Changes in muscle enzymatic activity and capillarisation in untrained men as a result of a period of recreational F training compared to R or inactive C
| Study | Activity, target group, gender | Age (years) | Training intervention; Duration (weeks), intensity (%), frequency (per week), session duration (min) | Capillarisation, cap per fibre (%) | CS activity (%) | HAD activity (%) |
|---|---|---|---|---|---|---|
| Krustrup et al2 10 53 | F, UT, M | 29 | 12; 82%HRmax; 2.3; 60 | 22%↑† | 14%↑† | 5%↑NS |
| R, UT, M | 31 | 12; 82%HRmax; 2.5; 60 | 16%↑ | 7%↑NS | 5%↑NS | |
| C, UT, M | 31 | No intervention | 5%↑NS | 11%↓NS | 11%↓NS | |
| Randers et al8 41 | F; UT; M | 31 | 64; 82%HRmax; 1.3; 60 | – | 18%↑ | 16%↑NS |
| C; UT; M | 32 | No intervention | – | – | – | |
| Andersen et al5 | F, UT, Mt | 51 | 24; 83%HRmax; 1.5; 60 | 7%↑ | 7%↓NS | 5%↓NS |
| C, UT, Mt | 49 | No intervention | 5%↓NS | 9%↑NS | 1%↑NS |
Changes between pre and post training intervention (unless otherwise stated).
†Significant group difference compared to control.
CS, citrate synthase; C, controls; HAD, 3-hydroxyacyl-CoA dehydrogenase; HRmax, maximal heart rate; F, football; M, men; NS, not significant; R, running; t, type 2 diabetics; UT, untrained.