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Percent change in muscle tone of leg muscles (A), superficial neck and upper trunk muscles (B) and deep back muscles (C) 6 h following the onset (D1), on day 3 of immersion (D3), in recovery period on R0 (6 h following the end of DI) and on R+1. Data are mean ± SEM. *p ≤ 0.05 vs. B-1.
