TY  - JOUR
AU  - Cleary, Michelle A.
A2  - Cleary, Michelle A.
A2  - Sitler, Michael R.
A2  - Kendrick, Zebulon V.
DB  - BISp
DP  - BISp
KW  - Anthropometrie
KW  - Dehydratation
KW  - Extremität, untere
KW  - Flüssigkeitshaushalt
KW  - Goniometrie
KW  - Hitzebelastung
KW  - Laufbandbelastung
KW  - M. quadriceps femoris
KW  - Mann
KW  - Muskelkater
KW  - Muskelkontraktion, exzentrische
KW  - Muskelphysiologie
KW  - Symptomatik
KW  - Thermoregulation
KW  - Untersuchung, empirische
LA  - eng
TI  - Dehydration and symptoms of delayed-onset muscle soreness in normothermic men
TT  - Dehydratation und Symptome des Muskelkaters bei normothermen Männern
PY  - 2006
N2  - Context: A dehydrated individual who performs eccentric exercise may exacerbate skeletal muscle damage, leading to structural, contractile, and enzymatic protein denaturation, in addition to the myofiber and connective damage resulting from the eccentric muscle tension. Objective: To identify the effects of dehydration on 5 physiologic characteristics of delayed-onset muscle soreness (DOMS) in normothermic men after an eccentric exercise perturbation. Design: Randomized group test-retest design. Setting: Laboratory. Patients or Other Participants: Ten healthy male volunteers randomly assigned to either a euhydration (age = 26.2 ± 4.9 years, height = 174.1 ± 6.0 cm, mass = 86.5 ± 15.3 kg) or dehydration (age = 25.8 ± 2.2 years, height = 177.2 ± 3.1 cm, mass = 84.4 ± 3.8 kg) group. Intervention(s): Subjects performed treadmill walking for 45 minutes in either a thermoneutral (euhydration) or a hot, humid (dehydration) environment. After a rest period to allow for return to the normothermic condition, DOMS was induced with a 45-minute downhill run. Main Outcome Measures: We assessed 5 physiologic characteristics of DOMS before and at intervals after the eccentric exercise. The characteristics were perceived pain of the bilateral quadriceps and overall body, bilateral punctate tenderness of the superficial quadriceps muscles, bilateral knee-flexion passive range of motion, bilateral thigh circumference, and bilateral isometric quadriceps muscle strength. Thermoregulatory and cardiovascular measures were obtained to monitor participants' heat load during exercise. Results: The experimental protocol produced a 0.9% increase in body mass of the euhydration group and a significant 2.7% decrease in body mass of the dehydration group. The downhill-running exercise perturbation induced DOMS in both the euhydrated and dehydrated participants, based on increased bilateral quadriceps and overall body perceived pain and punctate tenderness of the bilateral vastus medialis muscle. The signs and symptoms of DOMS after an eccentric exercise perturbation were not exacerbated by moderate dehydration of 2.7% body mass after rest and return to the normothermic condition. Conclusions: Significantly dehydrated participants who rested and returned to a normothermic condition did not experience increased characteristics of DOMS. Verf.-Referat
L2  - http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1421497/
L2  - http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1421497/pdf/i1062-6050-41-1-36.pdf
SP  - S. 36-45
SN  - 1062-6050
JO  - Journal of athletic training
IS  - 1
VL  - 41
M3  - Elektronische Ressource (online)
M3  - Gedruckte Ressource
ID  - PU201011008249
ER  -