Effectiveness of an Adapted Basketball Program With and Without Video Support in Adolescents With Obesity: A Randomized Controlled Trial
Phase: NA
Conditions: Obesity
Sponsor: University of Sfax

 
 
 
 
Study Protocol and Statistical Analysis Plan 
 
 
 
Official Title: Effectiveness of an Adapted Basketball Program With and Without 
Video Support in Adolescents With Obesity: A Randomized Controlled Trial 
 
 
Brief Title: Effectiveness of Adapted Basketball Programs in Adolescents With Obesity 
(ABBA) 
 
Overall Status: Completed  
Study Start: June 1, 2024  
Primary Completion: January 1, 2025  
Study Completion: February 1, 2025  
Record Verification: June 2025 
 
Principal Investigator: Antonella Muscella  
University of Sfax 
University of Salento 
 
 

Study Description 
This randomized controlled trial (RCT) includes three parallel intervention arms designed to evaluate 
the effects of different basketball teaching programs on adolescents with obesity. The intervention 
spans seven consecutive weeks and consists of one structured basketball session per week, each 
lasting 60 minutes and delivered during regular physical education (PE) classes. A total of 55 
adolescents (33 females and 22 males), aged 15 to 17 years and classified as having moderate obesity 
(BMI: 30–34.9 kg/m²), were recruited from a secondary school in the Sidi Bouzid region of Tunisia. 
Participants were randomly assigned using a computer-generated sequence to one of the following 
groups:  
• ADAPT+VID Group (n = 19): An adapted basketball program enriched with pre-session 
instructional video summaries.  
• ADAPT Group (n = 18): The same adapted basketball program without video supplementation.  
• CONT Group (n = 18): A traditional basketball program without pedagogical modifications.  
 
Pre- (T0) and post-intervention (T1) assessments included: (i) anthropometric measurements (BMI), 
(ii) physical fitness tests, (iii) evaluations of technical basketball performance (passing, dribbling, 
shooting), and (iv) assessments of motivation. Motivation was assessed following the first and final 
sessions. Each session was structured into three phases: a standardized warm-up (15 minutes), a main 
instructional phase (40 minutes), and a cool-down period (5 minutes). The adapted program was 
tailored to the specific needs of adolescents with obesity by modifying drills, reducing 
competitiveness, and incorporating extended recovery and instructional periods. Pre-session videos 
in the ADAPT+VID group were uploaded to a private Facebook group 48 hours prior to each session 
and engagement was monitored. The study received approval from the appropriate institutional ethics 
committee and was conducted in accordance with the Declaration of Helsinki. Written informed 
consent was obtained from all participants and their legal guardians prior to enrollment. 
 
Approved Approval Number: 048/2022 by  Ethics Committee of the Faculty of Medicine of Sfax 
Faculty of Medicine of Sfax Phone: 74 241 888 
 
1. Study Design –  
Study Type: Randomized Controlled Trial (RCT) –  
Number of Arms: Three –  
- Allocation: Randomized – 
 Duration: 12-week intervention with 1-month follow-up 

 
2. Study Population 
Inclusion Criteria 
 Adolescents aged 15 to 17 years - BMI between 30-34.9 kg/m² (moderate obesity) - No 
musculoskeletal, neurological, or orthopedic conditions affecting physical performance in the last 6 
months - Normal or corrected-to-normal vision - Regular attendance in PE classes - Provided 
informed consent from legal guardians  
 
Exclusion Criteria:  
Musculoskeletal, neurological, or orthopedic disorders impairing physical performance - Visual 
impairments not corrected to normal vision - Irregular PE attendance - Participation in other 
structured physical activity programs 
 
3. 
Interventions 
Parallel Assignment Three-arm parallel-group randomized controlled trial. Participants were 
randomly assigned to one of three intervention arms: (i) an adapted basketball program with 
pre-session video summaries (ADAPT+VID), (ii) an adapted basketball program without 
video supplementation (ADAPT), or (iii) a traditional basketball program without specific 
pedagogical modifications (CONT). 
 
