Biology of Sport
eISSN: 2083-1862
ISSN: 0860-021X
Biology of Sport
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SCImago Journal & Country Rank
3/2016
vol. 33
 
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abstract:
Original paper

Effects of far infrared rays emitting clothing on recovery after an intense plyometric exercise bout applied to elite soccer players: a randomized double-blind placebo-controlled trial

I Loturco
1
,
CCC Abad
1
,
FY Nakamura
2
,
SP Ramos
2
,
R Kobal
1
,
S Gil
1
,
LA Pereira
1
,
FHP Burini
3
,
H Roschel
4
,
C Ugrinowitsch
4
,
V Tricoli
4

  1. NAR - Nucleus of High Performance in Sport, São Paulo, SP, Brazil
  2. State University of Londrina, Londrina, PR, Brazil
  3. Nutrition and Exercise Metabolism Center - UNESP, Botucatu, SP, Brazil
  4. School of Physical Education and Sport, University of São Paulo, São Paulo, SP, Brazil
Biol. Sport 2016;33:277-283
Online publish date: 2016/08/16
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The aim was to investigate the effects of far infrared (FIR) ray emitting clothes on indirect markers of exercise-induced muscle damage and physical performance recovery after a plyometric bout applied to soccer players. Twenty-one male players (18.9±0.6 years; 70.8±5.01 kg; 178.3±0.06 cm) performed 100 drop-jumps. Six hours after the bout, athletes put on FIR clothes (FIR) (density of 225 g • m-2, 88% far infrared rays emitting polyamide 66 Emana yarn (PA66) fibre, 12% Spandex, emissivity of 0.88 and power emitted of 341 W/m2μm at 37°C in the 5-20 μm wavelength range, patent WO 2009/077834 A2) (N=10) or placebo clothes (PLA) (N=11). Mid-thigh circumferences, creatine kinase (CK), and delayed-onset muscle soreness (DOMS) were assessed before, immediately after and 24, 48, and 72 h after the bout. Squat (SJ) and countermovement jump (CMJ) heights were measured before and at 24, 48, and 72 h after, while 1RM leg press (maximum strength) was measured before and at 72 h after the plyometrics. No differences between groups were found in mid-thigh circumferences, SJ, CMJ or 1RM. CK increased significantly 24 h after the plyometrics in comparison to before (p<0.05) in both groups. PLA showed significant DOMS increases at 24, 48, and 72 h, while FIR showed significant increases at 24 and 48 h (p<0.05). DOMS effect sizes were greater in FIR (moderate at 48 h, ES=0.737 and large at 72 h, ES=0.844), suggesting that FIR clothes may reduce perceived DOMS after an intense plyometric session performed by soccer players.
keywords:

Delayed-onset muscle soreness power, Football, Sports recovery

 
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