Table 2.

Effect of high-fat diet, alone or in conjunction with training in either the fasted or the carbohydrate-fed state, on muscle glycogen content and mitochondrial enzyme activities

		CON	F	CHO
Glycogen (mmol (kg dry weight)−1)	Pretest	471 ± 24	483 ± 40	502 ± 46
	Posttest	448 ± 37	578 ± 26*†	562 ± 34†
CS (μmol min−1 g−1)	Pretest	117 ± 5	137 ± 10	130 ± 16
	Posttest	108 ± 9	157 ± 7*†	153 ± 16*†
β-HAD (μmol min−1 g−1)	Pretest	43 ± 4	45 ± 4	46 ± 7
	Posttest	43 ± 4	51 ± 3	50 ± 7
COX (μmol min−1 g−1)	Pretest	74 ± 6	71 ± 3	89 ± 6 §
	Posttest	80 ± 4	78 ± 3	90 ± 6

Data provided are means ±s.e.m. (CON: n = 7; F: n = 10; CHO: n = 10) and represent total glycogen content, and mitochondrial activities of citrate synthase (CS), β-hydroxyacyl coenzyme A dehydrogenase (β-HAD) and cytochrome c oxidase (COX) in m. vastus lateralis. Values before (pretest) and after (posttest) a 6-week hyper-caloric fat-rich diet, in either the absence (CON) or the presence of training in either the fasted state (F) or the carbohydrate-fed state (CHO) are shown.

^*P < 0.05, versus pretest;

^†P < 0.05, versus CON posttest;

^§P < 0.05, versus F and CON pretest.