4. 
Outcome Measures 
a) Change in Physical Fitness (Spartacus Test), Week 0 to 13 2.  
b) Change in Technical Skills (passing, shooting, dribbling), Week 0 to 13 3.  
c) Change in Motivation (SIMS), Session 1 and 7 
d) BMI and Body Composition, Week 0 to 13 
Primary Outcome Measure: 1. Change in Body Mass Index (BMI) in kg/m² Body Mass Index 
(BMI) will be calculated using the formula: weight (kg) / height (m²). Weight will be measured using 
a calibrated digital scale and height using a wall-mounted stadiometer. BMI will be assessed at 
baseline and after 7 weeks to evaluate the effects of the basketball training intervention on body 
composition in adolescents with moderate obesity 
Secondary Outcome Measure: 2. Change in Cardiorespiratory Fitness Assessed by Intermittent 
Fitness Test 15-15. -Unit of Measure: Meters (total distance covered) (Spartacus Test). -Unit of 
Measure: Meters (total distance covered) Cardiorespiratory fitness will be assessed using the 15-15 
intermittent fitness test (Spartacus Test), a shuttle run test designed for overweight and obese 

adolescents. The test involves 15-second running intervals alternated with 15- second passive 
recovery over a 40-meter distance, with progressive speed increases starting at 5 km/h and increasing 
by 0.5 km/h per stage. The test concludes when the participant fails to maintain pace for two 
consecutive intervals or stops due to fatigue. The total distance covered will be used to estimate 
cardiorespiratory fitness (VO2peak). The Spartacus test is validated for this population and 
demonstrates high test-retest reliability  
(ICC > 0.90). 
Change in Situational Motivation (SIMS) Scores. -  
Motivation was assessed using the Situational Motivation Scale (SIMS), a validated 16-item 
questionnaire evaluating four subdimensions: intrinsic motivation, identified regulation, external 
regulation, and amotivation. Each item is rated on a 7-point Likert scale (1 = “does not correspond at 
all” to 7 = “corresponds exactly”). The average score for each subscale was calculated by averaging 
the corresponding four items (e.g., intrinsic motivation: items 1, 5, 9, 13). Higher scores indicate 
greater intensity of the respective motivation type. Units on the Situational Motivation Scale (SIMS), 
a 7-point Likert scale with minimum score 1 and maximum score 7.  
 
Change in Passing Accuracy in Basketball. – 
 Passing accuracy was evaluated using the AAHPERD Passing Test, which requires participants to 
perform chest passes at six wall targets within 30 seconds. Points are awarded based on precision and 
rule compliance. The total score is the sum of two scored trials, after one practice attempt. This test 
has demonstrated strong reliability (r = 0.84– 0.97). 
Change in Shooting Accuracy in Basketball – 
 Shooting accuracy was assessed using a standardized 10-shot free-throw test from the 4.57-meter 
line, using FIBAapproved size 6 basketballs. Each shot was scored using a 6-level scale (0–5 points), 
considering precision and shot quality. Total score was calculated by summing the scores of the 10 
attempts 
Change in Dribbling Performance in Basketball. – 
 Dribbling proficiency was evaluated using a timed zigzag cone course (5 cones, 2 meters apart). 
Participants completed a round-trip dribbling trial; the best of two attempts was retained. Performance 
was measured in seconds using a stopwatch accurate to 0.01 seconds. 
 
5.       Study Schedule  
- Week 0: Baseline  
- Weeks 1-12: Intervention  

- Week 13: Post-intervention  
- Week 16: Follow-up 
 
6. Data Collection and Management  
Standardized tools will be used. Data anonymized and stored on a secure server. Only authorized 
researchers will have access. 
 
