A self-determination process model of physical activity adoption in the context of a randomized controlled trial

Objective: The PA Counseling (PAC) trial tested a primary care intervention using Self-Determination Theory (SDT) as the guiding framework. This paper presents specific results related to SDT constructs in a physical activity (PA) context. Specifically, whether patients who received both brief autonomy supportive PA counseling from their health-care provider and intensive (3 month) autonomy supportive counseling from a PA counselor would report greater levels of autonomy support, autonomous motivation, perceived competence and PA adoption, than patients receiving only brief counseling. In addition, we tested Williams’ SDT process model in the context of PA adoption.Method: Measures of autonomous motivation and perceived competence for PA were measured at baseline and 6 weeks. PA was assessed at baseline and 13 weeks. An autonomy support index was calculated by multiplying minutes of counseling by perceptions of autonomy support. Group differences in autonomy support, autonomous motivation, perceived competence and PA were examined. The SDT process model of PA adoption was tested via path analysis.Results: The results showed higher autonomy support and autonomous motivation at 6 weeks and higher PA levels at 13 weeks for the experimental group. The SDT process model for PA adoption showed that autonomous motivation and perceived competence at 6 weeks significantly predicted 13-week PA for the experimental group.Conclusions: This study provides a rigorous field test of SDT theory in a PA context. It demonstrates the versatility and applicability of the SDT model for health behavior change. SDT-trained PA counselors appear to provide valuable contribution to facilitating patient behavior change, by increasing patient autonomous motivation for PA.     

Integrating meaning in life and self-determination theory to predict physical activity adoption in previously inactive exercise initiates enrolled in a randomized trial

Self-Determination Theory (SDT) suggests that individuals with greater basic psychological needs satisfaction and autonomous motivation are more likely to adopt physical activity (PA). However, few longitudinal studies have examined these processes in exercise initiates outside the context of a formalized intervention. Further, an implicit yet relatively unexplored tenet of SDT is that when behaviors are closely connected to what is meaningful to individuals, those behaviors are more likely to be maintained. This study had two aims: (a) to examine SDT and a sense of meaning in life (MIL) in relation to PA in previously inactive exercise initiates, and (b) to determine whether daily measurement of MIL, mood, and PA impacts PA engagement. Upon joining a fitness center, participants (N = 160; M age = 43.3 years; 77% female) were recruited for a longitudinal study of PA adoption. Participants were randomized to a daily measurement condition (self-monitoring) where they reported daily MIL, mood, and PA or to an attention control condition. All participants self-reported their PA, basic psychological needs satisfaction, behavioral exercise regulation, and MIL at baseline, 4-weeks, and 12-weeks after starting an exercise program. Longitudinal path models were used to examine the relationships among study variables. Cross-sectionally, SDT constructs were largely related to PA in the expected directions. After accounting for SDT processes, baseline MIL was associated with greater PA at 4-weeks (p = .028). There were no differences in PA, SDT constructs, or MIL between the measurement self-monitoring and control groups. MIL predicted PA adoption above and beyond SDT predictors in previously inactive adults. Combined SDT and MIL intervention approaches may enhance PA adoption, and further research should explore their roles in PA adoption and maintenance.     

Change in physical and psychological health over time in patients with cardiovascular disease: on the benefits of being self-determined,physically active,and eating well

This study tested a longitudinal model examining the roles of motivation and perceived competence in the prediction of physical activity (PA) and healthy eating (HE) in individuals with cardiovascular diseases, and the effects of adopting these behaviors on individuals’ health. Participants completed measures of global motivation (baseline), contextual motivation and perceived competence for PA and HE (3 months), and self-reports of PA and HE behaviors (6 months). Physiological indicators and life satisfaction were assessed at the baseline and at 12 months. Structural equation modeling supported that individuals with self-determined motivation (SDM) were more likely to feel competent in changing their lifestyle and to engage in moderate and strenuous (vs. mild) exercise and HE behaviors, which had beneficial effects on individuals’ physiological and psychological health. This research confirms the respective roles of SDM and perceived competence in the health behavior change process and emphasizes the key function of SDM in the adherence of healthy behaviors over time.     

