|Metabolic response to shallow water exercise||
METABOLIC AND CARDIOVASCULAR RESPONSE TO SHALLOW
WATER EXERCISE IN 60 TO 80 YEAR OLD FEMALES.
D’Acquisto, L.J., D’Acquisto, D.M., Renne, D., Bates, K.,Pallotta,G.,
Nethery, V. Exer. Sci. Laboratory, Depart. of Physical and Health Education,
and Leisure Services.Ellensburg, WA. 98926
The purpose of this investigation was to examine the metabolic
and cardiovascular demands of shallow water exercise in older females.
Eighteen active older females, not taking cardiac medication, participated
in this investigation (mean+SE; age, 66.4+1.2yr.; Ht.,167.1+1.4cm; Wt.,75.6+3.2kg;
%Fat,33.2+1.7). Testing included: (1) resting metabolic measurements, (2)
performing 5, 8- min. evenly paced self selected submax. water exer. bouts:expired
air was collected during the final three min., while HR was recorded
(Polar HR monitor), and (3) a 40 min. water exer. class in which
HR was monitored. Results: (1) one MET equaled
ml.min-1.kg-1, resting HR-63.4+2.2 bpm; (2) average submax. MET, HR and RPE (Borg Scale) responses for exer. bouts one to five ranged from 2.8+0.1 to 5.8+0.3, 89.7+3.0 to 119.5+3.3 bpm, and 8.0+0.3 to 12.5+0.4, respectively; (3) a linear relationship between MET-HR was found for each participant, all r values >0.96(p<0.05); (4) estimated MET & measured HR responses for the 40 min. water exercise class: warmup, 4.0+0.3 & 99.5+3.4; body of workout, 5.4+0.4 & 112.3+3.6; cooldown, 3.6+0.3 & 95.5+3.0; (6) the exer. intensity ranged from ~ 66 to 80% of pred.HR max. In conclusion, shallow water exercise elicits metabolic and cardiovascular responses which meet the ACSM exercise prescription guidelines for enhancing physical fitness. The following RPE and MET values for light (L), moderate (M), and heavy (H) water exercise is proposed for older females: L:7-10 & 2.0-3.8; M:11-13 & 3.8-5.8; H: >13 & > 5.8.