The aim is to evaluate the effects of manual gravel extraction on body composition and spirometric values in divers and screeners. Our study is of an experimental and exploratory type, concerned 30 gravel workers distributed as follows: 15 divers and 15 screeners. The variables were carried out before and after four months of months of activity. The results show that the practice of manual gravelling has more significant effects in divers than in scouts on anthropometry (weight 54.42 ± 5.48 kg vs 58.62 ± 3.83 kg; Body Mass Index, 19.64 ± 1.31 kg·m-2 vs 20.46 ± 1.89 kg·m-2), body composition (fat mass 16.70 ± 6.57 vs 20.44 ± 2.06; lean mass 40, 74 ± 5.09 vs 39.90 ± 8.87; Mineral Bone Mass 30.99 ± 7.31 vs 31.87 ± 4.87; Water Mass 4.90 ± 3.13 vs 5.44 ± 0.79) and values spirometry (Forced Respiratory Flow in 25 tiers: 2.87 ± 1.35 vs 4.36 ± 1.89). These results may explain the fact that divers have specific spots with higher intensities and volumes than in screeners. This mercantile？activity requires super maximum efforts and becomes constraining. This study？deserves to be continued in the years to come on the diet and energy expenditure of these practitioners.
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