Motivation and physical activity levels in bariatric patients involved in a self-determination theory-based physical activity program

ObjectiveThis study examines the associations between pre-to post-intervention changes in motivation and physical activity (PA) levels of bariatric patients involved in a 6-month postoperative PA program based on self-determination theory (SDT). We also explore the extent to which patients’ perception of autonomy support and basic psychological need satisfaction during the program were associated with changes in their motivation to exercise.MethodForty patients were assigned to a motivational PA intervention (MPAI-G) or to a control group (CG). Both groups completed questionnaires assessing the variables of interest and wore GT3X accelerometers before surgery and after the program.ResultsThirty-two participants (78.1% female) completed all measures and were included in the present analyses. CG showed greater increases in integrated (d = −1.60, 95% CI [−2.40, −0.81]) and identified regulation (d = −0.75, 95% CI [−1.47, −0.03]) than MPAI-G. However, the MPAI-G experienced increases in introjected regulation (d = 1.95, 95% CI [1.11, 2.79]) and greater decreases in external regulation (d = −1.00, 95% CI [−1.74, −0.27]) than CG, which were associated with decreases in sedentary activity and increases in light and total PA. Oppositely to the CG, amotivation decreased in the MPAI-G (d = −2.98, 95% CI [−3.98, −1.97]) and it was related to increases in light and total PA. Changes in exercise motivation were associated with perceived autonomy support and basic psychological need satisfaction during the program.ConclusionThe SDT-based PA program gave rise to greater changes in controlled forms of motivation and amotivation than in autonomous motivation in post-bariatric surgery patients.     

Does students’ self-determined motivation toward Physical Education influence the effectiveness of a fitness teaching unit? A cluster-randomized controlled trial and cluster analysis

ObjectiveThe aim was to compare the effect of a Physical Education (PE)-based fitness teaching unit to improve cardiorespiratory fitness levels between students’ motivational profiles toward PE in high-school students using cluster analysis.MethodOne hundred and eighty-one high school students (final sample 165, 52.1% females; M_age = 12.9 ± 0.9) from nine pre-established classes were cluster-randomly assigned into an experimental group (n = 120) and control group (n = 61). The experimental group performed a fitness teaching unit twice a week for nine weeks. Students’ baseline of self-determined motivation toward PE was measured by the Spanish version of the Perceived Locus of Causality-II Scale. Cardiorespiratory fitness was measured before and after the intervention through the 20-m shuttle run test.ResultsBased on a two-stage cluster analysis approach, four clusters were identified in both groups. Results showed that the experimental group students within the high self-determined motivational profiles toward PE (i.e., clusters 2 and 4) statistically significantly improved their cardiorespiratory fitness levels compared with the control group students in cluster 2 (i.e., those with moderate self-determined motivational profile toward PE) (p < 0.05; d = 0.37–0.48). However, statistically significant differences between the students with a moderate autonomous motivation profile toward PE (i.e., cluster 3 of the experimental group) and the control group students in clusters 2 and 3 were not found (p > 0.05). Conclusions: With the objective of increasing all students’ cardiorespiratory fitness levels, PE teachers should encourage students’ motivation toward PE applying specific motivational strategies during PE lessons.     

A Test of Self-Determination Theory in the Exercise Domain

In accordance with self-determination theory (SDT; Deci & Ryan, 1985 ), this study examined the relationship between autonomy support, psychological need satisfaction, motivational regulations, and exercise behavior. Participants ( N =369) were recruited from fitness, community, and retail settings. Fulfillment of the 3 basic psychological needs (i.e., competence, autonomy, and relatedness) related to more self-determined motivational regulations. Identified and introjected regulations emerged as positive predictors of strenuous and total exercise behaviors. Competence need satisfaction also predicted directly—and indirectly via identified regulation—strenuous exercise. For participants engaged in organized fitness classes, perceptions of autonomy support provided by exercise class leaders predicted psychological need satisfaction. Furthermore, competence need satisfaction partially mediated the relationship between autonomy support and intrinsic motivation. These findings support SDT in the exercise domain.     