7. Statistical analyses 
Statistical analyses were performed using Statistica 10 software (StatSoft, Krakow, Poland). The 
Shapiro-Wilk test confirmed that all variables satisfied the normality assumption and the Levene test 
confirmed the homogeneity of the data and therefore the suitability of the ANOVA model for 
intergroup comparisons. To analyze the changes in the parameters under examination, a repeated 
measures ANOVA was conducted involving three groups (ADAPT+VID, ADAPT, and CONT) and 
two measurement periods (before [T0] and after intervention [T1]). Effect sizes were calculated using 
partial eta squared (η²) and interpreted as small (0.01), medium (0.06), or large (0.14). Post-hoc 
comparisons were performed applying the Bonferroni correction to identify significant mean 
differences between groups.  
Additionally, effect sizes were calculated using Cohen’s d method, with interpretation according to 
Cohen’s classification: values of d ≥ 0.2 indicating a small effect, d ≥ 0.5 a moderate effect, and d ≥ 
0.8 a large effect. Statistical significance was set at p < 0.05. 
 
 

 
 
:…….                                              
 
 
 
 
MODELE DE CONSENTEMENT ECLAIRE  
DESTINE AU TUTEUR LEGAL DU PARTICIPANT MINEUR  
A UN PROJET DE RECHERCHE 
 
Titre du projet de recherche : Impact des différentes méthodes d'utilisation des outils 
technologiques éducatifs sur l'apprentissage des mouvements sportifs complexes pendant les 
cours d'éducation physique chez des élèves 
Investigateur Principal : 
Mohamed Abdelkader Souissi 
 
J’ai pris connaissance de la lettre d’information. Je déclare avoir obtenu des explications sur le 
projet et avoir reçu des réponses à mes questions. J’ai eu le temps nécessaire pour prendre une 
décision.  
 
J’ai été informé (e), oralement et par écrit, des objectifs du projet, de ses méthodes de recueil des 
données et de leur utilisation ainsi que des modalités de la participation de mon fils au projet. 
J’ai également été informé(e) : 
 
1- de la façon dont les chercheurs assureront la confidentialité des données concernant mon 
fils ainsi que des noms des personnes qui en sont responsables. 
2- Du droit de mon fils, de s’en retirer à tout moment si je le juge nécessaire sans que cela ne 
lui occasionne un quelconque préjudice. 
3- de mon droit de contacter, si j’ai des questions sur le projet, l’Investigateur Principal du 
projet Mohamed Abdelkader Souissi et numéro de téléphone 96366344. 
J’ai l’assurance que les propos recueillis au cours de cet entretien seront traités de façon 
confidentielle et anonyme. 
 
 
 
 
 
 
 
 
Je soussigné : 
Nom:……………………………………………………Prénom : …………………………………………. 
Tuteur du participant : 
Nom :………………………………………………  Prénom : ……………………………………………... 
En ma qualité de :…………………………………………………………………… ……….......................... 
Je consens à la participation de mon fils à ce projet de recherche aux conditions qui y sont énoncées.  
Je peux retirer mon fils de ce projet à n’importe quel moment, sans en donner les raisons, en faisant connaître 
ma décision à l’Investigateur Principal ou à son mandataire désigné. J’ai aussi été informé(e) que la  
participation de mon fils à ce projet pourra être interrompue sans mon accord préalable, et ce dans certains cas 
tels que définis dans la lettre d’information. 
 Je conserverai un exemplaire de la lettre d’information et du formulaire de consentement dûment rempli et 
signé par moi-même et l’Investigateur Principal. 
Pour les échantillons/ données collectés : 
• j’autorise leur transfert dans le cadre du présent projet vers une autre structure/un autre laboratoire :  
* En Tunisie :                           Oui                    Non 
* A l’étranger :                          Oui                    Non  
• 
j’autorise leur publication de façon anonyme dans les revues scientifiques :         Oui                      Non 
• je demande leur destruction à la clôture du présent projet :    Oui             Non 
•   j’autorise leur conservation après la clôture du projet en vue de leur réutilisation : 
                        * pour des projets portant uniquement sur le même thème (les indiquer) : Oui            Non 
………………………………………………………………………………………………………………… 
                        * ou pour d’autres projets de recherche :                                              Oui            Non 
J’ai compris que toute réutilisation ou transfert des échantillons / données de mon fils  ne se fera qu’après 
l’avis favorable d’un Comité d’Éthique. 
 
