共查询到20条相似文献，搜索用时 15 毫秒
1.
Melbourne F. Hovell C. Richard Hofstetter James F. Sallis Mitchell J. D. Rauh Elizabeth Barrington 《Research quarterly for exercise and sport》2013,84(4):425-434
Abstract This study was designed to identify correlates of change in walking for exercise. Respondents to a random sample mailed exercise survey were asked to complete a follow-up questionnaire 24 months after the first. Responses were obtained from 1,739 adults, reflecting an 86.6% return rate. Nonrespondents did not differ from respondents for baseline level of walking for exercise. Respondents overrepresented Caucasian and middle to high education (or income) adults. Residualized measures of change in walking for exercise served as the dependent variable, adjusted for baseline walking. Similarly, key independent variables, subject to change over time, were included after residualization. At both baseline and 24 months follow-up, adults walked for exercise an average of just under 1 hour per week, and 23.5% of the initially active adults ceased walking for exercise at 2 years. Multiple regression analyses explained more variance in walking for exercise among women than men. Change in dynamic variables such as friend's support and vigorous physical activity accounted for most of the explained variance. Results suggest that dynamic variables may need to be sustained to maintain walking for exercise. The limited explained variance suggests that more precise measures and additional determinants of walking for exercise need to be identified. 相似文献
2.
De Bourdeaudhuij I Sallis J Vandelanotte C 《Research quarterly for exercise and sport》2002,73(4):376-385
Tracking and explaining physical activity in young adults was investigated in a 7-year longitudinal design. From a representative sample of 980 respondents at baseline (M age = 21 years), 172 respondents, comprising 18% of the original sample, completed psychosocial questionnaires and were interviewed at home to assess their level of physical activity at follow-up. Psychosocial variables were grouped into four groups: social variables, self-efficacy, perceived benefits, and perceived barriers. Drop-out analyses showed no major differences between the baseline and follow-up samples. The aims of the present study were: (a) to investigate tracking in physical activity and psychosocial determinants over a 7-year period, and (b) to examine baseline determinants and change in determinants in predicting physical activity change in men and women. No significant tracking of physical activity level was found for men. For women, moderate tracking scores were found for total energy expenditure and moderate-intensity energy expenditure (r = .34 and .41, respectively). There was higher tracking in psychosocial determinants than in physical activity. Relatively high tracking scores for perceived benefits and barriers suggest that cognitions related to physical activity are more stable than the behavior itself. Although baseline psychosocial variables were poor predictors of physical activity change, determinants'change scores accounted for 16-19% of the variance in physical activity in men and 7-24% in women. Significant predictors were different for men and women. Present results can inform the design of physical activity interventions for these populations. 相似文献
3.
The main aim of this study was to assess the effects of a fitness assessment and exercise consultation on physical activity over 1 year in non-regularly active participants drawn from a socially and economically deprived community. Of 3000 people invited to volunteer for either intervention, 225 fitness assessment volunteers were randomly assigned to an experimental or control group; 145 exercise consultation volunteers were similarly assigned. Physical activity was measured at baseline, 4 weeks, 3 months (plus an intervention re-test), 6 months and 1 year. Analysis of variance and follow-up Bonferroni analysis showed that, for those not regularly active at baseline, physical activity increased significantly to 4 weeks, was maintained to 6 months but had fallen by 1 year. Only those receiving an exercise consultation significantly increased their physical activity after 1 year. Compared with fitness assessments, chi-square analysis showed that significantly more non-regularly active participants volunteered for an exercise consultation and those receiving an exercise consultation had significantly better long-term study adherence than those receiving a fitness assessment. The study also showed that, contrary to popular opinion, those in a socially and economically deprived community are not 'hard to reach' and respond well to physical activity interventions. 相似文献
4.
There have been limited prospective studies investigating physical activity and physical self-perceptions in children. In this investigation, mean steps/day did not significantly change from late elementary to junior high for either boys or girls; however; boys accumulated more steps both at baseline and follow-up. Physical self-perception measures were significantly related to changes in steps/day and accounted for 21% (15% adjusted) of the variance after controlling for demographic/biological variables, R2 change = .21, adjusted R2 change = .15, F (5,88) = 4.66, p < .001. Sport competence emerged as the most important predictor t (88) = -3.76, p < .001, and was inversely related to physical activity change. The lack of opportunities to participate in sport activities normally found at the onset of adolescence may help explain this unexpected result. 相似文献
5.