Motivational interviewing as a way to promote physical activity in obese adolescents: A randomised-controlled trial using self-determination theory as an explanatory framework

Using self-determination theory (SDT) as an explanatory framework, this randomised-controlled study evaluates the effect of a motivational interviewing (MI)-based intervention as an addition to a standard weight loss programme (SWLP) on physical activity (PA) practice in obese adolescents over a six-month period. Fifty-four obese adolescents (mean age?=?13?years, mean BMI?=?29.57?kg/m²) were randomly assigned to an SWLP group (n?=?28) or SWLP?+?MI group (n?=?26). Both groups received two SWLP sessions, supplemented for the SWLP?+?MI group, by six MI sessions. Perceived autonomy support, perceived competence, motivational regulations, PA and BMI were assessed at baseline, three and six months (i.e. the end of the programme). MLM analyses revealed that compared to SWLP, the SWLP?+?MI group had a greater BMI decrease and a greater PA practice increase over time. Moreover, the SWLP?+?MI group reported greater autonomy support from medical staff at the end of the programme, greater increase in integrated and identified regulations and a stronger decrease in amotivation. MI appears as an efficient counselling method as an addition to an SWLP to promote PA in the context of pediatric obesity.     

Feasibility of a Self-Determination Theory-based exercise intervention promoting Healthy at Every Size with sedentary overweight women: Project CHANGE

ObjectivesTo examine feasibility, acceptability and preliminary results of a Self-Determination Theory (SDT) -based exercise intervention with a Healthy at Every Size (HAES) orientation for sedentary overweight/obese women.DesignProject CHANGE was an 8-week randomized controlled trial with follow-up at 4-week.MethodTwenty-five sedentary, overweight women (BMI = 25–34.9) were randomized to either the SDT-based intervention with a HAES orientation (S/H) or exercise only (EX) intervention. The S/H group received exercise training and a weekly behavioral intervention while the EX group received only traditional supervised exercise training. Information about acceptability and feasibility was collected from process evaluation (i.e., participants' satisfaction and feedback) and objective data (e.g., retention, attendance, adherence to the PA goal). Assessments of PA participation and physical/psychological variables were obtained at baseline, post-intervention, and 4-week follow-up.ResultsParticipants reported high levels of satisfaction. Participation in the S/H group averaged 95%. Retention was high for both groups (S/H = 83.3% vs. EX = 84.6%), while adherence to the PA goal was better for the S/H group at follow-up (S/H = 60% vs. EX = 36.4%). The S/H intervention also resulted in larger effect sizes for changes in key motivational variables, including self-determination, autonomy, as well as goal-setting, planning and scheduling self-efficacy.ConclusionThe 8-week SDT-based intervention promoting Healthy at Every Size is feasible and acceptable and may result in better exercise adherence and improvements in motivational variables relative to traditional supervised exercise. These results support conducting additional research to determine the efficacy of this approach for promoting PA in sedentary, overweight women.     

Predictors of Long-Term Exercise Engagement in Patients With Obsessive-Compulsive Disorder: The Role of Physical Activity Enjoyment

Most U.S. adults, even more so those with psychiatric conditions like obsessive-compulsive disorder (OCD), do not engage in the recommended amount of physical activity (PA), despite the wide array of physical and mental health benefits associated with exercise. Therefore, it is essential to identify mechanistic factors that drive long-term exercise engagement so they can be targeted. Using the science of behavior change (SOBC) framework, this study examined potential predictors of long-term exercise engagement as a first step towards identifying modifiable mechanisms, in individuals with OCD, such as PA enjoyment, positive or negative affect, and behavioral activation. Fifty-six low-active patients (mean age = 38.8 ± 13.0, 64% female) with a primary diagnosis of OCD were randomized to either aerobic exercise (AE; n = 28) or health education (HE; n = 28), and completed measures of exercise engagement, PA enjoyment, behavioral activation, and positive and negative affect at baseline, postintervention, and 3-, 6-, and 12-month follow-up. Significant predictors of long-term exercise engagement up to 6-months postintervention were baseline PA (Estimate = 0.29, 95%CI [0.09, 0.49], p = .005) and higher baseline PA enjoyment (Estimate = 1.09, 95%CI [0.30, 1.89], p = .008). Change in PA enjoyment from baseline to postintervention was greater in AE vs. HE, t(44) = −2.06, p = .046, d = −0.61, but endpoint PA enjoyment did not predict follow-up exercise engagement above and beyond baseline PA enjoyment. Other hypothesized potential mechanisms (baseline affect or behavioral activation) did not significantly predict exercise engagement. Results suggest that PA enjoyment may be an important modifiable target mechanism for intervention, even prior to a formal exercise intervention. Next steps aligned with the SOBC framework are discussed, including examining intervention strategies to target PA enjoyment, particularly among individuals with OCD or other psychiatric conditions, who may benefit most from long-term exercise engagement’s effects on physical and mental health.     

