Table 4.
Results on measured variables during the 6 repeated supramaximal cycling exercises at the first (pre-intervention) and the last (post-intervention) HIIT session for both young and older groups.
| Pre-intervention | Post-intervention | Interaction effect | ||||
|---|---|---|---|---|---|---|
| Young | Older | Young | Older | F | p | |
| 1st repetition | ||||||
| P1 (W.kg-1) | 6.2 (0.3) | 6.2 (0.5) | 8.5 (1)b | 7.5 (0.5) ab | 14.01 | < 0.01 |
| HR (beats.min-1) | 104 (3) | 102 (2) | 104 (3) | 102 (2) | 4.1 | 0.23 |
| %HRmax | 54 | 55 | 54 | 54 | 2.1 | 0.23 |
| RPE | 11 (0.2) | 11 (0.6) | 11 (0.2) | 11 (0.6) | 1.7 | 0.54 |
| 2nd repetition | ||||||
| P (W.kg-1) | 6.4 (0.1) | 6.3 (0.1) | 8.3 (1)b | 7.1 (0.3)ab | 14.18 | < 0.01 |
| HR (beats.min-1) | 103 (3) | 101 (1) | 105 (3) | 103 (2) | 1.2 | 0.13 |
| %HRmax | 54 | 55 | 54 | 54 | 1.7 | 0.23 |
| RPE | 11 (0.1) | 11 (0.6) | 11 (0.2) | 11 (0.3) | 1.9 | 0.35 |
| 3rd repetition | ||||||
| P (W.kg-1) | 6.1 (0.9) | 6.3 (0.6) | 8.2 (0.9)b | 7.8 (0.2)ab | 13.1 | < 0.01 |
| HR (beats.min-1) | 103 (3) | 101 (1) | 105 (1) | 104 (1) | 3.1 | 0.33 |
| %HRmax | 53.5 | 54 | 54 | 55 | 2.1 | 0.21 |
| RPE | 11 (0.2) | 12 (0.7) | 12 (1.2) | 11 (0.6) | 1.1 | 0.54 |
| 4th repetition | ||||||
| P (W.kg-1) | 6.4 (0.3) | 6.5 (0.5) | 8.5 (1)b | 7.7 (0.2)ab | 11.7 | < 0.01 |
| HR (beats.min-1) | 106 (3) | 104 (2) | 104 (3) | 104 (1) | 1.8 | 0.16 |
| %HRmax | 56 | 56 | 54 | 55 | 1.7 | 0.23 |
| RPE | 11 (0.4) | 11 (0.6) | 11 (0.2) | 12 (0.2) | 1.2 | 0.15 |
| 5th repetition | ||||||
| P (W.kg-1) | 6.5 (0.2) | 6.4 (0.2) | 8.6 (1)b | 7.7 (0.5)ab | 15.4 | < 0.01 |
| HR (beats.min-1) | 105 (3) | 103 (2) | 103 (3) | 103 (2) | 1.9 | 0.18 |
| %HRmax | 54 | 55 | 54 | 54 | 1.6 | 0.22 |
| RPE | 11 (0.4) | 11 (0.6) | 11 (0.4) | 11 (0.6) | 1.1 | 0.12 |
| 6th repetition | ||||||
| P (W.kg-1) | 6.6 (0.1) | 6.2 (0.5) | 8.5 (1)b | 7.5 (0.5)ab | 21.41 | <0.01 |
| HR (beats.min-1) | 104 (3) | 102 (2) | 104 (3) | 102 (2) | 1.9 | 0.18 |
| %HRmax | 54 | 55 | 54 | 54 | 1.6 | 0.22 |
| RPE | 11 (0.2) | 11 (0.6) | 11 (0.3) | 11 (0.3) | 1.1 | 0.12 |
Values are mean ± SE (standard error). P, power developed at each repetition; 1, 2, 3, 4, 5, 6, number of repetition; HR, heart rate; %HRmax, percentage of maximal heart rate; RPE, rating of perceived exertion. aSignificant difference between groups (p < 0.01). bSignificant difference from pre-intervention values within an age group (p < 0.01).