Background

Numerous national studies have shown that school-aged children and adolescents in China are physically inactive and do not reach 60 min of daily moderate to vigorous physical activity (MVPA) recommended by the World Health Organization [1,2,3,4]. Physical education (PE) is important in promoting adolescents’ physical activity (PA) because it provides opportunities for students to engage in MVPA. Moreover, Students learn sport skills and accumulate sports knowledge in PE classes to help them become physically active in school, beyond school and throughout their lives [5, 6]. The United States’ Centers for Disease Control and Prevention and the United Kingdom’s Association for Physical Education suggested that elementary and secondary school students engage in MVPA for 50% of their time in PE class to obtain health benefits [7]. However, studies found that secondary school students from several countries do not meet this recommended time [8,9,10,11,12,13,14]. Hollis et al. [14] found that secondary school students engage in MVPA for an average of 40.5% of their time in PE class. Hence, promoting adolescent MVPA engagement in PE has become an imperative task.

Motivation is an individual drive to act, and several studies have reported that the motivation of students in PE drives them to engage in physical activities and develop their habit of PA participation [15,16,17]. The relationship between the motivation and PA engagement of students in PE must be investigated to provide evidence to develop strategies in promoting students’ PA level in PE classes [6, 18]. Self-determination theory (SDT) [19] and achievement goal theory (AGT) [20] are two social-cognitive theories that are widely used for studying student motivation in the PE setting.

Theoretical integration of SDT and AGT

SDT [21] is one of the numerous theoretical frameworks that can provide insights into human motivation and psychological development. According to SDT, a continuum of motivation determines behaviour: intrinsic motivation (an individual engages in activity out of interest in the activity itself), extrinsic motivation (an individual performs an activity to obtain desirable and separate outcomes such as rewards, high grades and praise), and amotivation (an individual perceives no association between behaviour and corresponding outcome) [19, 22]. Extrinsic motivation is composed of four behavioural regulations such as external regulation, introjected regulation, identified regulation and integrated regulation which vary in their level of self-determination. External regulation occurs when an individual’s behaviour is governed by the externally controlled contingencies administered by others. Introjected regulation occurs when an individual’s behaviour is controlled by contingent consequences that they administer by themselves. Identified regulation occurs when individuals participate to gain benefits that they consider important (e.g. fitness gains or weight loss). Integrated regulation is the fullest and most complete form of internalisation of extrinsic motivation, in which individuals consider the benefits they have gained consistent with their core values and beliefs [22]. However, researchers suggested that assessing the integrated regulation of adolescents is not needed because they have yet to develop this type of regulation [23, 24]. According to SDT, self-determined forms of motivation, including intrinsic motivation and identified regulation, are associated with positive outcomes, whereas controlling forms of motivation, such as introjected regulation, external regulation and amotivation, are related to negative outcomes [22]. Another core tenet of SDT is that individuals have innate needs to be competent (i.e. the ability to achieve desired outcomes effectively), autonomous (i.e. having the liberty to make individual choices and a sense of freedom before taking action) and socially related (i.e. connection with and acceptance by significant others). The achievement of these needs can promote self-determined motivation and further influence their cognitive, affective and behavioural consequences [19, 21]. A third fundamental tenet of SDT is that different social contexts either satisfy or thwart the three innate psycholgoical needs for autonomy, competence and relatedness. Under PE context, studies found that perceived need support (autonomy support, competence support, and relatedness support) from PE teachers [25,26,27,28,29,30,31] positively affects three types of psychological needs to foster self-determined motivation. Moreover, these three types of needs are positively associated with self-determined motivation and further enhanced their MVPA level [25,26,27].

Another prevailing theory is AGT, which describes two factors associated with adolescent motivation, namely, individual’s goal orientation (i.e. individuals’ competence towards an activity) and social environment (i.e. motivational climate) [20, 32]. In this study, we only adopted the construct of motivational climate, which refers to a psychological environment that directs students’ competence towards activities in achievement situation in PE [32,33,34]. According to AGT, motivational climate is divided typically into two climates, namely, task-involving and ego-involving climate. Task-involving climate is characterised by self-references, mistake as part of integral learning, cooperation, effort and task-mastery, whereas ego-involving climate is characterised by normative comparison, less effort and competition with others [34]. Under PE context, a task-involving climate created by teachers is positively related to the satisfaction of the three psychological needs, whereas the ego-involving climate is not related or negatively related to autonomy, competence and relatedness [35, 36].