Signature : …………………………………………….Date : ……………………………………………… 
                                                                                                                    
 
                            
 
 

 
 
:…….                                              
 
 
 
 
A compléter par le participant mineur assenti: 
Je soussigné : 
Nom : ………………………………………………Prénom : ………………………………………… 
 
Je consens à participer à ce projet de recherche aux conditions qui y sont énoncées. 
Je peux me retirer de ce projet à n’importe quel moment, sans en donner les raisons, en faisant connaître ma 
décision à l’Investigateur Principal ou à son mandataire désigné.  
J’ai aussi été informé(e) que ma participation à ce projet pourra être interrompue sans mon accord préalable, et ce 
dans certains cas tels que définis dans la lettre d’information.  
Je conserverai un exemplaire de la lettre d’information et du formulaire de consentement dûment rempli et signé 
par moi-même et par l’Investigateur Principal. 
Pour mes données / échantillons collectés : 
• 
j’autorise leur transfert dans le cadre du présent projet vers une autre structure/un autre laboratoire  :  
* En Tunisie                               Oui                 Non 
* A l’étranger :                            Oui                 Non  
• 
j’autorise leur publication de façon anonyme dans les revues scientifiques :         Oui                      Non 
• 
je demande leur destruction à la clôture du présent projet :         Oui                      Non 
• 
j’autorise leur conservation après la clôture du projet en vue de leur réutilisation : 
              * pour des projets portant uniquement sur le même thème (les indiquer): Oui              Non 
……………………………………………………………………………………………………………………  
              * ou pour d’autres projets de recherche :                                                   Oui                Non  
 J’ai compris que toute réutilisation ou transfert de mes échantillons / données ne se fera qu’après l’avis favorable 
d’un Comité d’Éthique. 
 
Signature :……………………………………………………Date :………………………………………… 
                                                                                                                                               
 
 
 
 
 
 
 
 
 
 
 
 
 
N.B : Le témoin ne doit pas faire partie de l’équipe de recherche ou du corps médical et paramédical engagée 
dans 
le 
projet 
de 
recherche.
 
A compléter par le témoin* : non obligatoire 
Je soussigné(e) : 
Nom :……………………………………………………Prénom : ………………………………………… 
Témoin de l’entretien du tuteur du participant……………... avec l’investigateur Principal ou à son 
mandataire désigné. 
Je certifie que le tuteur du participant mineur à la recherche a reçu les explications relatives aux éléments 
contenus dans la lettre d’information et dans le formulaire de consentement, qu’il a obtenu des réponses aux 
questions qu’il a posées et qu’il demeure libre de mettre un terme à sa participation, et ce, sans préjudice. 
Témoin en sa qualité de :  
• Parent (e)  du participant :   Oui                  Non 
Si oui, préciser le lien de parenté :…………………………………………………………………. 
• Autres :             Préciser la qualité :…………………… ………………………………………………. 
Signature : ………………………………………............... Date : …………………………………………. 
 
              

 
 
:…….                                              
 
 
 
 
INFORMED CONSENT FORM 
FOR THE LEGAL GUARDIAN OF A MINOR PARTICIPANT 
IN A RESEARCH PROJECT 
 
Research Project Title: Impact of Different Methods of Using Educational Technology Tools 
on the Learning of Complex Sports Movements in Physical Education Classes Among Students 
Principal Investigator: : 
Mohamed Abdelkader Souissi 
 
I have read the information letter. I declare that I have received explanations about the project 
and answers to my questions. I have had sufficient time to make my decision. 
 
I have been informed, both orally and in writing, about the objectives of the project, its data 
collection methods and usage, as well as the conditions of my child's participation in the project. 
 