The main aim of this study was to assess the effects of a fitness assessment and exercise consultation on physical activity over 1 year in non-regularly active participants drawn from a socially and economically deprived community. Of 3000 people invited to volunteer for either intervention, 225 fitness assessment volunteers were randomly assigned to an experimental or control group; 145 exercise consultation volunteers were similarly assigned. Physical activity was measured at baseline, 4 weeks, 3 months (plus an intervention re-test), 6 months and 1 year. Analysis of variance and follow-up Bonferroni analysis showed that, for those not regularly active at baseline, physical activity increased significantly to 4 weeks, was maintained to 6 months but had fallen by 1 year. Only those receiving an exercise consultation significantly increased their physical activity after 1 year. Compared with fitness assessments, chi-square analysis showed that significantly more non-regularly active participants volunteered for an exercise consultation and those receiving an exercise consultation had significantly better long-term study adherence than those receiving a fitness assessment. The study also showed that, contrary to popular opinion, those in a socially and economically deprived community are not 'hard to reach' and respond well to physical activity interventions. 相似文献
6.
Gina Pariser Mary Ann DeMeuro Patricia Gillette Winters Stephen 《Cardiopulmonary Physical Therapy Journal》2010,21(2):5-12
Purpose: Some adults with type 2 diabetes mellitus (T2DM) have comorbidities and mobility impairments that limit their exercise capacity. In consideration of this, we developed and piloted a program called Active Steps for Diabetes for people with T2DM, comorbidities, and mobility impairments. The purpose of this paper was to report outcomes for the pilot program. Methods: Active Steps for Diabetes, an 8-week program, included instruction on diabetes self-care andgroup and home exercise programs. Twenty-two females (62.7 ± 6.1yrs) with T2DM and self-reported mobility impairments completed the program. Six participants used a walking aid. Outcome measures included two risk factors for coronary artery disease [daily physical activity and body mass index (BMI)], cardiovascular fitness (6-minute walk distance), and knowledge of diabetes-specific exercise guidelines. A two-way repeated measures ANOVA was used to compare outcomes before and after the program and between participants who did and did not use a walking aid. Results: Active Steps for Diabetes was effective in increasing daily physical activity in both groups of subjects (walking aid group: 2.6 days/week [95% confidence interval (CI) = 2.1 to 3.3]; no walking aid group: 1.9 days/week [95% CI=1.2 to 2.5]). This was accompanied by increases in 6-minute walk distances (walking aid group: 54.0 m [95% CI = 36.4 to 71.6]; no walking aid group: 62.6 m [95% CI=55.7 to 69.4]). Changes in BMI were not significant (walking aid group: −0.4 [95% CI = −1.2 to 0.4]; no walking aid group: −.24[95% CI = −.91 to .44]). Increases in knowledge of diabetes-specific exercise guidelines were observed in both groups (walking aid group: 18.8% [95% CI = 11.3 to 26.4]; no walking aid group: 19.3% [95% CI = 16.1 to 22.5]). Discussion:: Physical inactivity and low cardiovascular fitness are predictors of CAD morbidity and mortality in adults with T2DM. This pilot program suggests that a model for diabetes education, incorporating exercise programs developed by a physical therapist, may increase physical activity, improve endurance, and thereby potentially reduce CAD risk in people with T2DM and mobility impairments from comorbidities.Key Words: type 2 diabetes, physical activity 相似文献
7.
Peter Reddy Irundika Dias Carol Holland Niyah Campbell Iaysha Nagar Luke Connolly 《European Journal of Sport Science》2017,17(5):638-645
The health benefits of playing football and the importance of exercise and social contact for healthy ageing are well established, but few older adults in the UK take enough exercise. Football is popular, flexible in format and draws players into engrossing, effortful and social exercise, but the physical demands of play at full speed may make it unsustainable for some older adults. Restricted to walking pace, will play still be engaging? Will health benefits be retained? Will physical demands remain manageable? This pilot study aims to investigate: (1) the experience of older adults playing walking football every week, is it sustainable and rewarding, (2) the intensity and locomotor pattern of walking football, (3) the scale and nature of walking football health benefits and (4) possible cognitive benefits of playing walking football through measures of processing speed, selective and divided attention and updating and inhibition components of executive function. ‘Walking football’ and ‘waiting list’ groups were compared before and after 12 weeks of one-hour per week football. Walking football was found to be engaging, sustainable for older adults and moderately intensive; however, selective health and cognitive benefits were not found from this brief intervention.Highlights
Walking football is a lower impact but authentic form of football that enables older players to extend their active participation.
