionnaires , Boston , Female , Health Status , Humans , Male , Social Class
13.
J Sci Med Sport ; 2(1): 67-77, 1999 Mar.
Article in English | MEDLINE | ID: mdl-10331477

ABSTRACT

The study assessed the influence of age, gender and weight category upon eating attitudes, body shape perceptions, and mood. Elite rowers (N = 103) participating in the 1996 World Championships or Great Britain National Championships completed the Eating Attitude Test (EAT), the Body Shape Questionnaire (BSQ), and a short form of the Profile of Mood States (POMS-C). Participants were grouped as lightweight (Female: < 59 kg, n = 19; Male: < 72.5 kg, n = 31) or heavyweight (Female: n = 25; Male: n = 28) competitors. Results showed higher EAT scores among the lightweight group, 12.0% of whom reported scores above the threshold associated with eating disorders. Body shape concerns were higher for heavyweights than lightweights and for females than males. The interaction effect was not significant. BSQ scores were negatively correlated with age. Depression, Confusion and Tension scores collectively predicted 37% of the variance in BSQ scores while Depression scores predicted 9% of the variance in EAT scores. The results provide further evidence that the risk of eating disorders among elite rowers is moderated by age, gender and weight category. Further, they suggest that measures of mood may help identify athletes at risk from eating disorders.


Subject(s)
Feeding and Eating Disorders/epidemiology , Health Knowledge, Attitudes, Practice , Sports/psychology , Weight Perception , Adolescent , Adult , Affect , Age Factors , England/epidemiology , Feeding and Eating Disorders/psychology , Female , Humans , Male , Prevalence , Sex Factors , Surveys and Questionnaires
14.
J Anim Sci ; 65(2): 366-72, 1987 Aug.
Article in English | MEDLINE | ID: mdl-3624090

ABSTRACT

Udder capacity and udder shape were scored on 3- to 10-yr-old cows from a large Hereford herd. Udder capacity was scored from 1 (small) and 5 (large) and udder shape was scored from 1 (balanced, udder level with ground) to 5 (unbalanced, funnel-shaped udder). Data were analyzed within age of cow for udder capacity scores from 1 to 4 and for udder shape scores from 1 to 3 because of the limited number of observations in other categories. Year of birth of cow was a significant source of variation in both udder capacity and udder shape. Days in lactation (ranging from 81 +/- 23 d in 3-yr-old cows to 71 +/- 25 d in 4-yr-old cows) was an important source of variation for udder capacity; as lactation progressed udder capacity score declined. Body condition of the cow was an important source of variation for udder capacity in 3- and 4-yr-old cows; cows with more external body condition had larger udder capacity scores. The heritability estimates of udder capacity and udder shape for 3-yr-old cows were .12 +/- .14 and .15 +/- .16, respectively; the repeatability estimates of scores over years were .14 +/- .02 and .16 +/- .03, respectively. Residual correlations between udder capacity and udder shape were low, ranging from -.10 in 3-yr-old cows to .10 in 6-yr-old cows. Neither udder characteristic affected the number of years a cow remained in the herd, but cows with unbalanced udders had more udder defects.(ABSTRACT TRUNCATED AT 250 WORDS)


Subject(s)
Body Weight , Cattle/anatomy & histology , Lactation/physiology , Longevity , Mammary Glands, Animal/anatomy & histology , Animals , Female , Pregnancy
15.
J Sports Med Phys Fitness ; 41(4): 539-45, 2001 Dec.
Article in English | MEDLINE | ID: mdl-11687775

ABSTRACT

BACKGROUND: The present study examined the extent to which pre-exercise depressed mood moderated the influence of exercise on changes in other mood dimensions. The study was conducted in an ecologically valid setting using participants with previous experience of aerobic dance exercise. We hypothesized that (a) exercise will be associated with improved mood regardless of depressed mood, (b) the effect of exercise on mood changes would be significantly greater among individuals that reported symptoms of depressed mood before exercise, and (c) that pre-exercise depressed mood will be associated with a mood profile comprising high anger, confusion, fatigue, and tension, with low vigor. METHODS: Participants were 80 (M=27.90 years, SD=4.32 years) exercisers who had attended an exercise class on a regular basis for the previous three months. Participants completed the Profile of Mood States-A 15 minutes before exercise and then immediately after an aerobic dance exercise class. To examine the proposed moderating influence of depressed mood, participants were grouped into either a no-depression group, or a depressed mood group using pre-exercise depression scores. The exercise intervention was an aerobic dance session where participants followed the moves of the instructor. The session lasted for 60 minutes including a warm-up, main session, and cool-down. RESULTS: Repeated measures MANOVA (time x depression/no-depression group) results indicated that anger, confusion, fatigue, tension, and vigor reduced significantly. Thus supporting the notion that exercise reduces negative mood. Results indicated that the reduction in anger, confusion, fatigue, and tension, and increase in vigor was significantly greater in the depressed mood group, hence consistent with theoretical predictions. Results demonstrated that pre-exercise depressed mood was associated with a negative mood profile as hypothesized. CONCLUSIONS: Findings lend support to the notion that exercise is associated with improved mood. However, findings show that this effect was significantly greater among individuals reporting symptoms of depressed mood before exercise.


