caa a22 4500 388063211 CHVBK 20180307125127.0 cr unu---uuuuu 161130e199807 xx s 000 0 eng 10.1017/S0007114598001779 doi S0007114598001779 pii (NATIONALLICENCE)cambridge-10.1017/S0007114598001779 The effect of 13 weeks of running training followed by 9 d of detraining on postprandial lipaemia [Elektronische Daten] The present study examined the influence of training, followed by a short period of detraining, on postprandial lipaemia. Fourteen normolipidaemic, recreationally active young adults aged 18-31 years participated, in two self-selected groups: three men and five women (BMI 21·7-27·6 kg/m2) completed 13 weeks of running training, after which they refrained from exercise for 9 d; three men and three women (BMI 21·5-25·6 kg/m2) maintained their usual lifestyle. Oral fat tolerance tests were conducted at baseline and again 15 h, 60 h and 9 d after the runners' last training session. Blood samples were drawn after an overnight fast and at intervals for 6 h after consumption of a high-fat meal (1·2 g fat, 1·4 g carbohydrate, 70·6 kJ energy/kg body mass). Heparin was then administered (100 IU/kg) and a further blood sample was drawn for measurement of plasma lipoprotein lipase (EC 3.1.1.34; LPL) activity. Endurance fitness improved in runners, relative to controls (maximal O2 uptake +3·2 (SE 1·1) ml/kg per min v. − 1·3 (SE 1·2) ml/kg per min; P < 0·05). In the absence of the acute effect of exercise, i.e. 60 h after the last training session, there was no effect of training on either postprandial lipaemia or on post-heparin LPL activity. However, changes during 9 d of detraining in both these variables differed significantly between groups; after 2 d without exercise (60 h test), the runners' lipaemic response was 37% higher than it was the morning after their last training session (15 h test; runners v. controls P < 0·05), with a reciprocal decrease in post-heparin LPL activity (P < 0·01). These findings suggest that improved fitness does not necessarily confer an effect on postprandial lipaemia above that attributable to a single session of exercise. Copyright © The Nutrition Society 1998 Exercise nationallicence Postprandial metabolism nationallicence Triacylglycerols nationallicence Herd Sara L. Department of Physical Education, Sports Science and Recreation Management, Loughborough University, Loughborough, Leicestershire, UK Hardman Adrianne E. Department of Physical Education, Sports Science and Recreation Management, Loughborough University, Loughborough, Leicestershire, UK Boobis Leslie H. Department of Surgery, Sunderland District General Hospital, Sunderland, Tyne and Wear, UK Cairns Caroline J. Department of Physical Education, Sports Science and Recreation Management, Loughborough University, Loughborough, Leicestershire, UK British Journal of Nutrition Cambridge University Press 80/1(1998-07), 57-66 0007-1145 80:1<57 1998 80 BJN https://doi.org/10.1017/S0007114598001779 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0007114598001779 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Herd Sara L. Department of Physical Education, Sports Science and Recreation Management, Loughborough University, Loughborough, Leicestershire, UK NATIONALLICENCE 700 1- Hardman Adrianne E. Department of Physical Education, Sports Science and Recreation Management, Loughborough University, Loughborough, Leicestershire, UK NATIONALLICENCE 700 1- Boobis Leslie H. Department of Surgery, Sunderland District General Hospital, Sunderland, Tyne and Wear, UK NATIONALLICENCE 700 1- Cairns Caroline J. Department of Physical Education, Sports Science and Recreation Management, Loughborough University, Loughborough, Leicestershire, UK NATIONALLICENCE 773 0- British Journal of Nutrition Cambridge University Press 80/1(1998-07), 57-66 0007-1145 80:1<57 1998 80 BJN CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge