alexa Effects of cold modality application with static and intermittent pneumatic compression on tissue temperature and systemic cardiovascular responses.
Nursing

Nursing

Journal of Community & Public Health Nursing

Author(s): Holwerda SW, Trowbridge CA, Womochel KS, Keller DM

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Abstract BACKGROUND: In the therapeutic setting, cryotherapy with varying levels of intermittent cyclical compression often replaces an ice bag and elastic wrap. However, little is known about the cardiovascular strain and tissue temperature decreases associated with cooling and intermittent compression. HYPOTHESIS: The authors hypothesized that higher levels of intermittent compression will result in greater reductions of tissue temperature and that all cold modalities will cause acute increases in cardiovascular strain. DESIGN: Experimental crossover repeated measure design. METHODS: Ten healthy subjects (23 ± 3 years) volunteered for 4 cryotherapy sessions (30-minute treatments with 30-minute passive recovery). Treatments included ice with elastic wrap and Game Ready (GR) with no, medium (5-50 mmHg), and high compression (5-75 mmHg). Throughout the experiment, oral, skin surface, and intramuscular quadriceps temperatures were measured along with mean arterial pressure, heart rate, rate pressure product, forearm blood flow, and forearm vascular conductance. RESULTS: Mean arterial pressure increased up to 5 minutes (P < 0.05). Forearm blood flow and forearm vascular conductance decreased after baseline (P < 0.05), but there were no differences between treatments. Peak intramuscular changes from baseline were -14 ± 2°C (ice), -11 ± 6°C (GRHIGH), -10 ± 5°C (GRMED), and -7 ± 3°C (GRNO). Ice cooled the muscle the most, while GR with medium and high compression cooled more than GR without compression (P < 0.05). CONCLUSIONS: The application of cold and intermittent pneumatic compression using GR did not produce acute cardiovascular strain that exceeded the strain produced by standard ice bags/elastic wrap treatment. Greater temperature decreases are achieved with medium- and high-pressure settings when using the GR system. CLINICAL RELEVANCE: Type of cold and amount of compression affect tissue cooling in healthy lean subjects. All tested cold modalities caused acute increases in cardiovascular strain; however, these increases are no more than what healthy subjects experience with the onset of exercise.
This article was published in Sports Health and referenced in Journal of Community & Public Health Nursing

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