Trial of print and telephone delivered interventions to influence walking

Pilot RCT Testing A Mailing About Sleeping Pills and Cognitive Behavioral Therapy for Insomnia: Impact on Benzodiazepines and Z-Drugs

OBJECTIVES

The aim is to pilot a low-touch program for reducing benzodiazepine receptor agonist (BZRA; benzodiazepines, z-drugs) prescriptions among older veterans.

METHODS

Pilot randomized controlled trial consists of 2,009 veterans aged ≥ 65 years who received BZRA prescriptions from a Veterans Health Administration pharmacy (Colorado or Montana) during the prior 18 months. Active: Arm 1 was a mailed brochure about BZRA risks that also included information about a free, online cognitive behavioral therapy for the insomnia (CBTI) program. Arm 2 was a mailed brochure (same as arm 1) and telephone reinforcement call. Control: Arm 3 was a mailed brochure without insomnia treatment information. Active BZRA prescriptions at follow-up (6 and 12 months) were measured.

RESULTS

In logistic regression analyses, the odds of BZRA prescription at 6- and 12-month follow-ups were not significantly different for arm 1 or 2 (active) versus arm 3 (control), including models adjusted for demographics and prescription characteristics (p-values >0.36).

CONCLUSIONS

Although we observed no differences in active BZRA prescriptions, this pilot study provides guidance for conducting a future study, indicating a need for a more potent intervention. A full-scale trial testing an optimized program would provide conclusive results.

CLINICAL IMPLICATIONS

Mailing information about BZRA risks and CBTI did not affect BZRA prescriptions.

The effect of initial support on fitness center use in new fitness center members. A randomized controlled trial

This provider and participant blinded parallel-group randomized controlled trial aimed to investigate if initial support given to new members via telephone and e-mail, compared to self-directed use, had an effect on booking with a fitness trainer, number of visits to the center, and membership duration. Participants included 356 new members, 174 randomized to the intervention group, and 182 to the control group. The intervention group received support to use the fitness center facilities through two phone calls and one e-mail over the first eight weeks of their membership. The control group got usual practice, which is self-directed use. Participants in the intervention group were more likely to book at least one session with a fitness trainer during the first six months (odds ratio 1.6, 95% confidence interval (CI) 1.0-2.5). However, the intervention did not influence the number of visits (mean difference after four years -11.7 days, 95% CI -34.8 to 11.3) or time to membership termination during the follow-up period (hazard ratio 1.1, 95% CI 0.8-1.3). In conclusion, initial support to use the fitness center facilities given to new fitness center members via telephone and e-mail increased the proportion of bookings with a fitness trainer during the first months of the membership, but it did not have an effect on the number of visits or membership termination during four years.

Interpreting population reach of a large, successful physical activity trial delivered through primary care

Background

Failure to include socio-economically deprived or ethnic minority groups in physical activity (PA) trials may limit representativeness and could lead to implementation of interventions that then increase health inequalities. Randomised intervention trials often have low recruitment rates and rarely assess recruitment bias. A previous trial by the same team using similar methods recruited 30% of the eligible population but was in an affluent setting with few non-white residents and was limited to those over 60 years of age.

Methods

PACE-UP is a large, effective, population-based walking trial in inactive 45-75 year-olds that recruited through seven London general practices. Anonymised practice demographic data were available for all those invited, enabling investigation of inequalities in trial recruitment. Non-participants were invited to complete a questionnaire.

Results

From 10,927 postal invitations, 1150 (10.5%) completed baseline assessment. Participation rate ratios (95% CI), adjusted for age and gender as appropriate, were lower in men 0.59 (0.52, 0.67) than women, in those under 55 compared with those ≥65, 0.60 (0.51, 0.71), in the most deprived quintile compared with the least deprived 0.52 (0.39, 0.70) and in Asian individuals compared with whites 0.62 (0.50, 0.76). Black individuals were equally likely to participate as white individuals. Participation was also associated with having a co-morbidity or some degree of health limitation. The most common reasons for non-participation were considering themselves as being too active or lack of time.