Determinants of physical activity among patients with type 2 diabetes: the role of perceived autonomy support,autonomous motivation and self-care competence

Based on self-determination theory (SDT), this study investigated, whether the three central SDT variables (perceived autonomy support, autonomous motivation and self-care competence), were associated with engagement in physical activity (PA) among patients with type 2 diabetes when the effect of a wide variety of other important life-context factors (perceived health, medication, duration of diabetes, mental health, stress and social support) was controlled for. Patients from five municipalities in Finland with registry-based entitlement to a special reimbursement for medicines used in the treatment of type 2 diabetes (n = 2866, mean age 63 years, 56% men) participated in this mail survey in 2011. Of all measured explanatory factors, autonomous motivation was most strongly associated with engagement in PA. Autonomous motivation mediated the effect of perceived autonomy support on patients’ PA. Thus, perceived autonomy support (from one’s physician) was associated with the patient’s PA through autonomous motivation. This result is in line with SDT. Interventions for improved diabetes care should concentrate on supporting patients’ autonomous motivation for PA. Internalizing the importance of good self-care seems to give sufficient energy to maintain a physically active lifestyle.     

Motivational interviewing and self-determination theory in a web-based computer tailored physical activity intervention: A randomized controlled trial

Objective: This study explores whether a web-based physical activity (PA) intervention grounded in self-determination theory (SDT) and motivational interviewing (MI) is more effective and better appreciated than a traditional web-based PA intervention.

Design: A randomized controlled trial was conducted, comparing (1) I Move; a web-based PA intervention based on SDT and MI, (2) Active Plus; a traditional web-based PA intervention and (3) a waiting list control condition.

Main outcome measures: Weekly minutes of moderate to vigorous PA and weekly days with ≥30 min PA were measured through self-report at baseline and at 3 and 6 months from baseline.

Results: I Move achieved a small, but significant increase in weekly minutes of moderate to vigorous PA, while Active Plus did not have a significant impact on this outcome. Both interventions were effective in increasing weekly days with ≥30 min PA, whereas Active Plus yielded a greater effect on this outcome.

Conclusion: Overall, the web-based PA intervention grounded in SDT and MI did not outperform the traditional web-based PA intervention. Further research should reveal whether this type of intervention is profitable for long-term maintenance of PA levels.     

Goal contents,motivation, psychological need satisfaction,well-being and physical activity: A test of self-determination theory over 6 months

ObjectivesThis investigation examined how Goal Contents Theory, Organismic Integration Theory, and Basic Psychological Needs Theory collectively explain well-being and behavioral outcomes related to physical activity over 6 months. Specifically we examined a model whereby changes in relative intrinsic goal contents → changes in motivation → changes in psychological need satisfaction → well-being and physical activity.Methods and designParticipants were 203 adults from the general population (68.00% female; M_age = 32.57 years, SD = 15.73). Two identical questionnaire packages containing assessments of goal contents, motivational regulations, basic psychological need satisfaction, indicators of well-being and physical activity behavior, separated by six months were given to participants. Residualized change scores were analyzed with path analysis.ResultsResults supported the hypothesized sequence of SDT. Changes in psychological need satisfaction mediated the relationship between changes in autonomous motivation and well-being. A more complex pattern of results emerged for the indirect effects of motivation and psychological need satisfaction between relative intrinsic goals → well-being. Changes in competence satisfaction mediated the relationship between autonomous motivation and physical activity behavior. Moreover, changes in autonomous motivation through competence satisfaction mediated the relationship between relative intrinsic goals and physical activity.ConclusionsFindings support a model based on 3 mini-theories of SDT and suggest that psychological need fulfillment during physical activity could be a key mechanism that facilitates increased well-being and behavior. Findings also highlight the importance of examining competence, autonomy, and relatedness independently (rather than as a composite).     

