Search Results

You are looking at 1 - 10 of 399 items for :

  • "intervention study" x
Clear All
Restricted access

Ilca M.S. Diniz, Maria de Fátima S. Duarte, Karen G. Peres, Elusa S.A. de Oliveira and Angélia Berndt

Objective:

The objective of this study was to assess the effectiveness of an educational intervention on active commuting by bicycle.

Methods:

An intervention study with workers from a metallurgical industry in Santa Catarina state, Brazil was carried out in 2011. A total of 464 individuals were placed in the intervention group (IG) and 468 in the control group (CG). The intervention consisted of strategies based on the transtheoretical model and stages of behavior change. The intervention group took part in activities for 6 months, including 23 meetings. The statistical analysis included intergroup comparison (IG × CG) at baseline and after the intervention. Intragroup analysis was performed 6 months after the intervention. Student’s t-test, chi-square, and McNemar tests were used to analyze the data.

Results:

Of the original total, 876 individuals (94%) participated in the study. The proportion of participants that used bicycles to commute to work (IG) increased significantly from baseline (45.3%) to the final interventional period (47.5%). No difference was found between the CG and the IG group after the interventional period.

Conclusion:

We suggest taking these findings into consideration in further studies to understand better the role of educational intervention on active commuting by bicycle.

Restricted access

Shijun Zhu, Eun-Shim Nahm, Barbara Resnick, Erika Friedmann, Clayton Brown, Jumin Park, Jooyoung Cheon and DoHwan Park

team has implemented a Bone Power Intervention to improve older adults’ participation in bone-health behaviors such as exercise and calcium intake ( Nahm et al., 2015a , 2015b ). The intervention study was approved by the institutional review boards at the University of Maryland, Baltimore, and the U

Restricted access

Yvonne Kahlin, Suzanne Werner and Marie Alricsson

Background:

Physical activity and sport participation often decline during adolescence.

Aim:

To investigate if physical exercise during 6 months could lead to a positive behavior of physical activity, improve physical fitness and self-related health in physically inactive female high school students.

Methods:

A prospective cluster-randomized controlled intervention study included 104 physically inactive female high school students, 60 in an intervention group and 44 controls. At baseline there were no group differences regarding self-related health. The intervention group exercised at least once per week. A questionnaire and physical fitness tests were used for evaluation, at baseline and 6 months later.

Results:

The intervention group improved their self-related health compared with the controls (P = .012). When divided into a regular (n = 27) and an irregular training group (n = 33) the regular training group improved their self-related health compared with the controls, while the irregular training group did not differ from the other groups. Maximal oxygen consumption was improved in the intervention group compared with the controls (P < .001). No group differences were found in muscle strength and endurance.

Conclusion:

Physical exercise at least once per week during 6 months improved physical fitness (maximal oxygen consumption) and self-related health in physically inactive female high school students.

Restricted access

Melissa Hodge, Mary Hovinga, Kelley Gabriel, Linda Snetselaar, John Shepherd, Linda Van Horn, Victor Stevens, Brian Egleston, Alan Robson, Seungyoun Jung and Joanne Dorgan

This study prospectively investigates associations between youth moderate-to-vigorous-intensity physical activity (MVPA) and body composition in young adult women using data from the Dietary Intervention Study in Children (DISC) and the DISC06 Follow-Up Study. MVPA was assessed by questionnaire on 5 occasions between the ages 8 and 18 years and at age 25-29 years in 215 DISC female participants. Using whole body dual-energy x-ray absorptiometry (DXA), overall adiposity and body fat distribution were assessed at age 25-29 years by percent body fat (%fat) and android-to-gynoid (A:G) fat ratio, respectively. Linear mixed effects models and generalized linear latent and mixed models were used to assess associations of youth MVPA with both outcomes. Young adult MVPA, adjusted for other young adult characteristics, was significantly inversely associated with young adult %fat (%fat decreased from 37.4% in the lowest MVPA quartile to 32.8% in the highest (p-trend = 0.02)). Adjusted for youth and young adult characteristics including young adult MVPA, youth MVPA also was significantly inversely associated with young adult %fat (β=-0.40 per 10 MET-hrs/wk, p = .02) . No significant associations between MVPA and A:G fat ratio were observed. Results suggest that youth and young adult MVPA are important independent predictors of adiposity in young women.

Restricted access

Thiago R.S. Tenório, P. Babu Balagopal, Lars B. Andersen, Raphael M. Ritti-Dias, James O. Hill, Mara C. Lofrano-Prado and Wagner L. Prado

to the discrepancy found in the current study and various previous studies. The results from the current study showed only negligible changes in markers of endothelial function such as sICAM-1 and sVCAM-1 similar to several previous lifestyle-based intervention studies ( 30 , 41 ), but contrary to

Restricted access

Kirsty A. Fairbairn, Ingrid J.M. Ceelen, C. Murray Skeaff, Claire M. Cameron and Tracy L. Perry

-controlled intervention study, in which the players were randomly allocated 1:1 to receive either a 50,000 IU (1.25 mg) cholecalciferol tablet (pharmaceutical grade: Cal.D.Forte, PSM Healthcare, Auckland NZ), or a similar placebo (NZ Nutritionals, Christchurch NZ) once a fortnight for 11–12 weeks. Players were not

Restricted access

Felix Cronholm, Björn E. Rosengren, Caroline Karlsson and Magnus K. Karlsson

Background:

The activity-stat theory infers that total physical activity (PA) in children is constant, independent of environmental interventions.

Methods:

We conducted a 3-year prospective population-based controlled PA intervention study including, at baseline, 7- to 9-year-old children (66 boys, 40 girls in the intervention and 50 boys, 38 girls in the control group). PA was increased in the intervention group from 60 to 200 minutes/week, while the controls maintained 60 minutes/week. We registered weekly duration of total PA and leisure-time PA and daily duration of sedentary activities, through questionnaires at baseline and 2 and 3 years after baseline.

Results:

Between intervention and control groups PA was similar before intervention start. After intervention start, total PA in both genders was increased during the entire period (P-values adjusted for age and Tanner stage at follow-up between 0.001 and 0.002). Duration of sedentary activities was unchanged with no group differences. Children in the intervention group changed their behavior so that they also achieved more leisure-time PA.

Conclusions:

A 3-year school-based PA intervention program in prepubertal children increases the duration of total PA without increasing the duration of sedentary activities, and the program seems to initiate more PA during leisure-time. Our results refute the activity-stat theory.

Restricted access

Yara Fidelix, Mara C. Lofrano-Prado, Leonardo S. Fortes, James O. Hill, Ann E. Caldwell, João P. Botero and Wagner L. do Prado

.71 (9.49) 37.43 (11.37)* .92 <.01 .21  LIG 43.86 (8.34) 40.92 (11.12)* Abbreviations: G, group; HIG, high-intensity group; LIG, low-intensity group; T, time. * P  < .05 (vs baseline). Discussion To the best of our knowledge, this is one of very few randomized exercise intervention studies investigating

Restricted access

Anass Arrogi, Astrid Schotte, An Bogaerts, Filip Boen and Jan Seghers

recruitment involves a risk of contamination as participants in both study groups might have influenced each other. This risk of contamination is not uncommon in field-based workplace intervention studies. 2 Future studies should minimize contamination by recruiting study groups from different work

Restricted access

You Fu and Ryan D. Burns

drastically decreased in the comparison group; however, this difference was not statistically significant after alpha level adjustment. Other AVG intervention studies have shown a lack of physical activity increase in the intervention group. 1 , 11 , 12 , 28 This study not only supports previous findings