Both theories emphasise the classroom climate related to support competence. However, SDT does not divide the competence support climate into task-involving and ego-involving climate, which are crucial elements in motivating students in PE [32, 37]. Studies suggested that the two models should be integrated to provide a comprehensive understanding of the motivational mechanisms involved in class [24, 32]. Therefore, the present study integrated the SDT and AGT to investigate the relationship among the four types of PE climate (i.e. students’ perception of autonomy support, task-involving PE climate, ego-involving climate and relatedness support), psychological needs (i.e. autonomy, competence and relatedness), self-determined motivation and MVPA time of students in PE. On the basis of the literature, a hypothesised model was proposed (Fig. 1): (1) self-determined motivation is positively associated with student MVPA in PE. (2) Self-determined motivation can be positively predicted by the satisfaction of the three basic psychological needs. (3) Students’ perceived autonomy support, task-involving PE climate, and relatedness support are positively related to the satisfaction of the three psychological needs, whereas perceived ego-involving climate is negatively related. (4) The three basic psychological needs and self-determined motivation mediate the relationship between the PE climate created by PE teachers and the MVPA of adolescent students in PE.

Fig. 1
figure 1

Hypothesized model of motivational process in PE. Note. SDI = self-determined motivation index; MVPA = moderate-to-vigorous physical activity; The components in the dotted box stem from AGT, other components stem from SDT

Full size image

Method

Participants and setting

The current study was approved by ethics committee of Shanghai University of Sport and relevant educational authorities. For convenience, three secondary schools were selected from Shanghai, a city in the eastern part of China. Secondary school has four grades (i.e. Grades 6 to 9) and three or four classes were selected randomly from each grade. A total of 1344 students from 42 classes were invited to participate in this study, and consent forms were sent to them and their parents. Of the 1344 students, 1221 volunteered to participate, with 1199 students providing MVPA and survey data (98.2% response rate).

Participants were taught a 40-min co-educational PE class on alternate days by 18 certified PE teachers with 8 to 15 years of teaching experience in school settings. Data were collected from 42 different PE classes, including three track and field lessons, five game lessons, three aerobics lessons, six basketball lessons, five football lessons, four table tennis lessons, six volleyball lessons, three badminton lessons, three kung fu lessons, and four jump rope lessons. In a typical PE classes, a 5- to 10- min warm-up was provided at the beginning of the class. Then the teachers instructed sports skills and organized students to practice during the middle period of the class (25 to 30 min). Finally, teachers provided cool-down activities and concluded the lesson (5 min).

Measures

MVPA in PE

Actigraph GT3X accelerometers were used to measure MVPA of secondary school students in PE, which had been confirmed to be a valid instrument in measuring the PA of children and adolescents [38, 39]. A one-second epoch was used to avoid underestimating short periods of high-intensity activity; specific cut-off points for Chinese children and youths aged 9 to 17 years were used to determine activity level thresholds, defining MVPA as counts per minute ≥2800 [40].

Self-determined motivation

Motivation in PE was assessed using the Perceived Locus of Causality (PLOC) scale (Table 1) [41]. The PLOC included four dimensions (intrinsic motivation, identified motivation, external motivation, and amotivation), each with four items. Evidence on internal consistency and construct validity was found adequate in previous studies [41, 42]. To examine student self-determined motivational levels [36], a self-determination index (SDI) was adopted by using the formula, SDI = (2 × intrinsic motivation) + (identified motivation) – (external motivation) – (2× amotivation) [12, 17].

Table 1 MCPES, Basic Psychological Needs and PLOC Scales
Full size table

Basic psychological needs in physical education

The Psychological Needs Satisfaction Scale (Table 1) in PE lesson [43] was adopted to measure the autonomy, competence, and relatedness of students. Each subscale of the three psychological needs had three items, resulting in a total of nine items. The composite reliability coefficients for autonomy, competence, and relatedness were acceptable [43].

Motivational climate in physical education

Students’ perception of the motivational climate in PE were assessed using the Motivation Climate in Physical Education Scale (MCPES) [44], which consists of four subscales that measure the climate of autonomy support, relatedness support, task-involving, and ego-involving (Table 1). The scale has 18 items, with five items assessing autonomy support, five items assessing task-involving climate, four items assessing relatedness support and four items assessing ego-involving climate. Internal consistency and construct validity of the sample of secondary school students were adequate [32]. Table 1 shows the three scales.