Prospective associations between physical fitness and executive function in adolescents: The UP&DOWN study

IntroductionThe objective of the present work is to investigate the prospective associations between physical fitness components (cardiorespiratory fitness, motor fitness, and muscular strength) and two domains of executive function (working memory and inhibitory control) in adolescents.MethodsA total of 422 Spanish adolescents (13.35 ± 1.54 years, at baseline) from the UP&DOWN study with assessments at baseline and at 2-year follow-up were included in the analysis. Physical fitness was assessed using the ALPHA Fitness Test Battery. Working memory was measured by the n-back task and inhibitory control by the go/no-go task. Relationships of physical fitness components with working memory and inhibitory control were examined using linear regression models, adjusted for confounders.ResultsHigher baseline levels of the three physical fitness components (cardiorespiratory fitness, motor fitness, and muscular strength) individually predicted better performance on the working memory (β_ranged, from .159 to .207; all p < .012) and inhibitory control (β_ranged, from 0.168 to 0.263; all p < .004) tasks at the 2-year follow-up. Muscular strength was the only component associated with inhibitory control independent of the other 2 physical fitness components (β = 0.266; p = .005).ConclusionsAll components of adolescents’ physical fitness at baseline were individually associated with better working memory and inhibitory control at 2-year follow-up. Specifically, our results revealed that muscular strength was the component showing the strongest association with executive function, and even the only fitness component associated with inhibitory control independent of the other fitness components. These findings may have important public health and educational implication, since promoting exercise programs that improve physical fitness, and particularly, muscular strength, may positively influence cognitive health.     

Reciprocal relations between autonomous motivation from self-determination theory and social cognition constructs from the theory of planned behavior: A cross-lagged panel design in sport injury prevention

ObjectivesThe present study examined reciprocal relations between autonomous motivation from self-determination theory (SDT) and constructs from the theory of planned behavior (TPB) in a sport injury context.MethodsThe study adopted a three-wave longitudinal cross-lagged panel design. Physical education students in China (N = 4414; M_age = 14.42, SD = 1.75) completed self-report measures of autonomous motivation, attitude, subjective norm, and perceived behavioral control with respect to sport injury prevention at baseline (T1) and at two follow-up occasions one (T2) and three (T3) months later. Proposed reciprocal relations between autonomous motivation and the TPB constructs controlling for construct stability over time were tested using structural equation modeling.ResultsThree cross-lagged SEMs for effects of constructs measured at T1 on constructs measured at T2 and T3, and effects of constructs measured at T2 on constructs measured at T3 met goodness-of-fit criteria (CFI > 0.95, TLI > 0.94, RMSEA = 0.03, SRMR = 0.05) with consistent patterns of effects. Across the three models, autonomous motivation predicted the prospectively-measured TPB constructs with small-to-medium effect sizes (β range = 0.17 to 0.32, ps < .001), but associations between the TPB variables and prospectively-measured autonomous motivation were markedly smaller in size (β range = 0.01 to 0.18, ps range = .001 to .892).ConclusionsFindings provide initial support for the temporal ordering of the constructs in the integrated model of SDT and TPB in a sport injury context. Autonomous motivation from SDT is likely to be an antecedent of the constructs from the TPB.     

