Key result
Knee-high compression socks show no effect on cardiac output or metabolic parameters during submaximal running.
Why the study?
The effects of different levels of compression applied by knee-high socks on cardio-respiratory and metabolic parameters during submaximal exercise were unclear.
Do knee-high compression socks applying different levels of pressure alter cardio-respiratory and metabolic parameters during submaximal running in well-trained male endurance athletes?
Do knee-high compression socks applying different levels of pressure alter cardio-respiratory and metabolic parameters during submaximal running in well-trained male endurance athletes?
Effect estimate: effect sizes 0.00-0.65
p-value: p=0.29
Increasing levels of compression from knee-high socks do not affect cardio-respiratory or metabolic parameters during submaximal exercise in well-trained athletes.
No performance benefit during submaximal running in athletes; leaves open effects in venous disease or other populations.
OBJECTIVE: The effects of knee-high socks that applied different levels of compression (0, 10, 20, 30 and 40 mmHg) on various cardio-respiratory and metabolic parameters during submaximal running were analysed. METHODS: Fifteen well-trained, male endurance athletes (age: 22.2 ± 1.3 years; peak oxygen uptake: 57.2 ± 4.0 mL/minute/kg) performed a ramp test to determine peak oxygen uptake. Thereafter, all athletes carried out five periods of submaximal running (at approximately 70% of peak oxygen uptake) with and without compression socks that applied the different levels of pressure. Cardiac output and index, stroke volume, arterio-venous difference in oxygen saturation, oxygen uptake, arterial oxygen saturation, heart rate and blood lactate were monitored before and during all of these tests. RESULTS: Cardiac output (P = 0.29) and index (P = 0.27), stroke volume (P = 0.50), arterio-venous difference in oxygen saturation (P = 0.11), oxygen uptake (P = 1.00), arterial oxygen saturation (P = 1.00), heart rate (P = 1.00) and arterial lactate concentration (P = 1.00) were unaffected by compression (effect sizes = 0.00-0.65). CONCLUSION: This first evaluation of the potential effects of increasing levels of compression on cardio-respiratory and metabolic parameters during submaximal exercise revealed no effects whatsoever.
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Sperlich et al. (2011) studied Healthy athletes (n=15). Knee-high compression socks vs. Without compression socks (0 mmHg) was evaluated on Cardiac output (effect sizes 0.00-0.65, p=0.29). Knee-high compression socks applying up to 40 mmHg of pressure did not affect cardiac output (P=0.29), oxygen uptake (P=1.00), or other metabolic parameters during submaximal running in male athletes.
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