Translation procedures

Before data collection, questionnaires were translated into Chinese and validated. Translation and back-translation of the scales were undertaken by two experts who are fluent in both Chinese and English. The back-translated version was then compared with the original version and noted differences were negotiated by the two translators until the translators agreed. The Chinese version of the questionnaire was sent to five experts to verify the validity, and modifications were made on the basis of suggestions from the experts. For instance, the item ‘what’s most important is that we progress every year in our skill’ was changed to ‘what’s most important is that we progress every year in our motor skills’. The item ‘our PE class has a good sense of unity’ was changed to ‘we have a good sense of unity in PE class’ because the new item was more in line with the language habits of Chinese adolescents.

Data collection

Data were collected by the first author and three research assistants from December 2018 to January 2019. Prior to starting each PE class, the research purpose was explained, and instructions on how to wear the accelerometers were provided. Before the beginning of a typical PE class, participating students were asked to wear the Actigraph GT3X accelerometers. The accelerometers were fastened to the right hipbone by an elastic belt to secure the device for the entire lesson. A research assistant monitored the students to ensure that they did not remove the accelerometers during the PE classes. All accelerometers were returned by the end of the class. Therefore, the valid duration of wearing an accelerometer was defined as 100% of PE class time. After class, the Actigraph data were downloaded to individual computers via the ActiLife software 6.11.5, and raw accelerometer counts were converted into minutes spent in MVPA per class. After class, printed questionnaires were distributed to the students. The survey was completed within approximately 15 min. The questionnaires were collected immediately upon completion. Research assistants carefully checked each questionnaire if any items were missed. If some items were missed, then the participant student was required to take it back and complete it.

Data analysis

Data was anlysed using IBM SPSS Amos 21.0 in this study. Confirmatory factor analysis (CFA) was initially employed to estimate the adequacy of the measurement model. Structural equation modelling (SEM) analysis with maximum likelihood estimation was conducted to examine whether the hypothesised theoretical model specified in Fig. 1 fit the data in this study. Model fit to the data was inspected using chi-square statistic (X2) value, goodness-of-fit index (GFI), incremental fit index (IFI), comparative fit index (CFI), standardised root square residual (SRMR) and root mean square error of approximation (RMSEA). According to Hu and Bentler [45], CFI and IFI with values close to or greater than 0.90 and RMSEA and SRMR with values of 0.06 and 0.08 or less, respectively, show an acceptable model fit. This study also used bootstrap-generated bias-corrected confidence approach to explore the mediated relationship among variables.

Results

Demographic characteristics

Out of the 1199 participants, 11 students provided incomplete data, and two students were outliers because of accelerometer malfunction. All these data were consequently eliminated because they could potentially bias the results. Hence, the final analytic sample consisted of 1186 participating students. The ages of participants ranged from 11 to 16 years (M = 13.09, SD =1.38). The break down by gender was 538 (45.4%) boys and 648 (54.6%) girls. Participants consisted of 318 (26.8%) grade six students, 306 (25.8%) grade seven students, 259 (21.8%) grade eight students, and 303 (25.5%) grade nine students (Table 2).

Table 2 Demographic characteristic and Descriptive results
Full size table

Scale reliability and validity

Mardia’s multivariate kurtosis coefficient was used to examine the normality of each variable, and the results indicated that the data distribution was abnormal. CFA was implemented to test the construct validity of scales. CFA was conducted by using the maximum likelihood estimation method with the bootstrapping procedure, because it does not require a normal distribution of data. The measurement model for all the scales shows an acceptable fit to the observed data (X2 = 3626.927, df = 805, P < .0001; CFI = 0.916; IFI = 0.916; SRMR = 0.053; RMSEA = 0.054). Factor loadings of all observed variables ranged from 0.281 to 0.939, with most of them exceeding 0.4 except for two items (i.e. ‘because that’s what I am supposed to do,’ with factor loading of 0.281 and ‘because I can learn skills which I could use in other areas of my life’ with factor loading of 0.341). When these two items were excluded from the scales, the CFA results showed that the fit index of CFA improved (X2 = 3113.877, df = 724, P < .0001; CFI = 0.928; IFI = 0.928; SRMR = 0.0509; RMSEA = 0.053). The factor loadings of all observed variables ranged from 0.527 to 0.939.

