Yoga for Physical and Mental Health

Perceived Stress Scale (PSS). This scale is a self-report instrument that evaluates the level of perceived stress during the last month, it consists of 14 items with a response format of a five-point scale (0 = never, 1 = almost never, 2 = occasionally when, 3 = often, 4 = very often). The total score of the PSS is obtained by reversing the scores of items 4, 5, 6, 7, 9, 10 and 13 (in the following sense: 0=4, 1=3, 2=2, 3=1 and 4 =0) and then adding the 14 items. The direct score obtained indicates that a higher score corresponds to a higher level of perceived stress.

Evaluates selective attention and concentration in the school context. The participant's task is to check carefully, starting from left to right, what is written on each line and must mark all the letters that have two small lines (two below, two above or one below and one above) with a "d". ". These elements are considered relevant. The other combinations (the "d" and the "p", with and without dashes) are considered irrelevant and should not be marked. The participant has 20 s for each line. This test has shown excellent reliability, with ranges between 0.90 and 0.97 for both Cronbach's α and the test-retest, and has also shown convergent and divergent validity.

It evaluates, in a global way, the dispositional capacity of an individual to be attentive and aware of the experience of the present moment in everyday life. The scale is a 15-item univariate self-report with a view of the mindfulness construct centered on the attention / consciousness variable.

Dynamometer will be employed to assess hand grip strength.

Hospital Anxiety and Depression Scale (HADS). This scale consists of 14 items with 4 response alternatives ranging from 0 to 3 for a total of 0 to 21 points. It has 2 subscales and the score is obtained by adding the scores of each item that make it up, the interpretation criteria being the following: Range of normality (0-7), Possible case of anxiety or depression (8-10) and Case of anxiety or depression (11-21).

Pittsburgh Sleep Quality Index (PSQI). The PSQI consists of 19 self-assessment questions or items and 5 more to be completed by the person with whom the participant shares a bed or room (although the latter is only used to provide clinical information). These items generate a total score and 7 components or domains: sleep quality; sleep latency; sleep duration; sleep efficiency; sleep disorders; use of sleeping medications; daytime dysfunction. The PSQI total score ranges from 0 to 21, with a higher score indicating poorer sleep quality.

is a 14-items questionnaire of mental well-being including subjective well-being and psychological functioning. All items in a 5-point Likert scale are worded positively and addressed aspects of positive mental health and measure the frequency of the subject's attitudes from "never" to "always". Higher scores indicate mental well-being. The Italian version of the WEMWB proved to be a reliable instrument, as indicated by a Cronbach's alpha that ranged from 0.83 to 0.864. The authors of the Italian WEMWBS reported for the students a mean score of 41.45 ± 6.66.

It is one of the most used tests to evaluate emotional control problems in adults. The 36-item self-report scale is used to generate scores on the following six subscales by asking respondents how they connect with their emotions: a) non-acceptance of emotional responses; b) difficulty engaging in goal-directed behavior; c) difficulties in impulse control; d) lack of emotional awareness; e) Limited access to emotion regulation strategies; and f) lack of emotional clarity. To rate each item, a 5-point Likert scale is used, from 1 which is "almost never" to 5 which is "almost always". A higher score indicates greater difficulties in regulating emotions, in other words, greater emotional dysregulation.