Background. To estimate the level of PA before and during quarantine, in both sexes, according to four categories (vigorous, moderate, walking and sitting) and to provide suggestions to reduce the negative effects of the latter (quarantine) on the health of the Algerian population. Methods. A sample of 1210 of Algerian males and females, age around 18 to 60 years old have been taken a part in this study: males: 991–81,9 %, females: 219–18,1 %. Interviewed by IPAQ (short form) to estimate the impact of confinement on Algerians gender lifestyle physical activity. Results. We confirmed that sitting long hours was the main problem for two sexes. As well as males are more active than females in all comparisons practiced. Conclusion. Confinement is a fundamental safety step to avoid the spreading of Covid-19. Whereas some guidelines for avoiding prolongation are requested to reduce inactivity and sedentary lifestyle, especially for our females. Support by health and exercise videos broadcast by national television in order to improve physical activity and routinely exercising in a safe home environment. Support in this study, as an important governmental policy, helps their citizens for healthy living during the corona virus crisis. Admitted as guidelines for our females, permitting them to maintain their physical function and mental health during this critical period.

Purpose: this study checks the effects of the reathletization protocol following anterior cruciate ligament (ACL) reconstruction in each of the anthropometric parameters, muscle strength and aerobic capacity. Material & Methods: we present a 12-weeks case-study account for an Algerian professional soccer player participated in this study (age: 21 years, height: 1.71 m, weight: 62.5 kg, body mass index: 21.37 and %body fat: 9.17%). Results: the authors have comparing the results recorded in measurements and tests before and after 12-weeks of reathletization protocol applied to the professional soccer player, which was intended. First: anthropometric parameters; weight increased by (+3.6 kg, +5.76%) and body mass index by (+1.23, +5.75%). % body fat had decreased by (-1.8 kg, – 19.62%). Their thigh perimeter at 10 and 15 cm from the patella had increased respectively ((injured side; at 10 cm (+4 cm, 9.75%) and at 15 cm (3cm, 6.83%)), ((healthy side; at 10 cm (+2.5 cm, 5.61%) and at 15 cm (2.5 cm, 5%)). Second: muscle strength tests increased in; Prone plank test (1.14 min, 52.77%). Countermovement jump (14.68 cm, 45.66%). Single-leg jump (healthy side; 0.57 cm, 39.04%), (healthy side; 0.1 cm, 4.76%) and Two legs jump increased by (0.43 cm, 22.63%). Third: aerobic capacity; intermittent fitness test increased in: IFT; (2.5 km/h, 14.28%) and maximal O2 consumption (5.65 mL/min/kg, 11.85%). Heart rate measurements decreased in maximum HR (10 bpm, 5.26%), and resting HR (10 bpm, 16.66%). Conclusions: after 12-weeks of reathletization protocol, the statistics values indicated a greater significant improvement in the performances of the soccer player. A study with larger population should be undertaken.

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