The test–retest reliability was checked with 34 adolescents between the ages of 12 and 14 for 2 weeks. The text-retest coefficients of most subscales exceed 0.70 and demonstrated acceptable test-retest reliability [46] at 0.82 for autonomy support, 0.73 for social relatedness support, 0.74 for task-involving climate, 0.73 for ego-involving climate, 0.71 for autonomy, 0.75 for competence, 0.78 for relatedness, 0.77 for intrinsic motivation, 0.79 for external motivation, and 0.85 for amotivation. The identified motivation subscale of PLOC exhibits test-retest reliability coefficient of 0.65, which is below 0.70, but the subscale was retained because of its theoretical importance. Cronbach’s alpha coefficient was used to determine internal consistency. Results showed that Cronbach’s alpha coefficients of all scales exceed the acceptable value of 0.70 [47] (see Table 3). These results indicated acceptable internal consistency of all the subscales.

Table 3 Internal consistency and correlationship among variables (N = 1186)
Full size table

Descriptive analysis and bivariate correlations

Table 2 presents the descriptive statistics and bivariate correlation for the scales. Except for external motivation (M = 2.84, SD = 1.58) and amotivation (M = 1.44, SD = 1.14), the mean scores of other variables were higher than the midpoint. Students spent an average of 15.5 min in MVPA, accounting for 38.8% of the duration of the PE lesson.

Given that the present data indicated abnormal distribution, the bivariate correlation for each variable was calculated by using Spearman’s correlation. Bivariate correlation results showed that the four types of classroom climate variables, namely autonomy support, relatedness support, task-involving climate and ego-involving climate, were positively related to autonomy (ρ = 0.57, P < 0.01; ρ = 0.42, P < 0.01; ρ = 0.42, P < 0.01;ρ = 0.23, P < 0.01), competence (ρ = 0.37, P < 0.01; ρ = 0.39, P < 0.01; ρ = 0.45, P < 0.01; ρ = 0.26, P < 0.01) and relatedness (ρ = 0.42, P < 0.01; ρ = 0.56, P < 0.01; ρ = 0.52, P < 0.01; ρ = 0.26, P < 0.01). Autonomy, competence and relatedness were positively related to intrinsic motivation (ρ = 0.42, P < 0.01; ρ = 0.53, P < 0.01; ρ = 0.49, P < 0.01) and identified motivation (ρ = 0.36, P < 0.01; ρ = 0.41, P < 0.01; ρ = 0.46, P < 0.01), but were negatively related to external motivation (ρ = − 0.12, P < 0.01; ρ = − 0.13, P < 0.01; ρ = − 0.09, P < 0.01) and amotivation (ρ = − 0.17, P < 0.01; ρ = − 0.17, P < 0.01; ρ = − 0.19, P < 0.01). Intrinsic motivation and identified motivation were positively associated with student MVPA (ρ = 0.16, P < 0.01; ρ = 0.12, P < 0.01) in PE (Table 3).

Testing hypothesized structural modelling

SEM was used to test the relationship among the latent variables outlined in Fig. 1. The results of path analysis revealed good fit to the data (X2 = 2048.997, df = 357, P < 0.0001; CFI = 0.918; IFI = 0.918; SRMR = 0.067; RMSEA = 0.058) (Fig. 2). The R2 value (Table 4) indicated that 54.8, 64.8 and 30% of the variance in autonomy, relatedness and competence scores were explained by four types of classroom climate variables including autonomy support, relatedness support, and task- and ego-involving climate, respectively. Moreover, 33.2% of the variance in self-determined motivation was predicted by autonomy, competence, and relatedness. Finally, 1.4% of the variance in students’ MVPA in PE was explained by self-determined motivation. Most of the regression weights were significant and positive except for three paths, namely, the path from relatedness support to competence (β = 0.072, P > 0.05), the path from ego-involving climate to autonomy (β = 0.028, P > 0.05) and the path from ego-involving climate to relatedness (β = 0.042, P > 0.05).

Fig. 2
figure 2

Self-determination process model with standardized coefficients for participants. Note. SDI = self-determined motivation index; MVPA = moderate-to-vigorous physical activity; Broken lines represent nonsignificant standardized parameter estimates; Solid lines represent significant standardized parameter estimates

Full size image
Table 4 Standardized Parameter Estimates of Indirect Effects and R2 value
Full size table

To examine the mediating effect, the 11 direct paths presented in Table 4 were added to the hypothesised model. After the 2000 bootstrap samples were extracted from the raw data, the results showed the partial mediation for task-involving climate (β = 0.149, P < 0.01; bootstrap 95% CI = 0.093–0.221) to self-determined motivation through autonomy, competence and relatedness. The partial mediation was supported for ego-involving climate (β = 0.051, P < 0.01; bootstrap 95% CI = 0.025–0.088) to self-determined motivation only through competence.