Subject(s)
Affect/physiology , Depression/psychology , Exercise/psychology , Adult , Depression/classification , Depression/physiopathology , Exercise/physiology , Female , Humans , Male , Multivariate Analysis , Stress, Psychological/therapy , Task Performance and Analysis
16.
Percept Mot Skills ; 91(2): 649-52, 2000 Oct.
Article in English | MEDLINE | ID: mdl-11065327

ABSTRACT

Examination of the mood and performance relationship in sport has been an important line of investigation in sport psychology for over 20 years. Recent research has challenged the notion that the Profile of Mood States is the instrument of choice. It has also moved away from the notion that successful performance is associated with an 'iceberg' profile (Morgan, 1980), arguing that researchers should consider mood and emotion as distinguishable constructs (Jones, Mace, & Williams, 2000; Lane & Terry, 2000. In the present paper, I expand the discussion on mood research in sport by re-examining some of the findings of Jones, et al. in the light of recent work.


Subject(s)
Affect , Emotions , Sports/psychology , Hockey/psychology , Humans , Personality Inventory
17.
Percept Mot Skills ; 84(3 Pt 1): 747-52, 1997 Jun.
Article in English | MEDLINE | ID: mdl-9172179

ABSTRACT

This study examined the influence of confidence in a goal and difficulty of the goal on the attainment of self-set goals regarding time and position. 63 junior high school cross-country runners (M age = 13.5 yr., SD = .5 yr.) completed a 6-item Race Goals Questionnaire approximately 24 hr. prior to a 2-km race. Attainability of a goal was assessed by categorizing runners into either a Performed to Expectation (Time, Position) or an Underperformed group (Time, Position). A 2 x 2 multivariate analysis of variance indicated significant differences between the two groups on Time for Confidence in goals and on Difficulty of Goals. There were no differences between the two groups on Position. Discriminant function analyses to predict time goal performance indicated that 47 (74.6%) participants could be correctly classified into the groups by Time on the basis of Confidence in Goals, and Difficulty of Goals. Discriminant function analyses to predict performance in terms of Position indicated 38 participants (60.3%) could be correctly classified on the basis of Confidence in Goals, and Difficulty of Goals. The results concur with previous proposals that goals regarding time and position have a differential influence on performance.


Subject(s)
Achievement , Goals , Motivation , Running/psychology , Students/psychology , Adolescent , Female , Humans , Internal-External Control , Male , Personality Inventory , Self Concept
18.
Percept Mot Skills ; 85(3 Pt 2): 1275-8, 1997 Dec.
Article in English | MEDLINE | ID: mdl-9450282

ABSTRACT

142 male Tae Kwon-do competitors completed the Competitive State Anxiety Inventory-2 about 1 hr. before competition. Multivariate analysis of variance showed that the players who won reported lower cognitive and somatic anxiety and higher self-confidence than those who lost. Discriminant function analysis indicated that 89 (62.68%) participants could be correctly classified as winners or losers on the basis of their precompetition Competitive State Anxiety Inventory-2 scores. The findings concur with previous research in karate.


Subject(s)
Anxiety/psychology , Competitive Behavior , Martial Arts/psychology , Personality , Psychomotor Performance , Achievement , Adolescent , Adult , Anxiety/diagnosis , Discriminant Analysis , Humans , Male , Martial Arts/statistics & numerical data , Personality Inventory , Self Concept
19.
Percept Mot Skills ; 84(2): 427-33, 1997 Apr.
Article in English | MEDLINE | ID: mdl-9106830

ABSTRACT

The purpose of this study was to extend research investigating the antecedents of multidimensional state anxiety into the sport of rugby. Participants (N = 86; age: M = 23.7 yr., SD = 4.8 yr.) completed a 10-item Prematch Questionnaire developed to assess the antecedents of anxiety and the Competitive State Anxiety Inventory-2 1 hr. prior to competition. Factor analysis of intercorrelations of scores on the Prematch Questionnaire indicated that three factors accounted for 63.3% of the variance. These were labelled Perceived Readiness, Match Conditions, and Coach Influence. Stepwise multiple regression indicated that Perceived Readiness predicted rated Self-confidence and Somatic Anxiety. Game conditions also predicted Self-confidence. Collectively, these factors accounted for 30% of Self-confidence and 11% of Somatic Anxiety. No factor predicted Cognitive Anxiety. Findings support the notion that each sport has unique stressors and that researchers should seek sport-specific measures of the antecedents of anxiety.


Subject(s)
Anxiety/diagnosis , Football/psychology , Personality Inventory , Adolescent , Adult , Anxiety/psychology , Factor Analysis, Statistical , Humans , Male , Personality Inventory/statistics & numerical data , Regression Analysis , Self Concept
20.
Percept Mot Skills ; 81(3 Pt 2): 1255-66, 1995 Dec.
Article in English | MEDLINE | ID: mdl-8684922

ABSTRACT

The study explored predictive paths for antecedents of anxiety, state anxiety responses, and performance. Male triathletes (N = 175) completed a modified Competitive State Anxiety Inventory-2 which included the original intensity scale and a direction scale of Jones and Swain. They also completed a 23-item Prerace Questionnaire which measured antecedents of anxiety among triathletes. Factor analysis of intercorrelations for the Prerace Questionnaire identified six factors similar to those found in 1995 by the present authors. Path analysis to predict state anxiety from antecedents of anxiety indicated that rated intensity of anxiety was predicted by the perceived difficulty of race goals and by perceived readiness. Direction of anxiety was predicted by coach's influence, recent form, and perceived readiness. Path analysis to predict performance from state-anxiety scores and antecedents of anxiety indicated that recent form predicted performance directly without mediation of anxiety responses. Anxiety scores did not predict performance. The findings support the notion that intensity and direction of anxiety responses have different antecedents.


Subject(s)
Anxiety/diagnosis , Psychomotor Performance , Sports , Adolescent , Adult , Humans , Male , Surveys and Questionnaires
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