The 100-Days: Physical Exercise and Challenges to Assess, Maintain and Improve Physical Fitness During Lockdown

The COVID-19 pandemic reduced physical activity and increased sedentary behavior, raising health risks. To combat this, a 100-day training program was designed to maintain and improve fitness during lockdown. This program, which included a challenge with physical assessments and online sessions, aimed to enhance fitness and motivation. Methods: Twenty participants (mean age 45.2 ± 12.7 years) with good baseline fitness completed strength, endurance, coordination, and flexibility exercises over 100 days, with monthly challenges. Fitness was assessed at baseline (T0), mid-program (T1), and completion (T2). Results: Males initially showed higher BMI and mild cardiovascular risks. Flexibility improved for both genders, with females increasing from 12.5 ± 4.51 cm to 14.8 ± 6.65 cm and males from 4.4 ± 6.33 cm to 8.8 ± 10.69 cm. Males’ vertical jump height increased from 20.7 ± 13.05 cm to 28.2 ± 10.49 cm. In the challenge, push-up repetitions rose for both genders, achieving excellent scores (>24 reps for females, >25 for males). Males advanced in the repeated crunch test, while females consistently excelled in the repeated squat. Weight and BMI reductions were also observed, particularly in overweight males. Conclusions: The 100-day training program, combined with the challenge, effectively sustained physical fitness and motivation among participants during pandemic-related restrictions. Notable strength and endurance improvements were observed across both genders, reinforcing the potential of interactive, remote training programs to promote physical health in periods of limited activity.