Discussion

The present study aimed to examine the relationship among PE climate (i.e. autonomy support, relatedness support, task-involving climate and ego-involving climate), three basic psychological needs (i.e. autonomy, competence and relatedness), self-determined motivation and MVPA of secondary school students. Findings showed that the autonomy support and task-involving climate students perceived were positively related to all three psychological needs, whereas relatedness support positively predicted autonomy and relatedness, and ego-involving climate was only positively related to competence. Autonomy, competence and relatedness are positively associated with self-determined motivation towards MVPA. Finally, self-determined motivation positively predicted the MVPA of secondary school students.

Self-determined motivation

Results of the present study indicated that the self-determined motivation of secondary school student was positively related to their MVPA during PE. This finding supported our first hypothesis. This finding was also consistent with the tenet of SDT [22] and previous studies in PE context [15, 17, 48]. However, the findings of the present study showed that self-determined motivation only accounted for 1.4% of the variance in student MVPA. This was lower than the results of previous studies under the PE context, ranging from 2 to 4% [15, 17, 48]. The nature of the Chinese PE curriculum and Chinese educational culture may contribute to the low interpretation rate of variance in student MVPA. Firstly, the Chinese PE curriculum is compulsory, and each student must attend PE classes. Moreover, the class content and PE activities are arranged by secondary schools and teachers, and students cannot choose activities in PE class. Therefore, student motivation is a non-factor in PE classes, possibly resulting in the small contribution of self-determined motivation to student MVPA. Secondly, education in China is based on Confucian principles, which have educated students to be obedient and place emphasis on self-control and personal restraint [49, 50]. This practice may lead to students’ lack of knowledge of their own motivation and interests, thus weakening the effect of their self-determined motivation on their MVPA participation. Although self-determined motivation only explained 1.4% of the variance in student MVPA, it remained important, as students with self-determined motivation were likely to continue to participate in MVPA out of the PE class [26, 27]. On the basis of this finding, PE teachers are advised to adopt instructional strategies (e.g. cooperative learning; Supportive, Active, Autonomous, Fair, Enjoyable [SAAFE] teaching principles [51]) and activities to stimulate students’ interest and improve students’ self-determined motivation, which ultimately enhances MVPA in PE.

Psychological needs

Results showed that the three psychological needs of autonomy, competence and relatedness positively predicted self-determined motivation. Therefore, when students perceived more competence to exhibit their sport skills, had more opportunities to determine and were more connected with classmates in PE classes they are more likely to be intrinsically motivated to participate in MVPA [24, 27, 29, 31, 35, 36, 52, 53]. Furthermore, the satisfaction of the three psychological needs mediated the relationship between the PE climate created by teachers and self-determined motivation, which was consistent with the tenet of SDT [22]. The importance of the psychological needs of autonomy, competence and relatedness were suggested by the direct and indirect relationships. The fourth hypothesis was partly supported. The findings suggested that PE teachers may provide students with opportunities to cooperate in PE classes (relatedness), give choices to students and involve them in the decision-making process (autonomy) and provide students with more positive experiences for learning and mastering various motor skills (perceived competence) to motivate them to engage in PE activities.

Relatedness was the strongest predictor of self-determined motivation among the three psychological needs in this study. This finding was consistent with the studies of Standage et al. [24] and Cox et al. [53], but it was different from other studies [29, 42, 52] that found perceived competence as the most important variable to self-determined motivation. Deci and Ryan [21, 22] argued that the relative effect of each psychological need satisfaction on self-determined motivation may vary depending on the functional significance of the context. The strongest influence of relatedness may be related to the emphasis of PE on student cooperation in China. The Chinese Curriculum Standard for Physical Education and Health of the primary and middle schools indicated that one of the objectives of the PE curriculum was to develop student social adaption [54]. Pedagogical models that addressed student collaboration (e.g. cooperative learning approach) were recommended to PE teachers to develop students’ collectivism and cooperative consciousness [54]. More opportunities were provided for students to interact with peers in PE classes. These opportunities possibly allowed them to find PE fun and exciting and ultimately encouraged them to participate in PE activities. The low importance of student autonomy and competence in SDT in this study is also understandable because of students’ insufficient autonomy in PE classes and the weakening importance of sports skills and sports performance in the current PE learning assessment system [54].