Conclusions

Conducting the trial in this diverse setting reduced overall response, with lower response in socio-economically deprived and Asian sub-groups. Trials with greater reach are likely to be more expensive in terms of recruitment and gains in generalizability need to be balanced with greater costs. Differential uptake of successful trial interventions may increase inequalities in PA levels and should be monitored.

Trial registration

ISRCTN.com ISRCTN98538934. Registered 2nd March 2012.

Non-face-to-face physical activity interventions in older adults: a systematic review

Physical activity is effective in preventing chronic diseases, increasing quality of life and promoting general health in older adults, but most older adults are not sufficiently active to gain those benefits. A novel and economically viable way to promote physical activity in older adults is through non-face-to-face interventions. These are conducted with reduced or no in-person interaction between intervention provider and program participants. The aim of this review was to summarize the scientific literature on non-face-to-face physical activity interventions targeting healthy, community dwelling older adults (≥ 50 years). A systematic search in six databases was conducted by combining multiple key words of the three main search categories "physical activity", "media" and "older adults". The search was restricted to English language articles published between 1st January 2000 and 31st May 2013. Reference lists of relevant articles were screened for additional publications. Seventeen articles describing sixteen non-face-to-face physical activity interventions were included in the review. All studies were conducted in developed countries, and eleven were randomized controlled trials. Sample size ranged from 31 to 2503 participants, and 13 studies included 60% or more women. Interventions were most frequently delivered via print materials and phone (n=11), compared to internet (n=3) and other media (n=2). Every intervention was theoretically framed with the Social Cognitive Theory (n=10) and the Transtheoretical Model of Behavior Change (n=6) applied mostly. Individual tailoring was reported in 15 studies. Physical activity levels were self-assessed in all studies. Fourteen studies reported significant increase in physical activity. Eight out of nine studies conducted post-intervention follow-up analysis found that physical activity was maintained over a longer time. In the six studies where intervention dose was assessed the results varied considerably. One study reported that 98% of the sample read the respective intervention newsletters, whereas another study found that only 4% of its participants visited the intervention website more than once. From this review, non-face-to-face physical activity interventions effectively promote physical activity in older adults. Future research should target diverse older adult populations in multiple regions while also exploring the potential of emerging technologies.

Therapeutic mobilities: walking and 'steps' to wellbeing and health

There is now an extensive literature on therapeutic landscapes, those settings and places that can contribute to wellbeing and good health. Less attention has been paid to the therapeutic qualities of the act of moving from one place to another. The recent emergence of a significant mobilities 'turn' in social science is welcome, but this has as yet had relatively little to say about the consequences of mobility for health and wellbeing. This paper maps the relations between one form of mobility - walking - and wellbeing and health. Such relations may be theorised as 'therapeutic mobilities', a concept that sits comfortably alongside that of therapeutic landscapes. I explore three elements of such relations: activity; connection; and context. Although only one form of mobility is considered, the notion of therapeutic mobilities can be extended to other forms of travel.

Recruiting participants to walking intervention studies: a systematic review

PURPOSE

Most researchers who are conducting physical activity trials face difficulties in recruiting participants who are representative of the population or from specific population groups. Participants who are often the hardest to recruit are often those who stand to benefit most (the least active, from ethnic and other minority groups, from neighbourhoods with high levels of deprivation, or have poor health). The aim of our study was to conduct a systematic review of published literature of walking interventions, in order to identify the impact, characteristics, and differential effects of recruitment strategies among particular population groups.

METHODS

We conducted standard searches for studies from four sources, (i) electronic literature databases and websites, (ii) grey literature from internet sources, (iii) contact with experts to identify additional "grey" and other literature, and (iv) snowballing from reference lists of retrieved articles. Included studies were randomised controlled trials, controlled before-and-after experimental or observational qualitative studies, examining the effects of an intervention to encourage people to walk independently or in a group setting, and detailing methods of recruitment.

