119 Abstracts THERMAL RESPONSE OF THE SKIN TEMPERATURE ON MUSCLE AND JOINT BODY AREAS AFTER STRENGTH TRAINING BY INFRARED THERMOGRAPHY J.C.B. Marins 1 , I. Fernández-Cuevas 2 , J. Ribot-Serrano 2 , M.A. García-Concepción 2 , P. Gómez Carmona 2 , M. Sillero-Quintana 2 1 Universidade Federal de Viçosa - Dep. Physical Education - LAPEH- Minas Gerais, Brazil 2 Universidad Politécnica de Madrid - INEF, Spain INTRODUCTION: There is no doubt that core or central temperature has a direct relationship with the exercise intensity. Some studies focused on measuring the central thermal re- sponse. However it is also interesting to investigate the thermal response of skin temperature after exercising. Between many reasons, it could provide important information about the re- covery status -making possible to assess when the athletes are completely recovered as well as determining the influence of exercise on skin temperature. OBJECTIVE: The purpose of our study is to determine by Infrared Thermography (IRT) the evolution of skin temperature for muscles and joints areas after strength training, besides to evaluate the thermal asymmetries. METHODS: A total of fourteen physical active males (age: 21.44±2.64 years; height: 1.78±0.05 m; weight: 73.23±7.63 Kg), exercising at least 3 times per week, took part of the study. They did not report any diseases, consumption of medicaments, drugs, alcohol or tobacco the hours prior to the test. Subjects were asked to avoid a list of skin influence factors concerning daily activity and habits. The study was conducted in three stages: the first one cor- responded to a familiarisation period where the objectives, re- quirements and right technique of the exercises were described to the subjects, as well as the collection of anthropometrical data from the sample. The second one consisted of the performance of a 1RM (1-repetition maximum) of each exercise. Finally, the third stage consisted of hypertrophy training. The training program started with a 5-minutes warm-up in cycle. The same order for exercises were followed for all participants, starting with bench press, leg press (main exercises), and followed by flat bench cable fly and leg extension (more analytic). Before each exercise, subjects did from 6 to 10 repetitions with light load to check the right technique and rhythm of execution. All the participants performed 4 x 10 rep (70% of 1RM) of the four exercises with 90" between sets and 3' of resting among exercises. Participants were instructed to perform the movement at a rate of 2:2 (2 seconds eccentric - 2 second concentric phase). All subjects were followed during the whole training season, pro- viding them with real-time feedback about velocity and move- ment angle on each exercise. Immediately after the last repetition of leg extension, all subjects were to the acclimated room to do the thermography images. Ten series of four thermograms (Anterior and Posterior of the Upper and Lower body) were registered before the exercise (B), immediately after (A) and once each hour during the eight following hours after the workout ("A+1" to "A+8"). Maximal, minimal, average and standard deviations of the temperatures from 24 anatomical Regions of Interest (ROI) were obtained from the thermograms using Termotracker software (Pema- group, Spain). The thermographic analysis of the data followed the patterns set by Gomez Carmona et al. (2010) patented pending protocol. After the training trial, subjects remained in the room during the 8 following hours with a constant tem- perature between 18.5ºC and 21.0ºC. The statistics treatment consisted on a descriptive analysis, as well as an ANOVA and Tukey test to check the "time" factor with a significance value of p< 0.05. RESULTS: In table 1 averaged temperatures and standard de- viation are presented, taken from the analysis of joint areas from the baseline moment before the training, immediately and 8 hours after the trial, likewise the ANOVA result considering the ten time thermal data recorded. In table 2 the same results are presented for the muscles regions. Table 1 Averaged temperature and standard deviation in joints ROI before, immediately and 8 hours after strength training. RCI RIGHT LEFT Rest After Exercise 8h Recovery P Rest After Exercise 8h Recovery P SH-F 31,98 ± 0,65 31,57 ± 0,83 32,38 ± 0,46 0,000 32,03 ± 0,66 31,66 ± 0,86 32,36 ± 0,59 0,010 SH-B 30,94 ±0,83 29,96 ± 1,23 31,32 ± 0,64 0,000 30,91 ± 0,86 29,91 ± 1,28 31,29 ± 0,75 0,000 Knee-F 28,31 ± 1,13 27,61 ± 1,23 28,32 ± 1,01 0,303 28,31 ± 1,24 27,43 ± 1,01 28,34 ± 1,20 0,132 Knee-B 31,00 ± 0,68 29,01 ± 0,91 30,99 ± 0,67 0,000 3,15 ± 0,79 29,33 ± 0,81 31,10 ± 0,71 0,000 Elbow-F 31,82 ± 0,71 31,86 ± 0,52 32,10 ± 0,63 0,850 31,77 ± 0,67 31,75 ± 0,56 32,00 ± 0,64 0,691 Elbow-B 28,95 ± 0,80 29,61 ± 0,69 29,42 ± 0,77 0,300 28,92 ± 1,00 29,67 ± 0,66 29,20 ± 0,97 0,341 SH = Shoulders; F = Front body ; B = Backs body Table 2 Averaged temperature and standard deviation in muscles ROI before, immediately and 8 hours after strength training. RCI RIGHT LEFT Rest After Exercise 8h Recovery P Rest After Exercise 8h Recovery P Pectoralis 31,78 ± 0,54 31,04 ± 1,12 32,39 ± 0,58 0,000 31,75 ± 0,58 31,08 ± 1,09 32,36 ± 0,58 0,000 Lat-Dorsi 31,12 ± 0,66 29,35 ± 1,15 31,74 ± 0,71 0,000 31,19 ± 0,66 29,44 ± 1,20 31,79 ± 0,69 0,000 Arm F 31,52 ± 0,66 31,47 ±0,70 31,84 ± 0,64 0,707 31,46 ± 0,70 31,48 ± 0,65 31,73 ± 0,71 0,847 Arm B 29,32 ± 0,97 29,09 ± 0,76 29,99 ± 0,77 0,026 29,27 ± 0,99 29,16 ± 0,76 29,92 ± 0,86 0,126 Leg F 29,68 ± 0,77 29,67 ± 1,01 30,06 ± 0,67 0,068 29,56 ± 0,76 29,63 ± 0,96 29,96 ± 0,66 0,120 Leg P 30,23 ± 0,93 28,65 ± 1,06 30,90 ± 0,71 0,000 30,25 ± 1,04 28,68 ± 1,09 30,90 ±0,71 0,000 Lat-Dorsi= Latissimus Dorsi; F = Front body ; B = Backs body