Exercise interventions for physical fitness
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Exercise Interventions and Physical Fitness: Key Modalities and Outcomes
School-Based Exercise Interventions for Children and Adolescents
School-based exercise programs have been shown to improve various aspects of physical fitness in children and adolescents. High-intensity interval training (HIIT) is particularly effective for reducing body mass index, increasing cardiorespiratory fitness (VO2max), and improving sprint performance. Aerobic training is most effective for reducing waist circumference, while active video games can enhance jumping and shuttle running abilities. Strength training best improves standing long jump performance, and combined training is most effective for reducing body fat percentage and increasing push-up repetitions. These findings suggest that different exercise modalities can be tailored to target specific fitness outcomes in youth populations .
However, the benefits of these interventions are not distributed equally. Girls and older students tend to benefit less than boys and younger students. Those with lower initial fitness or higher baseline physical activity see greater improvements. The overall effect of school-based interventions on cardiorespiratory fitness and physical activity is modest, with only small increases in daily moderate and vigorous activity. Promoting more vigorous intensity activities and targeting under-served groups may enhance the effectiveness of these programs .
Exercise Interventions in Preschoolers
In preschool-aged children, exercise interventions have small but positive effects on body mass index, waist circumference, body fat percentage, cardiorespiratory fitness, muscular strength, and speed-agility. However, these interventions do not significantly reduce blood pressure. Programs focusing solely on physical exercise, rather than combining with other interventions, tend to yield better results for weight and fitness outcomes .
Exercise and Physical Fitness in Adults
For adults, interventions designed to promote physical activity have a moderate effect on self-reported activity levels and cardiorespiratory fitness, though they are less effective at helping individuals reach specific activity thresholds. The most successful interventions are those that are self-directed but include some professional guidance and ongoing support .
In adults with asthma, supervised aerobic exercise programs, often combined with resistance or stretching exercises, significantly improve cardiorespiratory and functional fitness. These programs are most effective when performed at moderate-to-vigorous intensity for 30–45 minutes, three times per week .
Exercise Interventions for Special Populations
Cancer Patients and Survivors
Exercise interventions in cancer patients and survivors, especially those involving resistance or combined aerobic and resistance training, lead to improvements in cardiorespiratory fitness, muscle strength, fatigue, and quality of life. Supervised programs with frequent sessions and longer durations are particularly effective. Younger patients and those receiving aerobic exercise benefit most in terms of aerobic fitness, while resistance training is especially beneficial for muscle strength 3410.
People Living with HIV/AIDS
Combined exercise and dietary interventions in people living with HIV/AIDS improve physical fitness, reaction speed, grip strength, and quality of life. These interventions also positively affect stress, self-confidence, and motivation for exercise, though they do not significantly change body composition over short periods .
Physically Vulnerable Groups
For physically vulnerable students, self-exercise, contract exercise, and prescription exercise all contribute to improvements in both physical fitness and mental health. Prescription exercise is particularly effective for physical fitness, while contract exercise has a stronger impact on mental health .
Conclusion
Exercise interventions, whether in schools, clinical settings, or special populations, consistently show positive effects on physical fitness. The most effective programs are those that are supervised, tailored to the population’s needs, and include a mix of aerobic and resistance training. Targeted strategies are needed to ensure equitable benefits across different groups, especially for those who are less likely to respond to standard interventions. Overall, regular, structured exercise remains a cornerstone for improving physical fitness and related health outcomes across the lifespan 1234+6 MORE.
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