AirBadminton for Physical Activity and Well-Being in Spanish Students: Post-COVID-19.

Sports commitment is a psychological construct that has been studied since the 1990s and that has been used in the educational field. The main objective of this study is to analyze the suitability of AirBadminton to acquired sports commitment and the classroom climate generated through the practice of AirBadminton. It was also proposed to analyze the physical, technical and temporal characteristics of AirBadminton. The research was developed with 1298 students between 13 and 15 years of age (mean ± standard deviation; body height: 1.61 ± 7.08 m; body mass 59.68 ± 7.11 kg); one group developed an AirBadminton didactic unit forming the experimental group, and a second group carried out other net games, being the control group. The following instruments were used: the Sports Commitment Questionnaire-2 CCD-2, the Brief Class Climate Scale EBCC, the analysis software LongoMatch version 1.10.1, the heart rate (HR) and the distance traveled of some participants were monitored with different Polar brand sensors (Polar H10 and Verity Sense) and two SPI-Elite GPS devices from the GPSports brand. Results show that sports commitment was increased in the experimental group. AirBadminton shows aspects that are directly and positively related to intrinsic motivation and adherence to sports practice; it improves the classroom climate and increases the desire to excel of the participants.

The Relationship between Speed and Strength in the Beach Volleyball Serve.

The objective of this study was to analyze the relationship between isometric force produced in different joints and its effects on the power kick serve speed in beach volleyball as a predictive aspect to improve sports performance. Seven athletes competing at national and international levels (mean ± standard deviation; age: 21.6 ± 3.20 years; body height: 1.87 ± 0.08 cm; body mass 80.18 ± 7.11 kg) were evaluated using maximum isometric force contractions (i.e., spinal and knee extension, grip by a hand dynamometer (handgrip), internal shoulder rotation, shoulder flexion, elbow flexion and extension, and wrist flexion). Speed of the ball was recorded with a pistol radar and force was measured with a strain gauge. Results showed a relationship between isometric force developed in the internal rotation of the shoulder and speed of the ball (r = 0.76*; p < 0.05). In the remaining isometric exercises, positive low to moderate correlations were found in the spine and knee extension (r = 0.56; p = 0.200) and elbow flexion (r = 0.41; p = 0.375). On the other hand, the remaining isometric exercises obtained weak or non-significant correlations. Force developed in the internal rotation of the shoulder highly correlated with the speed of the power kick, explaining, together with the elbow flexion and the extension of the knee and back, much of the variability of the power kick of beach volleyball athletes.