Table 5.
BRS during exercise with and without respiratory frequency.
| Rest | 70W | 100W | 130W | 160W | Max | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SL | ALT1 | ALT16 | SL | ALT1 | ALT16 | SL | ALT1 | ALT16 | SL | ALT1 | ALT16 | SL | ALT1 | ALT16 | SL | ALT1 | ALT16 | |
| BRS – resp (ms/mmHg) | 11.1± 6.3 | 7.1± 4.1 | 5.3± 2.1 | 3.3± 1.7 | 1.5± 0.7 | 2.4± 1.4 | 2.6± 1.4 | 1.6± 1.0 | 1.7± 0.7 | 1.7± 1.2 | 2.0± 2.1 | 1.7± 1.8 | 2.1± 2.8 | 1.3± 0.5 | 1.3± 0.3 | 4.5± 9.6 | 5.9± 6.7 | 0.8± 0.2 |
| BRS – no resp (ms/mmHg) | 6.1± 3.1* | 3.2± 2.5*a | 3.1± 0.3a | 2.2± 1.0*§ | 1.4± 0.3*§a | 1.7± 0.4§ | 2.1± 0.7§ | 1.7± 0.3§ | 1.8± 0.5§ | 1.6± 0.6§ | 2.0± 1.2§ | 1.4± 0.2§ | 3.5± 3.1 | 2.1± 0.7 | 1.3± 0.3§ | 3.8± 2.8§ | 4.6± 3.1 | 1.2± 1.4§ |
| CV | 0.57 | 0.58 | 0.41 | 0.50 | 0.43 | 0.59 | 0.53 | 0.67 | 0.44 | 0.69 | 1.09 | 1.04 | 1.33 | 0.42 | 0.26 | 2.15 | 1.14 | 0.19 |
| CIinf | 7.8 | 4.9 | 4.1 | 2.4 | 1.2 | 1.7 | 1.9 | 1.0 | 1.3 | 1.1 | 0.8 | 0.8 | 0.6 | 1.0 | 1.1 | −0.7 | 2.3 | 0.8 |
| CIsup | 14.5 | 9.3 | 6.4 | 4.2 | 1.9 | 3.2 | 3.4 | 2.1 | 2.1 | 2.4 | 3.1 | 2.7 | 3.6 | 1.5 | 1.5 | 9.6 | 9.4 | 0.9 |
CV and CI refer to BRS with respiration. BRS – resp, baroreflex sensitivity assessed using the sequence method (ms/mmHg); BRS – no resp, baroreflex sensitivity assessed using the sequence method with respiration frequency removed (ms/mmHg);
*
significant compared to BRS - resp (p < 0.05).
§
different from rest (p < 0.05).
a
Different from SL (p < 0.05). Coefficient of variation (CV), superior (CIsup), and inferior (CIinf) confidence interval boundaries of BRS (ms/mmHg) with respiration. The CI values have been computed using the classical 95% confidence interval.