RESULTS

Forty seven studies met the inclusion criteria. The overall quality of the descriptions of recruitment in the studies was poor with little detail reported on who undertook recruitment, or how long was spent planning/preparing and implementing the recruitment phase. Recruitment was conducted at locations that either matched where the intervention was delivered, or where the potential participants were asked to attend for the screening and signing up process. We identified a lack of conceptual clarity about the recruitment process and no standard metric to evaluate the effectiveness of recruitment.

CONCLUSION

Recruitment concepts, methods, and reporting in walking intervention trials are poorly developed, adding to other limitations in the literature, such as limited generalisability. The lack of understanding of optimal and equitable recruitment strategies evident from this review limits the impact of interventions to promote walking to particular social groups. To improve the delivery of walking interventions to groups which can benefit most, specific attention to developing and evaluating targeted recruitment approaches is recommended.

Effectiveness of a home-based postal and telephone physical activity and nutrition pilot program for seniors

Objective. To evaluate the effectiveness of a 12-week home-based postal and telephone physical activity and nutrition pilot program for seniors. Methods. The program was delivered by mailed material and telephone calls. The main intervention consisted of a booklet tailored for seniors containing information on dietary guidelines, recommended physical activity levels, and goal setting. Dietary and walking activity outcomes were collected via a self-administered postal questionnaire pre- and postintervention and analysed using linear mixed regressions. Of the 270 seniors recruited, half were randomly selected for the program while others served as the control group. Results. The program elicited favourable responses. Postintervention walking for exercise/recreation showed an average gain of 27 minutes per week for the participants in contrast to an average drop of 5 minutes for the controls (P < .01). Little change was evident in errand walking for both groups. The intervention group (n = 114) demonstrated a significant increase in fibre intake (P < .01) but no reduction in fat intake (P > .05) compared to controls (n = 134). Conclusions. The participants became more aware of their health and wellbeing after the pilot program, which was successful in increasing time spent walking for recreation and improving fibre intake.

Living Well with Diabetes: a randomized controlled trial of a telephone-delivered intervention for maintenance of weight loss, physical activity and glycaemic control in adults with type 2 diabetes

BACKGROUND

By 2025, it is estimated that approximately 1.8 million Australian adults (approximately 8.4% of the adult population) will have diabetes, with the majority having type 2 diabetes. Weight management via improved physical activity and diet is the cornerstone of type 2 diabetes management. However, the majority of weight loss trials in diabetes have evaluated short-term, intensive clinic-based interventions that, while producing short-term outcomes, have failed to address issues of maintenance and broad population reach. Telephone-delivered interventions have the potential to address these gaps.

METHODS/DESIGN

Using a two-arm randomised controlled design, this study will evaluate an 18-month, telephone-delivered, behavioural weight loss intervention focussing on physical activity, diet and behavioural therapy, versus usual care, with follow-up at 24 months. Three-hundred adult participants, aged 20-75 years, with type 2 diabetes, will be recruited from 10 general practices via electronic medical records search. The Social-Cognitive Theory driven intervention involves a six-month intensive phase (4 weekly calls and 11 fortnightly calls) and a 12-month maintenance phase (one call per month). Primary outcomes, assessed at 6, 18 and 24 months, are: weight loss, physical activity, and glycaemic control (HbA1c), with weight loss and physical activity also measured at 12 months. Incremental cost-effectiveness will also be examined. Study recruitment began in February 2009, with final data collection expected by February 2013.

DISCUSSION

This is the first study to evaluate the telephone as the primary method of delivering a behavioural weight loss intervention in type 2 diabetes. The evaluation of maintenance outcomes (6 months following the end of intervention), the use of accelerometers to objectively measure physical activity, and the inclusion of a cost-effectiveness analysis will advance the science of broad reach approaches to weight control and health behaviour change, and will build the evidence base needed to advocate for the translation of this work into population health practice.

