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The expansion of the pulmonary rib cage during breath stacking is influenced by age in obese women.

Barcelar Jde M, Aliverti A, Rattes C, Ximenes ME, Campos SL, Brandão DC, Fregonezi G, de Andrade AD - PLoS ONE (2014)

Bottom Line: Age was significantly lower in group 1 than group 2.During breath stacking, inspiratory capacity was significant differences in obese subjects with a smaller expansion of the pulmonary rib cage and a greater expansion of the abdomen compared to controls and also between groups 1 and 2.A significant inverse linear relationship was found between age and inspiratory capacity of the pulmonary rib cage but not of the abdomen.

View Article: PubMed Central - PubMed

Affiliation: Departamento de Fisioterapia, Universidade Federal de Pernambuco, Pernambuco, Brazil.

ABSTRACT

Objective: To analyze in obese women the acute effects of the breath stacking technique on thoraco-abdominal expansion.

Design and methods: Nineteen obese women (BMI ≥ 30 kg/m(2)) were evaluated by anthropometry, spirometry and maximal respiratory muscle pressures and successively analyzed by Opto-Electronic Plethysmography and a Wright respirometer during quiet breathing and breath stacking maneuvers and compared with a group of 15 normal-weighted healthy women. The acute effects of the maneuvers were assessed in terms of total and compartmental chest wall volumes at baseline, end of the breath stacking maneuver and after the maneuver. Obese subjects were successively classified into two groups, accordingly to the response during the maneuver, group 1 = prevalent rib cage or group 2 = abdominal expansion.

Results: Age was significantly lower in group 1 than group 2. When considering the two obese groups, FEV1 was lower and minute ventilation was higher only in group 2 compared to controls group. During breath stacking, inspiratory capacity was significant differences in obese subjects with a smaller expansion of the pulmonary rib cage and a greater expansion of the abdomen compared to controls and also between groups 1 and 2. A significant inverse linear relationship was found between age and inspiratory capacity of the pulmonary rib cage but not of the abdomen.

Conclusions: In obese women the maximal expansion of the rib cage and abdomen is influenced by age and breath stacking maneuver could be a possible therapy for preventing respiratory complications.

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Related in: MedlinePlus

Average variations of total chest wall (Vcw), pulmonary rib cage (Vrc,p), abdominal rib cage (Vrc,a) and abdominal (Vab) volume in control group (left panel, n = 15), group 1 (middle panels, n = 9) and group 2 (right panels, n = 10) at end of breath stacking, i.e. TLC (end-BS), first expiration after breath stacking (post-1) and 30 seconds after breath stacking (post-2) compared to baseline period (BL), (from top to bottom) (see text for details).Data are expressed as mean (SD).
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pone-0110959-g003: Average variations of total chest wall (Vcw), pulmonary rib cage (Vrc,p), abdominal rib cage (Vrc,a) and abdominal (Vab) volume in control group (left panel, n = 15), group 1 (middle panels, n = 9) and group 2 (right panels, n = 10) at end of breath stacking, i.e. TLC (end-BS), first expiration after breath stacking (post-1) and 30 seconds after breath stacking (post-2) compared to baseline period (BL), (from top to bottom) (see text for details).Data are expressed as mean (SD).

Mentions: The acute effects of the breath stacking maneuver on VCW, VRC,P, VRC,A and VAB are shown in Fig. 1 (in form of two representative examples, one of a subject belonging to group 1 and another to group 2) and in Fig. 3 (in terms of average values of total and compartmental volumes at P1, P2, P3 and P4). As described above, the total inspired volume at the end of the breath stacking maneuver was similar between the two groups, with the pulmonary rib cage being the prevalent compartment in group 1 and the abdomen in group 2. After the maneuver, the end-expiratory volume of the total chest wall returned to the baseline value in both groups. In group 1, however, the end-expiratory volume of the pulmonary rib cage tended to remain higher than baseline until P4 (with the abdominal rib cage and the abdomen returning to baseline levels or even to lower values). Conversely, in group 2 the end-expiratory volume of the abdomen remained higher than baseline until P4 (with the two rib cage compartments returning to baseline levels or even to lower values) (Fig. 3).