1. How the researchers will ensure the confidentiality of my child's data, as well as the 
names of the individuals responsible for it. 
2. My child's right to withdraw from the project at any time if I deem it necessary, 
without any consequences or disadvantages. 
3. My right to contact the Principal Investigator of the project, Mohamed Abdelkader 
Souissi, at the phone number 0021696366344 if I have any questions about the 
project. 
I am assured that all information collected during this interview will be treated confidentially 
and anonymously. 
 
 
 
 
 
 
 
 
I, the undersigned: 
Name: …………………………………… First name: ………………………………………… 
Legal guardian of the participant: 
Name: …………………………………… First name: ……………………………………………… 
In my capacity as: …………………………………………………………………………….......................... 
I consent to my child's participation in this research project under the stated conditions. 
I understand that I may withdraw my child from this project at any time, without providing a reason, by informing the 
Principal Investigator or their designated representative of my decision. I have also been informed that my child's 
participation in this project may be discontinued without my prior consent in certain cases, as defined in the 
information letter. 
I will keep a copy of the information letter and the consent form, duly completed and signed by both myself and the 
Principal Investigator. 
For the collected samples/data: 
• I authorize their transfer, within the framework of this project, to another institution/laboratory:  
* In Tunisia::                           Yes                    No 
* Abroad:                               Yes                   No  
• I authorize their anonymous publication in scientific journals: ☐ Yes ☐ No 
• I request their destruction at the conclusion of this project: ☐ Yes ☐ No 
• I authorize their retention after the conclusion of the project for potential reuse: 
• 
For projects related exclusively to the same theme (please specify): ☐ Yes ☐ No 
………………………………………………………………………………………………………
…… 

 
 
:…….                                              
 
 
 
• 
Or for other research projects: ☐ Yes ☐ No 
I understand that any reuse or transfer of my child's samples/data will only occur after receiving approval 
from an Ethics Committee. 
 
Signature : …………………………………………….Date : ……………………………………………… 
                                                                                                                    
 
               
 
 
To be completed by the minor participant 
I, the undersigned: 
Name: ……………………………………………… 
First Name: ………………………………………… 
I consent to participate in this research project under the conditions outlined. 
I understand that I may withdraw from this project at any time, without providing a reason, by informing 
the Principal Investigator or their designated representative. 
I have also been informed that my participation in this project may be interrupted without my prior 
consent, in certain cases as defined in the information letter. 
I will keep a copy of the information letter and the consent form, duly completed and signed by myself 
and the Principal Investigator. 
For my data/samples collected: 
• I authorize their transfer, within the framework of this project, to another institution/laboratory: 
• 
In Tunisia: ☐ Yes ☐ No 
• 
Abroad: ☐ Yes ☐ No 
• I authorize their anonymous publication in scientific journals: ☐ Yes ☐ No 
• I request their destruction at the conclusion of this project: ☐ Yes ☐ No 
• I authorize their retention after the conclusion of the project for potential reuse: 
• 
For projects related exclusively to the same theme (please specify): ☐ Yes ☐ No 
………………………………………………………………………………………………………
…… 
• 
Or for other research projects: ☐ Yes ☐ No 
I understand that any reuse or transfer of my samples/data will only occur after receiving approval from 

 
 
:…….                                              
 
 
 
an Ethics Committee. 
Signature: ……………………………………………… 
Date: …………………………………………… 
 
 
 
 
 
 
 
 
Note: The witness must not be part of the research team or the medical and paramedical staff involved 
in the research project. 
 
 
 
To be completed by the witness* (optional): 
I, the undersigned: 
Name: …………………………………………………… 
First Name: ………………………………………… 
Witness to the meeting between the legal guardian of the participant …………… and the Principal 
Investigator or their designated representative. 
I certify that the legal guardian of the minor participant in the research has received explanations 
about the elements contained in the information letter and the consent form, that they have 
obtained answers to the questions they asked, and that they remain free to terminate their 
participation, without any prejudice. 
Witness in their capacity as: 
• Parent of the participant: ☐ Yes ☐ No 
If yes, specify the relationship: ……………………………………………………………………. 
• Other: Specify the role: …………………………………………………………………………. 
Signature: ………………………………………............... 
Date: ………………………………………….