TRIAL REGISTRATION

ACTRN12608000203358.

Self-efficacy is associated with walking ability in persons with diabetes mellitus and peripheral arterial disease

Self-efficacy is a known predictor for behavior change. Little is known about the association of self-efficacy with walking ability in individuals with diabetes mellitus and peripheral arterial disease (PAD). The objective of this study was to determine the association of self-efficacy with walking ability in individuals with diabetes mellitus and PAD. In this cross-sectional study, baseline data were analyzed from individuals with diabetes mellitus type 1 or 2 and PAD who were enrolled in a walking intervention clinical trial. As part of the baseline assessment, individuals completed questionnaires to ascertain self-efficacy and co-existing illnesses. In addition, participants completed a treadmill walking test and a 6-minute walking test. A total of 145 individuals were enrolled (mean age 66.5 +/- 10.1 years) with diabetes mellitus and PAD; 45 (31%) were women. The mean ankle-bracial index was 0.70 (range - 0.18-2.20) and the mean glycosylated hemoglobin value was 7.1 (SD 1.2). The mean distance walked, as per the treadmill walking test, was 418 meters (SD 258) and the mean distance walked, as per the 6-minute walking test, was 272 meters (SD 74). As measured by the treadmill walking test and the 6-minute walking test, self-efficacy was associated with treadmill walking distance, coefficient 33.0 (95% CI 11.0, 55.1; p = 0.0036), and the 6-minute walking test, coefficient 10.4 (95% CI 3.0, 17.7; p = 0.0061), after adjusting for comorbidities, social habits, and disease severity. In conclusion, self-efficacy, a psychosocial mediator for behavior change, was significantly associated with walking ability in individuals with diabetes mellitus and PAD. Future studies should determine the benefits of targeting self-efficacy to improve adherence to walking therapy in patients with PAD.

A randomised controlled trial and cost-effectiveness evaluation of "booster" interventions to sustain increases in physical activity in middle-aged adults in deprived urban neighbourhoods

Background

Systematic reviews have identified a range of brief interventions which increase physical activity in previously sedentary people. There is an absence of evidence about whether follow up beyond three months can maintain long term physical activity. This study assesses whether it is worth providing motivational interviews, three months after giving initial advice, to those who have become more active.

Methods/Design

Study candidates (n = 1500) will initially be given an interactive DVD and receive two telephone follow ups at monthly intervals checking on receipt and use of the DVD. Only those that have increased their physical activity after three months (n = 600) will be randomised into the study. These participants will receive either a "mini booster" (n = 200), "full booster" (n = 200) or no booster (n = 200). The "mini booster" consists of two telephone calls one month apart to discuss physical activity and maintenance strategies. The "full booster" consists of a face-to-face meeting with the facilitator at the same intervals. The purpose of these booster sessions is to help the individual maintain their increase in physical activity. Differences in physical activity, quality of life and costs associated with the booster interventions, will be measured three and nine months from randomisation. The research will be conducted in 20 of the most deprived neighbourhoods in Sheffield, which have large, ethnically diverse populations, high levels of economic deprivation, low levels of physical activity, poorer health and shorter life expectancy. Participants will be recruited through general practices and community groups, as well as by postal invitation, to ensure the participation of minority ethnic groups and those with lower levels of literacy. Sheffield City Council and Primary Care Trust fund a range of facilities and activities to promote physical activity and variations in access to these between neighbourhoods will make it possible to examine whether the effectiveness of the intervention is modified by access to community facilities. A one-year integrated feasibility study will confirm that recruitment targets are achievable based on a 10% sample.

Discussion

The choice of study population, study interventions, brief intervention preceding the study, and outcome measure are discussed.