Exercisers' perceptions of their fitness instructor's interacting style, perceived competence, and autonomy as a function of self-determined regulation to exercise, enjoyment, affect, and exercise frequency

Puente, R. & Anshel, M. H. (2010). Exercisers' perceptions of their fitness instructor's interacting style, perceived competence, and autonomy as a function of self-determined regulation to exercise, enjoyment, affect, and exercise frequency. Scandinavian Journal of Psychology, 51, 38–45.
The primary purpose of the present investigation was to test the hypothesis, derived from Self-Determination Theory (SDT), that an individual's perceived competence and autonomy mediate the relationship between the exercisers' perception of their instructor's interaction style and the exercisers' motivation to exercise. A secondary purpose was to identify the affective and behavioral outcomes derived from self-determined regulation. It was hypothesized that SDT would significantly explain and predict exercise behavior. Participants consisted of 238 college students, 103 males and 135 females ( M age = 20.4 years, SD = 2.16), who volunteered to participate in the study. They were asked to complete a battery of questionnaires measuring instructor's interacting style, self-regulation to exercise, perceived autonomy and competence, enjoyment, positive and negative affect, and exercise frequency. Using structural equation modeling with observed variables, the results showed that perceived competence and autonomy mediated the relationship between perceived instructor's interacting style and self-determined regulation. It was also found that self-determined regulation was significantly related to exercise enjoyment, positive affect, and exercise frequency. It was concluded that understanding the motivational factors and emotional and behavioral consequences of physical activity will partially explain an individual's motives to engage regularly in exercise.     

Relations among exercise type,self-objectification,and body image in the fitness centre environment: The role of reasons for exercise

ObjectiveThe study aimed to investigate different types of exercise, the role of exercise motivation and body image outcomes within the fitness centre environment.Design and methodParticipants were 571 female fitness class participants recruited from fitness centres. They ranged in age from 18 to 71 years and participated in a variety of fitness activities both within and outside of the fitness centre environment. Reasons for exercise, self-objectification, body esteem, and disordered eating symptomatology were assessed using questionnaire measures.ResultsTime spent exercising within the fitness centre environment was more highly related to body image and eating disturbance than time spent exercising outside of the fitness centre environment. Participation in cardio-based workouts (e.g., cardiovascular machines) was positively related to self-objectification, disordered eating behaviour, and appearance-related reasons for exercise, and negatively related to body esteem. In contrast, participation in yoga-based fitness classes was related to lower self-objectification and exercising more for health and fitness. Appearance-focused reasons for exercise were found to mediate the relationship between exercise types and self-objectification, disordered eating, and body esteem.ConclusionThe results show that the reasons women have for doing exercise provide a mechanism through which different types of exercise are associated with negative body image outcomes. Thus, despite the physical health-related benefits associated with regular physical activity, exercise motivated by appearance reasons (e.g., weight control) can lead to poorer body image in some women.     

The Relationship Between Psychological Needs,Self‐Determined Motivation,Exercise Attitudes,and Physical Fitness1

The primary purpose of this study was to examine the relationships between psychological need satisfaction (competence, autonomy, and relatedness), exercise regulations, and motivational consequences proposed by Self‐Determination Theory (SDT; Deci & Ryan, 1985; Ryan & Deci, 2000). The secondary purpose was to explore changes in these constructs over the course of a 12‐week prescribed exercise program. Results indicated competence and autonomy were positively correlated with more self‐determined exercise regulations, which in turn were more positively related to exercise behavior, attitudes, and physical fitness. Multiple regression analyses revealed that exercise behavior mediated the relationship between self‐determined motives and physical fitness, and both identified and intrinsic exercise regulations contributed significantly to the prediction of attitudes. Paired‐sample t tests supported modest to large changes in need satisfaction constructs, as well as identified and intrinsic regulations over the 12‐week exercise program. These results suggest that SDT is a useful framework for studying motivational issues in the exercise domain.     

Activity experiences shape perceived fitness trajectories: Results from a 6-month randomized controlled trial in older women

ABSTRACT

In this study we addressed the subjective benefits of activity interventions that were designed to improve cognitive fitness in old age. Two hundred and fifty-nine women (aged 70–93 years) were randomized to participate in an exercise or a computer course or a control condition for 6 months. Subjective ratings of the perceived change of cognitive and physical fitness components were captured before, during, after the intervention interval, and at a 10-month follow-up. Positive and negative affect levels and objective cognitive fitness parameters served as possible covariates. Multilevel modeling revealed that the computer group rated memory and concentration as having improved at 4 months and again at 6 months. The exercise group, in contrast, perceived physical capacities as maintained or improved. The characteristics of the activity experience seem to determine the perceived fitness changes. We conclude that actual learning experiences improve one's self-concept of abilities.