The overall aim of this study is, to evaluate the effectiveness of repeated cold- and warm water immersion on performance recovery after muscle damage.
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.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
NONE
Enrollment
30
This information can be found the description of the experimental arm.
This information can be found the description of the experimental arm.
This information can be found the description of the experimental arm.
University of Applied Sciences and Arts of Southern Switzerland
Landquart, Kanton Graubünden, Switzerland
Maximum Voluntary Isometric Contraction (N)
maximun voluntary isometric contraction of the knee extensor muscle will be assessed.
Time frame: baseline to 72 hours
Delayed Onset of Muscle Soreness (DOMS)
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
Time frame: baseline to 72 hours
Muscle Swelling
swelling of the knee extensor muscle will be performed using a ultrasound device.
Time frame: baseline to 72 hours
Creatine-kinase (U/l)
using a blood sample (6 ml), creatine-kinase will be assessed
Time frame: baseline to 72 hours
Muscle Blood Oxygenation
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 (%)
Time frame: through recovery intervention up to 30 minutes
Skin Temperature (°C)
Skin temperature will be measured using a near infrared thermography camera
Time frame: through recovery intervention up to 30 minutes
Core Temperature (°C)
core temperature will be measured using temperature pill that will provide real time values from the gastrointestinal region
Time frame: through recovery intervention up to 30 minutes
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