Walking football is enjoyable and moderately demanding and may be a sustainable form of exercise for older adults.
Health and cognitive benefits to playing walking football were not found.
8.
Deborah L. Dewar Ronald C. Plotnikoff Philip J. Morgan Anthony D. Okely Sarah A. Costigan 《Research quarterly for exercise and sport》2013,84(4):483-491
Purpose The aim of this study was to test the hypothesized structural paths in Bandura's social-cognitive theory (SCT) model on adolescent girls' physical activity following a 12-month physical activity and dietary intervention to prevent obesity. Method We conducted a 12-month follow-up study of 235 adolescent girls (M age = 13.2 years, SD = 0.4) from 12 secondary schools located in low-income communities. At baseline, participants completed SCT scales related to physical activity (i.e., self-efficacy, intention, parental support, and outcome expectations). At baseline and 12-month follow-up (postintervention), participants wore accelerometers for 7 days. Structural equation modeling was used to determine if Time 1 measures predicted physical activity at 12-month follow-up after adjusting for baseline activity. Results The model explained 28% and 34% of the variance in physical activity and intention, respectively. Model fit indexes indicated the data were a good fit to the model; however, only self-efficacy was associated with physical activity at 12 months. There was no support for intention or outcome expectations as proximal determinants of behavior. Self-efficacy was associated with outcome expectations and parental support; however, only outcome expectations predicted intention. Conclusions Current findings indicate a large proportion of the variance for physical activity and intention remains unexplained and that the proposed pathways in the SCT model were not fully supported. Future model testing may need to consider augmentation or integration of theoretical models, which may include ecological components if we are to advance our understanding of physical activity behavior in this subgroup of the adolescent population. 相似文献
9.
目的：探讨运动对中年糖耐量减低患者胰岛素抵抗、游离脂肪酸的影响。方法：将61名糖耐量减低患者随机分为健步走组20例、健步走＋抗阻力运动组20例、对照组21例，两运动组进行24周运动处方的锻炼，并与对照组对比。结果：两运动组24周运动干预前后胰岛素抵抗指数和血游离脂肪酸的差异具有显著性；与健步走组相比，健步走＋抗阻力运动组游离脂肪酸降低的幅度较明显。结论：对中年IGT患者进行运动干预可提高胰岛素敏感性，降低游离脂肪酸水平，且健步走＋抗阻力运动对游离脂肪酸降低的效果较健步走的大。 相似文献
10.
Downs DS Graham GM Yang S Bargainnier S Vasil J 《Research quarterly for exercise and sport》2006,77(1):91-99
The study purposes were to examine: (a) the determinants of exercise intention and past exercise behavior (PEB) using the theories of reasoned action and planned behavior, and (b) the moderating influences of sex and exercise group (meeting or not meeting exercise guidelines). Participants (n = 676 adolescents) completed self-reported measures of their exercise attitude, subjective norm, perceived behavioral control (PBC), intention, and PEB. We found that attitude, subjective norm, and PBC explained 55% of the variance in intention, and intention and PBC explained 51% of the variance in PEB. While we found sex and exercise group differences across the study measures, we did not find evidence of significant moderation. Thus, the theory constructs predicted intention and PEB similarly across sex and exercise groups. 相似文献
11.
Anna Wasserkampf Jens Kleinert 《International review of sport and exercise psychology》2016,9(1):65-95
In facilitating the adoption of exercise behavior, attention should be directed towards the dynamic nature of behavioral regulations. Organismic integration theory presents a suitable framework for investigating fluctuations in behavioral regulations. However, current results pertaining to this issue revealed mixed findings. The aim of this review is to examine the empirical literature on the dynamic nature of organismic integration theory in exercise settings over time in adults. A systematic review of English articles using PsycINFO, PsycARTICLES, ScienceDirect, and SPORTDiscus was conducted including keywords of organismic integration theory, longitudinal designs, change in behavioral regulations, and exercise. Findings are summarized through quantitative analysis of the evidence. Regarding autonomous regulations, steady increases in regulations are observable that originate within the first weeks and persist for up to one year. Most studies reported no changes in controlled regulations, although in a few cases changes were observed six weeks after baseline or later. The review adds to the theoretical understanding of how behavioral regulations are internalized. However, whether changes in regulation occur depends on both the type of regulation and on contextual characteristics. Future research of longitudinal design is warranted to identify optimal periods in which individuals seek for increased support during exercise adoption. 相似文献
12.
