Effects of Music Combined With Sports Games on Alleviating Psychological Stress, Anxiety and Mental Energy Among Adolescents During COVID-19 Pandemic in Lanzhou Gansu Province China

Save-6 is a questionnaire developed by South Korean scholars Chung et al. (2021) in 2021 to measure the stress and anxiety responses of ordinary residents to COVID-19. The questionnaire contains six questions, including six major symptoms of stress and anxiety in the general public in response to COVID-19. The save-6 scale obtained good internal consistency after use in Korea (Cronbach's Alpha = 0.815). The Save-6 scale was found to be a reliable, valid and useful simple measurement that could be applied to the general population.

The Fear of Coronavirus Scale is a questionnaire designed to measure the Fear, concern and anxiety of the general public regarding COVID-19. It was developed by Ahorsu et al. (2020) research and development. The questionnaire includes seven items of public fear of COVID-19 (item-total correlation (0.47 to 0.56)). More specifically, Reliability values such as internal consistency (α =.82) and test -- retest reliability (ICC =.72) were acceptable. The Fear of COVID-19 Scale, a seven-item scale, has robust psychometric properties. It is reliable and valid in assessing fear of COVID-19 among the general population and will also be useful in allaying COVID-19 fears among individuals.

Athletic Mental Energy Scale (AMES) is a questionnaire developed by Lu et al. (2018) which is specially used to measure Mental Energy. The questionnaire consists of 18 related questions. The test subjects need to choose the most consistent level from the six feelings (completely so - completely not) according to their feelings, and each feeling has corresponding score (6-1). The final score can represent the mental energy of the subject. The questionnaire obtained high reliability (Cronbach's α = 0.95) after being used in Taiwan and Malaysia, and proved to be an effective mental energy measurement tool.

Clough et al. (2002) developed a measure of mental toughness known as the Mental Toughness Questionnaire-48 (MTQ-48). The questionnaire contains 48 questions about mental toughness. Participants were asked to choose the most consistent of five feelings (strongly disagree - strongly agree) based on how they felt, with each feeling given a score (1-5). The final score represents the participants' mental toughness. The questionnaire has been widely used to measure mental toughness and is an effective measurement tool.

Portuguese Physical Literacy Assessment Questionnaire (PPLA-Q) is a survey published by Mota et al. (2021). The developed questionnaire is designed to measure the physical literacy of high school students. The questionnaire contains three modules of cognitive, psychology and social. In this study, we choose the module of psychological (46 likert-type items). Participants were asked to choose the most consistent of five feelings (not at all - totally) based on how they felt, with each feeling given a score (0-4). The final score represents the participants' Physical literacy. The questionnaire has been used to measure middle school students in Portugal and is an effective measurement tool.

The Achievement Emotions Adjective List (AEAL) is a brief self-report multi-item questionnaire deputed to assess ten achievement emotions, namely enjoyment, pride, hope, relief, relaxation, anxiety, anger, shame, hopelessness, and boredom. The AEAL is a questionnaire developed by Raccanello et al. (2021) and it scale achieved good internal consistency after use in Switzerland's middle school students (Cronbach's Alpha = 0.78). AEAL is considered to be a simple, non-invasive and effective tool for assessing the emotions of middle school students.

Saliva cortisol levels should be measured according to the tools and methods required by local medical institutions. Saliva of some subjects should be collected and handed over to local medical institutions for relevant measurement.

HRV data were collected using a heart rate variability (HRV) analyser.

Blood oxygen saturation (SaO2) data were collected using an oxygen saturation tester.