Cold and Warm Water for Performance Recovery

Not Applicable

Completed

Lead Sponsor: University of Applied Sciences and Arts of Southern Switzerland

Brief Summary: The overall aim of this study is, to evaluate the effectiveness of repeated cold- and warm water immersion on performance recovery after muscle damage.

Detailed Description: Participants perform a muscle-damage protocol, which comprises 5x20 drop jumps. After the exercise protocol is finished, the participants will undergo one of three recovery interventions. Cold-water immersion, Warm-water immersion or the control-intervention. During the exercise protocol and the recovery intervention following parameters will be assessed: Blood oxygenation, Muscle oxygenation, heart-rate, skin temperature and core temperature.

Then, performance recovery will be assessed during the following 72 hrs (in a 24 hrs interval).

At each time-point, following measurements will be conducted: vertical-jump performance, maximum voluntary isometric contraction of the m.quadriceps femoris muscle, muscle swelling and delayed-onset of muscle soreness.

Recruitment & Eligibility

Inclusion Criteria

Exclusion Criteria

Primary Outcome Measures

Name	Time	Method
Maximum Voluntary Isometric Contraction (N)	baseline to 72 hours	maximun voluntary isometric contraction of the knee extensor muscle will be assessed.
Delayed Onset of Muscle Soreness (DOMS)	baseline to 72 hours	delayed onset of muscle soreness will be measured using a 0-10 scale, where 0 indicated no soreness and 10 indicates maximum soreness of the knee extensor muscles
Muscle Swelling	baseline to 72 hours	swelling of the knee extensor muscle will be performed using a ultrasound device.
Creatine-kinase (U/l)	baseline to 72 hours	using a blood sample (6 ml), creatine-kinase will be assessed
Muscle Blood Oxygenation	through recovery intervention up to 30 minutes	Muscle oxygenation saturation (SmO2) of the knee extensor muscle will be measured using near-infrared spectroscopy device. Oxygenated haemoglobin (oxyHb), deoxygenated haemoglobin (deoxyHb) and total haemoglobin (TotHb) were assessed in arbitrary units and SmO2 was calculated as oxyHb/TotHb x 100 value (%)
Skin Temperature (°C)	through recovery intervention up to 30 minutes	Skin temperature will be measured using a near infrared thermography camera
Core Temperature (°C)	through recovery intervention up to 30 minutes	core temperature will be measured using temperature pill that will provide real time values from the gastrointestinal region

Secondary Outcome Measures

Name	Time	Method

Locations (1): University of Applied Sciences and Arts of Southern Switzerland
🇨🇭
Landquart, Kanton Graubünden, Switzerland
University of Applied Sciences and Arts of Southern Switzerland
🇨🇭Landquart, Kanton Graubünden, Switzerland