Submaximal measures of perceived exertion, aches and pain in the legs, heart rate and blood lactate were made in a bicycle ergometer test. Their predictability of maximal work capacity, measured as Wmax, was studied. Twenty-eight males in good physical condition served as subjects and cycled in a graded exercise test up to a voluntary maximum. The reliability coefficients for both the psychophysical variables--measured on Borg's CR-10 scale--and heart rate were high. Provided that a proposed preliminary division of the subjects into subgroups with regard to their physical fitness was undertaken, the regression analyses showed that the psychophysical variables were the best predictors of Wmax. Linear and curvilinear predictions, graphic or calculated, had lower explained variance but also showed that the psychophysical variables are good predictors of maximal work capacity. 相似文献
13.
We investigated the effects of two types of nonweight-bearing exercise on changes in bone-specific alkaline phosphatase (BAP) and procollagen type 1 C-peptide (PIP). BAP is a specific marker of bone synthesis, whereas P1P reflects synthesis of type 1 collagen in other organs as well as bone. Eight participants performed static and dynamic unilateral knee extensions. BAP and PIP were measured before, and at 1, 2, 24, 48, and 72 hr after exercise. PIP increased at 24 hr after a static knee extension exercise, whereas BAP did not change during the experimental period. We found no changes in these markers after dynamic exercise. These results imply that type I collagen synthesis in tendons increases after static exercise. 相似文献
14.
After controlling for differences in gender, educational achievement, and exercise duration among a sample of 7,248 Americans 18-34 years old, we found that runners-joggers-fast walkers (RJWs) and tennis players were less likely to be obese, smoke, consume large quantities of alcohol, and drive without seat belts than those who participate in team and an aggregate of other sports. These behavioral differences might be explained by imprecise data, intervening variables such as exercise intensity, or other variables that were not measured. But a more interesting explanation is that running-jogging-fast walking and playing tennis are integral components of healthy lifestyles, and team sports and some other exercise behaviors are part of riskier ways of living. No consistent association was found between duration of exercise and behavioral risk. 相似文献
15.
The purpose of this study was to determine the effects of plyometric exercise on unilateral balance performance. Nine healthy adults performed baseline measurements on the dominant limb that consisted of: a 20-s unilateral stability test on a tilt balance board, where a higher stability index represented deterioration in balance performance; isokinetic plantar flexion torque at 0.52 and 3.14 rad s(-1); muscle soreness in the calf region; and resting plantar flexion angle. Plyometric exercise consisted of 200 counter-movement jumps designed to elicit symptoms of muscle damage, after which baseline measurements were repeated at 30 min, 24, 48, and 72 h. Perceived muscle soreness of the calf region increased significantly following the plyometric exercise protocol (F(4,32) = 17.24, P < 0.01). Peak torque was significantly reduced after the plyometric exercise protocol (F(4,32) = 7.49, P < 0.05), with greater loss of force at the lower angular velocity (F(4,32) = 3.46, P < 0.05), while resting plantar flexion angle was not significantly altered compared with baseline values (P > 0.05). The stability index was significantly increased (F(4,32) = 3.10, P < 0.05) above baseline (mean 2.3, s = 0.3) at 24 h (3.3, s = 0.4), after which values recovered. These results indicate that there is a latent impairment of balance performance following a bout of plyometric exercise, which has implications for both the use of skill-based activities and for increased injury risk following high-intensity plyometric training. 相似文献
16.
健走运动对绝经后妇女雌激素及血脂的影响 总被引：2，自引：0，他引：2
为探讨健走运动对绝经后妇女雌激素水平和血脂代谢的影响,将40名绝经后妇女随机分为运动组和对照组。指导运动组23名妇女进行为期6个月的健走运动,实验前后分别测定两组雌二醇(E2)、孕酮(P)水平和甘油三酯(TG)、总胆固醇(TC)、高密度脂蛋白胆固醇(HDL-C)和低密度脂蛋白胆固醇(LDL-C)指标。结果表明运动组的妇女于运动后E2、P明显升高,TG、TC、LDL-C明显下降,HDL-C水平明显提高,与运动前以及对照组相比,有显著性差异(P<0.05)。运动后E2与TG、TC、LDL-C呈明显负相关。 相似文献
17.