Trial Registration

Current Controlled Trials: ISRCTN56495859; ClinicalTrials.gov: NCT00836459.

The effectiveness of distance interventions for increasing physical activity: a review

OBJECTIVE

Evaluate the effectiveness of distance physical activity interventions to establish intervention features that are key to success.

DATA SOURCE

Computerized searches for randomized controlled trials (RCTs) of distance physical activity interventions and visual scans of reference lists were performed between March 2004 and July 2006.

STUDY INCLUSION AND EXCLUSION CRITERIA

Studies were included if they (1) employed a randomized controlled design, (2) encouraged physical activity in adults, and (3) had no face-to-face contact between participants and researchers or health educators.

DATA EXTRACTION

Twenty-two studies were found that met the inclusion criteria. Authors assessed the quality of the studies and coded articles according to key intervention features.

DATA SYNTHESIS

This review is a systematic narrative review. Heterogeneity and poor study quality made formal meta-analysis inappropriate. Nevertheless, effect sizes were calculated for studies comparing intervention with control.

RESULTS

Overall, distance interventions increased physical activity in the short term (between-group effect size range, -.2 to .45). Print medium plus telephone contact was the most effective delivery mode.

CONCLUSIONS

Poor study quality prevented firm conclusions. However, distance interventions were found to promote physical activity in the short term for some populations. This review provided limited support for the efficacy of distance exercise interventions and revealed limitations of the extant literature. Expansion of RCT research into distance approaches to promoting physical activity is warranted.

Measuring Exposure to Health Messages in Community-Based Intervention Studies: A Systematic Review of Current Practices

Accurately measuring exposure is critical to all intervention studies. The present review examines the extent to which best practices in exposure assessment are adhered to in community-based prevention and education studies. A systematic literature review was conducted examining community-based studies testing communication interventions, published in 2003-2007. Of 663 studies identified, 54 met all inclusion criteria and were reviewed for type of exposure assessment conducted (if any), use of exposure data in study analyses, and discussion of biases related to exposure assessment. Although a majority of studies ( n = 38; 70%) assessed exposure, most of these used only a simple dichotomous measure ( n = 31; 82%), less than half used exposure data to adjust intervention effects ( n = 16; 42%), and only six (16%) addressed selective exposure as a possible source of bias. There is substantial room for improvement in measurement and analysis of exposure to communication in community-based disease prevention studies.

A tailored print-based physical activity intervention for patients with type 2 diabetes

OBJECTIVE

To examine the effects of a tailored, print-based intervention for promoting physical activity among patients with type 2 diabetes.

METHOD

This randomized controlled trial was conducted 2006-2007 in Tallahassee, FL. Patients diagnosed with type 2 diabetes (N=85; mean age=57.1 years; 74.1% Caucasian) were recruited from a community diabetes clinic. The four-week intervention was tailored to participants' current activity levels, motivational readiness, self-efficacy, and other relevant psychosocial constructs. Primary outcomes included self-reported physical activity and physical activity stage of change.

RESULTS

Compared with usual care, participants receiving the intervention were more likely to progress in their physical activity stage of change between baseline and month one (OR=3.2, 95% CI 1.0-10.3) and were more likely to be in the Action or Maintenance stages at month one (OR=5.6, 95% CI 1.7-18.3). The change in weekly activity among intervention participants was 22 min greater than those receiving usual care, although this represented a non-significant difference, p=0.22.

CONCLUSION

While this print-based intervention has the potential to reach a large audience and produced improvements in relevant psychosocial constructs, more intensive programs may be needed to achieve greater behavioral improvements.

Development of a nutrition and physical activity booklet to engage seniors

BACKGROUND

This paper describes the development and process evaluation of an interactive booklet aimed at motivating older adults to improve their nutrition and physical activity.