Influence of PE climate

The finding of this study showed that autonomy support positively predicted the three psychological needs. Specifically, students felt autonomous, competent, and related when perceiving autonomy support with low control. This finding supported the third hypothesis and was congruent with previous studies in the context of PE [29, 30]. Furthermore, the magnitude of the standardised regression coefficients from autonomy support to the three psychological needs was the highest among the four types of classroom climate, suggesting that autonomy support mostly influenced the satisfaction of the three psychological needs. However, the Chinese traditional teaching style was authoritarian or controlling in PE classes [55]. The mean score of student perceptions of autonomy support climate was lower than that of relatedness support and task-involving climates in our study, thus confirmed this fact.

With regard to relatedness support, research findings indicated that student learning in a PE environment where good relationship among students were established felt more autonomous and related in PE, which was consistent with previous research [53]. Unlike the third hypothesis, the path from relatedness support to student competence was nonsignificant, revealing that the relatedness support PE teachers created could not predict student perception of competence in PE. The possible reason was that the harmonious relationship and emphasis on cooperation among students may weaken competition among students [56], distracting student attention from their competence and performance in PE.

Research findings showed that the student perception of task-involving climate was positively and significantly related to psychological need satisfaction of autonomy, competence and relatedness. Students felt more autonomous, competent, and related when they perceived that PE teachers emphasised their effort and self-reference on success or progress. These findings were aligned with previous study in the context of PE [35] and sports [57]. However, unlike the third hypothesis, the results showed that ego-involving climate was positively associated with competence and not significantly related to autonomy and relatedness. Such climate resulted in competition among students, which may help improve their sports competence [58]. The nonsignificant influence of ego-involving climate on relatedness and autonomy was also accepted because this type of climate does not address student connectedness and autonomy.

Given the importance of motivational climate on autonomy, competence and relatedness, a class climate that focuses on autonomy, competence and relatedness of students is needed to promote student psychological needs. PE teachers should provide autonomy support and are suggested to exert effort in giving students more freedom to make choices, involving them in decision making and respecting their personal volition during PE classes. Relatedness support should be cultivated, and PE teachers should set challenging goals for cooperative groups and emphasise the importance of team progress so as to unite students as a group. Although ego-involving climate contributed to improving students’ perceived competence, its adoption by PE teachers is prudent because it emphasises the normative comparison among students [59]. Finally, PE teachers are suggested to create a task-involving climate that emphasises effort, progress on self-referenced criterion and learning new things during the PE lessons through a variety of teaching strategies and methods (e.g., TARGET approach [33]). Although PE plays a role on increasing MVPA in schools, it is important to note that the main target of PE is to develop children’s movement skills, which might improve movement skill competence and promote engagement in PA during other periods of time and long term [60].

Strengths and limitations

The present study has several strengths. Firstly, it was the first to examine the relationship among the PE climate from the four dimensions, the satisfaction of psychological needs, motivation, and accelerometer-determined MVPA in secondary school students. Secondly, objective measures were adopted to evaluate the MVPA of secondary school students to eliminate the bias of subjective scales. Thirdly, the present study provided new insights into how the manners by which students perceive the PE climate created by PE teachers had different influence on autonomy, competence and relatedness. However, this study has limitations. Firstly, this study is cross-sectional; hence, causal inferences cannot be made. Further longitudinal and intervention studies are needed. Secondly, participants were only from three secondary schools in Shanghai, China. Thus, the results of this study may not be used to generalise situations in other populations. Future research should expand the population beyond Shanghai to other regions or countries. The third limitation was the use of the SDT index to assess students’ motivation. Future studies should focus on analysing the relationship among intrinsic motivation, integrated motivation, identified motivation, introjected motivation, external motivation, amotivation and MVPA in PE. Fourthly, this study did not consider the influence of demographic variables such as gender and age when analysing the relationship between SDT variables and MVPA. Future studies should consider the influence of demographic variables.

Conclusion

The results of this study emphasised the importance of classroom climate created by PE teachers. In addition, the findings supported that a model of motivation, which integrates SDT and AGT, provided new insights into understanding MVPA in PE in the Chinese curriculum. Findings implied that PE climate that focused on support of autonomy (e.g. providing students with the freedom to make choice), relatedness (e.g. emphasizing students’ cooperation) and task-involving climate, which address students’ effort, should be created to promote students’ psychological needs, self-determined motivation and ultimately increased the MVPA of students in PE.