[Purpose] This study aimed to examine the thermal skin responses (thermal buildup and
retention rate) to instrument-assisted soft tissue mobilization (IASTM) procedures applied
on hamstrings at different angles. [Participants and Methods] Thirty university students
(age: 20 ± 4 years, weight: 70.61 ± 9.11 kg, height: 168.5 ± 7.5 cm) received three
sessions of 10-min Ergon
®
IASTM treatment on their dominant limbs’ hamstrings
at 20°, 60°, and 90° application angles, respectively. The skin temperature was measured
with a thermometer immediately before and after treatment, and every minute thereafter
until it returned to the baseline value. [Results] IASTM resulted in a significant
increase in skin temperature irrespective of the application angle. The thermal retention
rate produced by the treatment at a 90° angle was significantly higher than that produced
by the 20° application angle (78.9 vs. 64.53 min). No significant differences were
observed between the 60° and 90° angle applications (72.5 vs. 78.9 min). [Conclusion]
IASTM application at 60° and 90° angles can increase and retain the hamstring’s skin
temperature for more than an hour, creating the conditions for potential positive
adaptations to local metabolism and muscle tone.
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