FINDINGS

The booklet was developed in consultation with seniors via focus groups, individual interviews and self administered questionnaires. The booklet was disseminated to a group of 114 seniors as the main component of a 12-week intervention program. Process evaluation was conducted during and at the end of the intervention period.A large proportion of participants (86%) were engaged in the program in that they had, as a minimum, read the booklet. The majority of the participants found the booklet provided them with useful and interesting advice in an easy-to-read and informative manner. Three quarters (76%) reported the materials to be motivating and increased their awareness of nutrition and physical activity, while 79% intended to continue with changes to their physical activity and diet after the program concluded.

Brief Image-based Health Behavior Messages for Adolescents and Their Parents

This study tested the efficacy of brief image-based print mediated parent/caregiver and adolescent messages integrating physical activity with alcohol use avoidance. A total of 684 high school students were randomly assigned to either the parent postcard or adolescent flyer arm, with baseline and four-month post-intervention data collections. A significant repeated measures interaction (group × time) was found (F(4,344)=2.48, p=.04), with univariate tests showing less alcohol use frequency and problems (p's<.05) among adolescents exposed to parent materials. Repeated measures factorial MANOVAs for group × time × prior current drug use were significant, with drug using adolescents receiving parent print messages showing less alcohol initiation and frequency, and marijuana initiation and frequency (p's<.05). Very brief print materials sent to parents/caregivers may hold some promise for influencing substance use among adolescents, particularly those already using drugs.

Pilot study of an individually tailored educational program by mail to promote healthy weight in Chinese American children

PURPOSE

To test the feasibility and impact of an individually tailored educational intervention to promote healthy weight in Chinese American children (ages 8-10).

DESIGN

A pre- and post-test study (N = 57) using standardized instruments to measure children's usual food choices, knowledge of nutrition and physical activity needs, and time spent engaging in physical and sedentary activities.

RESULTS

We found improvement after the intervention in all three areas.

PRACTICE IMPLICATIONS

Healthcare providers need to provide parents and children with specific recommendations regarding children's weight statuses, dietary intake, and levels of activity.

Interventions to increase walking behavior

Walking is the most prevalent and preferred method of physical activity for both work and leisure purposes, thus making it a prime target for physical activity promotion interventions. We identified 14 randomized controlled trials, which tested interventions specifically targeting and assessing walking behavior. Results show that among self-selected samples, intensive interventions can increase walking behavior relative to controls. Brief telephone prompts appear to be as effective as more substantial telephone counseling. Although more research is needed, individual studies support prescriptions to walk 5-7 versus 3-5 d.wk and at a moderate (vs vigorous) intensity pace, with no differences in total walking minutes when single or multiple daily walking bouts are prescribed. Mediated interventions delivering physical activity promotion materials through non-face-to-face channels may be ideal for delivering walking promotion interventions and have shown efficacy in promoting overall physical activity, especially when theory-based and individually tailored. Mass media campaigns targeting broader audiences, including those who may not intend to increase their physical activity, have been successful at increasing knowledge and awareness about physical activity but are often too diffuse to successfully impact individual behavior change. Incorporating individually tailored programs into broader mass media campaigns may be an important next step, and the Internet could be a useful vehicle.

Effect of telephone counseling on physical activity for low-active older people in primary care: a randomized, controlled trial

OBJECTIVES

To assess the long-term effectiveness of a telephone counseling intervention on physical activity and health-related quality of life in low-active older adults recruited through their primary care physician.

DESIGN

Randomized, controlled trial.

SETTING

Three primary care practices from different socioeconomic regions of Auckland, New Zealand.

PARTICIPANTS

One hundred and eighty-six low-active adults (aged 65) recruited from their primary care physicians' patient databases.

INTERVENTION

Eight telephone counseling sessions over 12 weeks based on increasing physical activity. Control patients received usual care.

MEASUREMENTS

Change in physical activity (as measured using the Auckland Heart Study Physical Activity Questionnaire) and quality of life (as measured using the Short Form-36 Health Survey (SF-36)) over a 12-month period.

