Validation of a personal fluid loss monitor
| Autor: | Richardson Mt, James M. Green, Eric J. Jones, Catalina Casaru, Richard G. Lomax, Wickwire J, P. A. Bishop, M. Curtner-Smith |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Adult
Male medicine.medical_specialty Heat injury Dehydration business.industry Physical Therapy Sports Therapy and Rehabilitation Water-Electrolyte Balance medicine.disease United States Surgery Animal science Body Water Weight loss medicine Exercise Test Humans Orthopedics and Sports Medicine medicine.symptom business Monitoring Physiologic |
| Zdroj: | International journal of sports medicine. 29(2) |
| ISSN: | 0172-4622 |
| Popis: | Dehydration raises heat injury risk and reduces performance (2, 5, 6). The purpose was to validate the Hydra-Alert Jr (Acumen). The Hydra-Alert was tested in two exercise/clothing conditions. Participants wore it while wearing exercise cloth- ing and exercising at a self-selected intensity (n = 8). Others wore the Hydra-Alert while wear- ing a ballistic-vest and performing an industrial- protocol (n = 8). For each condition, the Hydra- Alert was tested on two occasions (T1 and T2). The Hydra-Alert was tested against nude weight loss for both conditions. The Hydra-Alert had low test-retest reliability for both conditions (average absolute value of the error between Hy- dra-Alert outputs of T1 and T2 = 0.08 ± 0.08 per- centage points). With exercise-clothing, the Hy- dra-Alert evidenced low-moderate correlations between percent nude weight loss and Hydra- Alert output at 20 min (r = 0.59-T1, p = 0.13; r = 0.12-T2, p = 0.78), at 40 min (r = 0.93-T1, p = 0.001; r = 0.63-T2, p = 0.10), and at ~ 2% weight loss (r = 0.21-T1 and T2, p = 0.61 and 0.62, respectively). The correlation at 40 min during T1 fell during T2 suggesting the Hydra-Alert was in- consistent. When wearing a ballistic-vest, the Hydra-Alert had poor validity (T1: r = - 0.29 (p = 0.48) for weight loss vs. monitor; T2: r = 0.11 (p = 0.80)). At the higher levels of dehydration (~ 2%), the Hydra-Alert error was so high as to render its readings of little value. In some cases, the Hydra-Alert could lead to a false level of se- curity if dehydrated. Therefore, the Hydra-Alert is of little use for those who want to measure their fluid loss while exercising in the heat. " hydration monitor l " dehydration l " hydration |
| Databáze: | OpenAIRE |
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