Reliability and Validity of Physical Fitness Field-Based Tests in Down Syndrome: A Systematic Review

Swim, Strength, or Combined Programs: Effect on Health-Related Physical Fitness in Adolescents With Down Syndrome

The adolescent population with Down syndrome (DS) appears to show higher levels of body fat and lower levels of cardiorespiratory fitness or muscle strength than their peers without disabilities. There is a need to create physical activity programs to improve these data. The aim of this research was to determine the effects of a 16-week swimming program, strength program, and combined program (swimming and strength training) on body composition and health-related physical fitness on adolescents with DS and to assess whether there are differences in the results of the different training programs. Forty-five adolescents (17 female and 28 male; average age 15.5 [1.53] years) with DS were recruited and randomized to three groups (swim [n = 15], strength [n = 15], and combined [n = 15]). Results showed that the swim group had significant improvements in all health-related physical fitness variables and there was an improvement in some body-composition variables (p < .05). The strength and combined groups obtained minor improvements in the variables analyzed. In summary, a 16-week swim program consisting of three sessions of 60 min is able to improve levels of body composition and health-related physical fitness in adolescents with DS. The swim training program seems to be more effective in improving body composition and health-related physical fitness than the strength or combined program. These findings could be useful in different special-education centers due to the predisposition shown by the population with DS to this sport modality.

DSFit: a feasibility pilot study of a group exercise programme for adolescents with Down syndrome

BACKGROUND

While past research has underscored the benefits of physical activity for people with Down syndrome (DS), exercise programming that is customised to and/or accessible for children and adolescents with DS is limited. The objectives of this pilot were to (1) develop and refine an engaging exercise programme for adolescents with DS, called DSFit; (2) assess feasibility over the course of two pilot iterations; and (3) examine participant and parent feedback regarding exercise priorities and the DSFit exercise programme.

METHOD

Participants were 12 unique adolescents (ages 11-17 years) with DS. Both pilot iterations of the programme consisted of weekly group exercise sessions and home exercises to complete between sessions. Physical fitness and mood/behaviour were assessed at baseline and at the end of the intervention. Parent and child goal-setting and feedback surveys were collected before and immediately after the intervention, and a 2-month follow-up assessed physical activity and exercise attitudes. Quality improvement methodology and participant/parent feedback were used to modify the second iteration to better meet the needs of our study population. Changes included an expanded age range, modified physical assessments, decreased burden of questionnaires, and video-recorded group sessions for at-home practice.

RESULTS

Physical fitness evaluation of core/trunk strength and stability, lower- and upper-body strength, balance, flexibility, and walking was feasible, and the majority of participants in both pilot iterations improved in at least one category of physical assessment between baseline and end of intervention. Assessment of symptoms of anxiety, depression and behavioural concerns was also feasible and results showed slight improvements in some participants. Both parent and participant feedback indicated that participants enjoyed the programme and appreciated the opportunity to start developing sustainable exercise habits.

CONCLUSIONS

A group exercise programme with supported at-home components is feasible for adolescents with DS. Future iterations will continue to examine programme efficacy with improved fitness testing and larger sample sizes. Strategies to increase at-home compliance, such as virtual sessions and parent/guardian-guided physical fitness assessments, will also be incorporated.

A comparison of the physical fitness of individuals with intellectually disabilities autism spectrum disorders and Down syndrome diagnosis

Introduction: This article reports the physical abilities and physical wellness of three groups of children with different neurodevelopmental disabilities: Autism, Down Syndrome and Intellectual Disability. Methods: The causal-comparative research method was implemented in this study. The participants comprised 32 students with moderate intellectual disabilities, 18 with autism spectrum disorder, and 22 with down syndrome. The body mass index (BMI), flexibility, standing long jump, sitting height, stroke length, and medicine ball throwing levels were measured for physical fitness, and the groups were compared afterward. The Kruskal Wallis-H Test and Mann-Whitney U Test were applied to determine the differences between the groups' physical fitness averages for the statistical analysis. Results: Statistically significant differences were obtained in BMI, standing long jump, stroke length, and medicine ball throwing variables (p < 0.05). However, no statistically significant difference was discovered for the flexibility and sitting height variables (p > 0.05). The BMI, sitting height, and stroke length levels for the group with autism spectrum disorder were higher than the other groups, as the flexibility levels of the group with down syndrome were higher than the other groups. Students with intellectual disabilities were demonstrated to have better values than other groups regarding standing long jump and medicine ball throwing performances. Conclusions: Objective information about the physical fitness of individuals with children with different neurodevelopmental disabilities was obtained. In addition, the data obtained with these children will contribute to future plans for movement training as well as the content and frequency of the interventions, and will guide the development of new strategies to develop physical abilities and physical wellness.