RESULTS

Moderate leisure physical activity increased by 86.8 min/wk more in the intervention group than in the control group (P=.007). More participants in the intervention group reached 2.5 hours of moderate or vigorous leisure physical activity per week after 12 months (42% vs 23%, odds ratio=2.9, 95% confidence interval=1.33-6.32, P=.007). No differences on SF-36 measures were observed between the groups at 12 months.

CONCLUSION

Telephone-based physical activity counseling is effective at increasing physical activity over 12 months in previously low-active older adults.

A field test of a web-based workplace health promotion program to improve dietary practices, reduce stress, and increase physical activity: randomized controlled trial

BACKGROUND

Most work sites engage in some form of health promotion programming designed to improve worker health and reduce health care costs. Although these programs have typically been delivered through combinations of seminars and print materials, workplace health promotion programs are increasingly being delivered through the Internet.

OBJECTIVE

The purpose of this research was to evaluate the effectiveness of a Web-based multimedia health promotion program for the workplace, designed to improve dietary practices, reduce stress, and increase physical activity.

METHODS

Using a randomized controlled trial design with pretest-posttest comparisons within each group, 419 employees of a human resources company were randomly assigned to the Web-based condition or to a condition that provided print materials on the same topics. All subjects were assessed at pretest and posttest through an online questionnaire containing multiple measures of health behavior and attitudes. The test period was 3 months. Questionnaire data were analyzed mainly by analysis of covariance and t tests.

RESULTS

Retention rates were good for both groups-85% for the Web-based group and 87% for the print group. Subjects using the Web-based program performed significantly better than the print group on Attitudes Toward a Healthful Diet (F(1,415) = 7.104, P = .008) and Dietary Stage of Change (F(1,408) = 6.487, P = .01), but there were no significant group differences on the five other dietary measures. Both groups also showed improvement from pretest to posttest on most dietary measures, as indicated by significant t tests. Within the Web-based group, dosage analyses showed significant effects of the number of times the subject accessed the program on measures of Dietary Self-Efficacy (F(2,203) = 5.270, P = .003), Attitudes Toward a Healthful Diet (F(2,204) = 2.585, P = .045), and Dietary Stage of Change (F(2,200) = 4.627, P = .005). No significant differences were found between the two groups on measures of stress or physical activity, although t tests of pretest-posttest changes indicated that both groups improved on several of these measures. The Web-based group gave significantly higher ratings to the program materials than the print group on all health topics and in their overall evaluation (F(1,410) = 9.808, P = .002).

CONCLUSIONS

The Web-based program was more effective than print materials in producing improvements in the areas of diet and nutrition but was not more effective in reducing stress or increasing physical activity. The higher ratings given to the Web-based program suggest that workers preferred it to the print materials. Both groups showed numerous pretest-posttest improvements in all health topics, although such improvements might be attributable in part to a Hawthorne effect. Results suggest that a multimedia Web-based program can be a promising means of delivering health promotion material to the workforce, particularly in the area of diet and nutrition.

Telephone interventions for physical activity and dietary behavior change: a systematic review

BACKGROUND

Given the epidemic of lifestyle-related chronic diseases, building the evidence base for physical activity and dietary behavior change interventions with a wide population reach is of critical importance. For this purpose, telephone counseling interventions have considerable potential.

PURPOSE

To systematically review the literature on interventions for physical activity and dietary behavior change in which a telephone was the primary method of intervention delivery, with a focus on both internal and external validity.

METHODS

A structured search of PubMed, Medline, and PsycInfo was conducted for studies published in English from 1965 to January 2006. Studies targeted primary or secondary prevention in adults, used randomized designs, and included physical activity and/or dietary behavior outcomes.

