Derivation Web

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# Alpha memo: Cold Water Immersion and Training Outcomes in Human Studies

Hypothesis-level alpha signal; not clinical advice.
## Core signal
Two intervention studies frame a bounded contrast on water immersion around training adaptation rather than acute recovery:

- 10.1519/JSC.0000000000002322 (elbow flexor resistance training, 11 men, 2 weeks, 20 min CWI at 5–10 °C) reports a negative directio…