Causes and Preventive Measures of Sports Injuries in Physical Fitness Tests in Colleges and Universities Based on Biological Characteristics

Biological characteristics refer to the morphological and physiological characteristics exhibited by individual organisms. The indicators of individual biological characteristics mainly include physical indicators such as height, weight, chest circumference, and health-related physical indicators such as blood pressure, grip strength, and vital capacity. This article mainly introduces the cause analysis and preventive measures of a physical fitness test in colleges and universities based on biological characteristics and intends to provide ideas and directions for the cause analysis and preventive measures of a physical fitness test in colleges and universities. This paper proposes a research method for the cause analysis and preventive measures of sports injuries in college physical fitness tests based on biological characteristics. Research experiments on the cause analysis and preventive measures of sports injuries in the physical fitness test of colleges and universities. The experimental results in this paper show that the most frequent cause of sports injuries among boys is lack of self-protection awareness, with a probability of 24.24%; among girls, the most frequent cause of sports injuries is insufficient flexibility, with a probability of 22.86%.

Feasibility and reliability of a physical fitness tests battery for adults with intellectual disabilities: The SAMU DIS-FIT battery

BACKGROUND

People with intellectual disability (ID) have lower performances in physical fitness (PF) tests than people without ID, a situation that exists during all the life stages. However, the assessment of the FP of persons with ID often uses instruments that were designed for non-disabled people.

AIM

To check the reliability and feasibility of 8 PF tests in adults with mild to moderate ID.

METHODS

A cross-sectional study was carried out with a test-retest design in a maximum interval of 2 weeks with 240 adults (160 men and 80 women) with mild to moderate ID in order to assess the feasibility and reliability of the following 8 tests: body mass index (BMI), waist circumference (WC), the timed up & go test (TUG), the deep trunk flexion test (DTF), the hand grip test (HG), the timed stand test (TST), the 30-s sit-up (SUP) test, and the 6-min walk test (6MWT). The complete battery was called the SAMU-Disability Fitness Battery (SAMU-DISFIT). The psychometric properties of the battery, feasibility, reliability, the standard error of the measurement (SEM) and the minimal detectable change (MDC) were calculated.

RESULTS

The TUG, DTF, HG, TST, and 6MWT showed an intraclass correlation coefficient (ICC) from fair to high reliability. Only the SUP test in men had an ICC lower than 0.7 and high SEM values.

CONCLUSION

The psychometric properties provide robust data on the use of the SAMU-DISFIT battery in people with ID and can be considered a useful tool for assessing PF in adults with mild to moderate ID in future research.

Feasibility and Reliability of a Physical Fitness Test Battery in Individuals with Down Syndrome

Background: Down syndrome (DS) is a genetic disorder that occurs because of an abnormal division between cells that results in an extra copy of chromosome 21. Some studies show that physical exercise in people with DS increases some cognitive capacities, such as memory, and improves the quality of life. Aim: The main aim of this study was to perform an analysis of the reliability and feasibility of the SAMU-Disability Fitness (DISFIT) battery in adults with DS. Methods: A cross-sectional study with a test–retest design was performed in a maximum interval of 2 weeks in 37 subjects (11 women and 26 men) aged between 21 and 58 years old with DS. Eight field-based fitness tests were proposed to assess the physical fitness (PF) of adults with DS: Body Mass Index (BMI), Waist Circumference (WC), the Timed Up and Go test (TUG), the Deep Trunk Flexibility test (DTF), the Hand Grip test (HG), the Timed Stand Test (TST), the 30-s Sit-Up (SUP) and the 6-Min Walk Test (6MWT). Results: The intra-class correlation coefficient (ICC) in all the tests was good and high (>0.80), except for the 6MWT, whose reliability was fair. Conclusion: The SAMU-DISFIT battery is a reliable and feasible physical fitness battery which has been created with the purpose of establishing tests which measure the four basic components of PF (flexibility, cardiorespiratory fitness, musculoskeletal fitness and motor fitness) in adults with DS.

Reliability and convergent validity of the 6-min run test in young adults with Down syndrome

BACKGROUND

There is limited evidence about the psychometric properties of field tests to measure cardiorespiratory fitness in people with Down syndrome.

OBJECTIVE

This study aimed at analyzing the reliability and convergent validity of the 6-min run test when performed by young adults with Down syndrome (DS).

METHODS

In a cross-sectional design fifty-one young adults with DS (mean age 26.20 ± 7.14 years; 54% women) performed the 6-min run test and the 16-min shuttle run test twice with a one week-interval between test and retest.

RESULTS

The 6-min run test offered high reliability for the distances covered (ICC: 0.974; 95% CI: 0.955-0.985) and good reliability when comparing peak heart rate values obtained in the test and retest (ICC: 0.870; 95% CI: 0.772-0.926). A significant correlation between the 6-min run test and the 16-min shuttle run test was observed for the test (r = 0.705; Sig = 0.001), and retest phases (r = 0.651; Sig = 0.001). The relationship between the estimated maximal oxygen consumption (VO₂ max) peak after the performance of the 16-min shuttle run test and the distance covered by the 6-min run test was statistically significant (r > 0.7). No significant differences were found between the equations that estimate VO₂ peak for both tests.

CONCLUSIONS

These findings suggest that the 6-min run test shows high test/retest reliability and moderate to moderately high convergent validity when performed by adults with DS.