The expansion of the pulmonary rib cage during breath stacking is influenced by age in obese women.

Barcelar Jde M, Aliverti A, Rattes C, Ximenes ME, Campos SL, Brandão DC, Fregonezi G, de Andrade AD - PLoS ONE (2014)

Average variations of total chest wall (Vcw), pulmonary rib cage (Vrc,p), abdominal rib cage (Vrc,a) and abdominal (Vab) volume in control group (left panel, n = 15), group 1 (middle panels, n = 9) and group 2 (right panels, n = 10) at end of breath stacking, i.e. TLC (end-BS), first expiration after breath stacking (post-1) and 30 seconds after breath stacking (post-2) compared to baseline period (BL), (from top to bottom) (see text for details).Data are expressed as mean (SD).
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4220958&req=5

pone-0110959-g003: Average variations of total chest wall (Vcw), pulmonary rib cage (Vrc,p), abdominal rib cage (Vrc,a) and abdominal (Vab) volume in control group (left panel, n = 15), group 1 (middle panels, n = 9) and group 2 (right panels, n = 10) at end of breath stacking, i.e. TLC (end-BS), first expiration after breath stacking (post-1) and 30 seconds after breath stacking (post-2) compared to baseline period (BL), (from top to bottom) (see text for details).Data are expressed as mean (SD).
Mentions: The acute effects of the breath stacking maneuver on VCW, VRC,P, VRC,A and VAB are shown in Fig. 1 (in form of two representative examples, one of a subject belonging to group 1 and another to group 2) and in Fig. 3 (in terms of average values of total and compartmental volumes at P1, P2, P3 and P4). As described above, the total inspired volume at the end of the breath stacking maneuver was similar between the two groups, with the pulmonary rib cage being the prevalent compartment in group 1 and the abdomen in group 2. After the maneuver, the end-expiratory volume of the total chest wall returned to the baseline value in both groups. In group 1, however, the end-expiratory volume of the pulmonary rib cage tended to remain higher than baseline until P4 (with the abdominal rib cage and the abdomen returning to baseline levels or even to lower values). Conversely, in group 2 the end-expiratory volume of the abdomen remained higher than baseline until P4 (with the two rib cage compartments returning to baseline levels or even to lower values) (Fig. 3).

Bottom Line: Age was significantly lower in group 1 than group 2.During breath stacking, inspiratory capacity was significant differences in obese subjects with a smaller expansion of the pulmonary rib cage and a greater expansion of the abdomen compared to controls and also between groups 1 and 2.A significant inverse linear relationship was found between age and inspiratory capacity of the pulmonary rib cage but not of the abdomen.

View Article: PubMed Central - PubMed

Affiliation: Departamento de Fisioterapia, Universidade Federal de Pernambuco, Pernambuco, Brazil.

ABSTRACT

Objective: To analyze in obese women the acute effects of the breath stacking technique on thoraco-abdominal expansion.

Design and methods: Nineteen obese women (BMI ≥ 30 kg/m(2)) were evaluated by anthropometry, spirometry and maximal respiratory muscle pressures and successively analyzed by Opto-Electronic Plethysmography and a Wright respirometer during quiet breathing and breath stacking maneuvers and compared with a group of 15 normal-weighted healthy women. The acute effects of the maneuvers were assessed in terms of total and compartmental chest wall volumes at baseline, end of the breath stacking maneuver and after the maneuver. Obese subjects were successively classified into two groups, accordingly to the response during the maneuver, group 1 = prevalent rib cage or group 2 = abdominal expansion.

Results: Age was significantly lower in group 1 than group 2. When considering the two obese groups, FEV1 was lower and minute ventilation was higher only in group 2 compared to controls group. During breath stacking, inspiratory capacity was significant differences in obese subjects with a smaller expansion of the pulmonary rib cage and a greater expansion of the abdomen compared to controls and also between groups 1 and 2. A significant inverse linear relationship was found between age and inspiratory capacity of the pulmonary rib cage but not of the abdomen.

Conclusions: In obese women the maximal expansion of the rib cage and abdomen is influenced by age and breath stacking maneuver could be a possible therapy for preventing respiratory complications.

Show MeSH
Related in: MedlinePlus