目的:探讨健步走运动锻炼对糖耐量减低(IGT)患者血清脂联素、内皮依赖性血管舒张功能的影响。方法:对41名糖耐量减低患者随机分为健步走组20名、对照组21名,受试者采取24周运动处方的锻炼。运动干预前、后测定身体成分、脂联素(Adiponectin)、空腹血糖、餐后2h血糖和空腹胰岛素,计算胰岛素抵抗指数(HOMA-IR),并采用高分辨血管外超声法检测肱动脉血流介导的内皮依赖性血管舒张功能(EDD)和硝酸甘油介导的内皮非依赖性血管舒张功能(EID)。结果:1)24周运动干预后,健步走组体脂%、腰围、腰臀围比、餐后2h血糖、空腹胰岛素、HOMA-IR均明显下降,血脂联素水平升高,内皮依赖性血管舒张功能明显改善;2)脂联素变化量的多元逐步回归分析显示出2个预测变量:体脂%、腰围的变化量。结论:对IGT患者进行健步走运动干预可升高血清脂联素水平,改善内皮依赖性血管舒张功能。 相似文献
18.
Biochemical markers of inflammation are emerging as new predictors of risk of cardiovascular disease (CVD) and may alter acutely with exercise. Few studies have been conducted on the effects of walking on these markers or whether different walking intensities elicit varied effects. As there is growing interest in modifiable lifestyle factors such as walking to reduce CVD risk, these inflammatory responses warrant investigation. The aim of this study was to compare the effects of walking at 50% versus 70% of predicted maximal heart rate on C-reactive protein (CRP), plasma fibrinogen, and triglycerides in sedentary post-menopausal women. Twelve post-menopausal women (mean age 58 years, s +/-6; stature 1.62 m, s+/-0.06; body mass 66.8 kg, s +/-6.2) completed two 30-min treadmill walks in a randomized cross-over design. Fasted blood samples were taken (for the determination of plasma fibrinogen, CRP, and lipids) before, immediately after, and 1 and 24 h after exercise. Triglyceride concentrations decreased from pre-exercise to 24 h post exercise at both walking intensities (time x group interaction, P < 0.05). No significant effects were observed for plasma fibrinogen, CRP, total cholesterol, low-density or high-density lipoprotein cholesterol (time x group interaction, P > 0.05). The results of this study suggest that fasting plasma triglycerides are decreased on the morning after 30 min of brisk walking at either 50% or 70% of maximal heart rate (moderate and vigorous intensity). 相似文献
19.
Larry A. Tucker 《Journal of sports sciences》2020,38(9):1026-1035
ABSTRACTThe length of telomeres is an objective measure of biologic ageing. This study evaluated the extent minutes of walking per week are associated with leukocyte telomere length (LTL) in a random sample of 5,823 U.S. adults. The investigation was cross-sectional and data were obtained from the National Health and Nutrition Examination Survey (NHANES). LTL was measured by the quantitative polymerase chain reaction method. Walking minutes was calculated from walking frequency and duration measures. Results showed that for each year of chronological age, telomeres were 15.6 base pairs shorter (P < 0.0001). With walking minutes and LTL treated as continuous variables, the relationship was quadratic, not linear (F = 11.2, P = 0.0023). With walking time divided into three categories, adults who performed ≥ 150 minutes of walking per week had longer telomeres than those who did no regular walking, and those who did some, but less than the recommendation (F = 5.0, P = 0.0137). Regular walkers were estimated to have a biologic ageing advantage associated with 6.5–7.6 years less biologic ageing compared to non-walkers, after adjusting for covariates. Additional investigations designed to study causality and the mechanisms associated with the walking and LTL relationship are needed. 相似文献
20.
细胞因子白介素-8(IL-8)与运动及机体的炎性反应有关。为观察IL-8在划船训练后的动态变化,选取有经验的划船运动员16人,随机平分为大负荷训练组(exercise group,E)及安静对照组(control group,C),训练前及训练后即刻、0.5 h1、h、10 h2、4 h测血浆IL-8及血乳酸(HL)浓度。结果发现:大负荷运动后血HL升高,但24 h内恢复;而血IL-8在运动后24 h内均显著升高(P<0.01)。提示在评定运动的负荷强度时,血HL反映骨骼肌能量代谢的变化;而IL-8作为与免疫有关的内分泌因子,能反映骨骼肌的内分泌及机体免疫功能的改变,将它们综合起来评定运动训练的负荷强度会更科学。 相似文献