TY  - JOUR
A1  - Scharhag-Rosenberger, Friederike
A1  - Walitzek, Susanne
A1  - Kindermann, Wilfried
A1  - Meyer, Tim
T1  - Differences in adaptations to 1 year of aerobic endurance training  individual patterns of nonresponse
JF  - Scandinavian journal of medicine & science in sports
N2  - Lacking responses to endurance training (ET) have been observed for several variables. However, detailed analyses of individuals' responses are scarce. To learn more about the variability of ET adaptations, patterns of response were analyzed for each subject in a 1-year ET study. Eighteen participants [42 +/- 5 years, body mass index: 24 +/- 3 kg/m2, maximal oxygen uptake (VO2max): 38 +/- 5 mL/min/kg] completed a 1-year jogging/walking program on 3 days/week, 45 min/session at 60% heart rate (HR) reserve. VO2max, resting HR (rHR), exercise HR (eHR) and individual anaerobic threshold (IAT) were determined by treadmill and cycling ergometry respectively. Intraindividual coefficients of variation were extracted from the literature to distinguish random changes from training responses. Eight participants showed improvements in all variables. In 10 participants, one or two variables did not improve (VO2max, rHR, eHR and IAT remained unchanged in four, four, three and one cases, respectively). At least one variable improved in each subject. Data indicate that ET adaptations might be detected in each individual using multiple variables of different adaptation levels and intensity domains. Nonresponse seems to occur frequently and might affect all variables. Further studies should investigate whether nonresponders improve with altered training. Furthermore, associations between patterns of nonresponse and health benefits from ET are worth considering.
KW  - variability
KW  - responder
KW  - nonresponder
Y1  - 2012
U6  - https://doi.org/10.1111/j.1600-0838.2010.01139.x
SN  - 0905-7188
VL  - 22
IS  - 1
SP  - 113
EP  - 118
PB  - Wiley-Blackwell
CY  - Malden
ER  -