RESULTS

Twenty-six studies were reviewed, including 16 on physical activity, six on dietary behavior, and four on physical activity plus dietary behavior. Twenty of 26 studies reported significant behavioral improvements. Positive outcomes were reported for 69% of physical activity studies, 83% of dietary behavior studies, and 75% of studies addressing both outcomes. Factors associated with positive outcomes appear to be the length of intervention and the number of calls, with interventions lasting 6 to 12 months and those including 12 or more calls producing the most favorable outcomes. Data on the representativeness of participants, implementation of calls, and costs were reported much less frequently.

CONCLUSIONS

There is now a solid evidence base supporting the efficacy of physical activity and dietary behavior change interventions in which the telephone is the primary intervention method. Thus, research studies on broader dissemination are necessary, and should address questions relevant to the translation of this body of work into population health practice.

Interventions for promoting physical activity

BACKGROUND

Little is known about the effectiveness of strategies to enable people to achieve an increase in their physical activity.

OBJECTIVES

To assess the effects of interventions for promoting physical activity in adults aged 16 years and older, not living in an institution.

SEARCH STRATEGY

We searched CENTRAL (Issue 4, 2001), MEDLINE, EMBASE, CINAHL, PsychLIT, BIDS ISI, SPORTDISCUS, SIGLE, SCISEARCH (from earliest date available to December 2001) and reference lists of articles.

SELECTION CRITERIA

Randomised, controlled, trials comparing different interventions to encourage sedentary adults not living in an institution to become physically active. Studies required a minimum of six months follow up from the start of the intervention to the collection of final data and either used an intention to treat analysis or, failing that, had no more than 20% loss to follow up.

DATA COLLECTION AND ANALYSIS

At least two reviewers independently assessed each study quality and extracted data. Study authors were contacted for additional information where necessary. Standardised mean differences and 95% confidence intervals were calculated for continuous measures of self reported physical activity and cardio-respiratory fitness. For studies with dichotomous outcomes, odds ratios and 95% confidence intervals were calculated.

MAIN RESULTS

The effect of interventions on self reported physical activity (11 studies; 3940 participants) was positive and moderate, with a pooled standardised mean difference of 0.31 (95% CI 0.12 to 0.50), as was the effect on cardio-respiratory fitness (7 studies; 1406 participants) pooled SMD 0.4 (95% CI 0.09 to 0.70). The effect of interventions in achieving a predetermined threshold of physical activity (6 studies; 2313 participants) was not significant with an odds ratio of 1.30 (95% CI 0.87 to 1.95). There was significant heterogeneity in the reported effects as well as heterogeneity in characteristics of the interventions. The heterogeneity in reported effects was reduced in higher quality studies, when physical activity was self-directed with some professional guidance and when there was on-going professional support.

AUTHORS' CONCLUSIONS

Our review suggests that physical activity interventions have a moderate effect on self reported physical activity and cardio-respiratory fitness, but not on achieving a predetermined level of physical activity. Due to the clinical and statistical heterogeneity of the studies, only limited conclusions can be drawn about the effectiveness of individual components of the interventions. Future studies should provide greater detail of the components of interventions.

Walkability and self-rated health in primary care patients

Background

The objective of this study was to investigate the relationship between perceived walkability and overall self-rated health among patients who use community-based clinics.

Methods

A cross-sectional survey was distributed to a convenience sample in three community clinics. Forms were completed by 793 clinic patients. Multiple logistic regression analysis was to control for the effects of demographic variables and lifestyles.

Results

Perceiving the availability of places to walk was related to better self-rated health. The most important places were work (OR = 3.2), community center (OR = 3.12), park (OR = 2.45) and day care (OR = 2.05). Respondents who said they had zero (OR = .27) or one (OR = .49) place to walk were significantly less healthy than persons who said they had five or more places to walk.

Conclusion

Persons who perceived that they had no place to walk were significantly less healthy than persons who thought they had at least one place to walk (OR = .39). Support for walkable neighborhoods and education of patients about options for walking may be in the best interests of community medicine patients.