TY - JOUR
T1 - Comparative efficacy of water and land treadmill training for overweight or obese adults
AU - Greene, Nicholas P.
AU - Lambert, Brad S.
AU - Greene, Elizabeth S.
AU - Carbuhn, Aaron F.
AU - Green, John S.
AU - Crouse, Stephen F.
PY - 2009/9
Y1 - 2009/9
N2 - PURPOSE: No known previous research has been published to explore the efficacy of underwater treadmill (UTM) exercise training for the obese. Thus, the purpose of this study was to compare changes in physical fitness, body weight, and body composition in physically inactive, overweight, and obese adults after 12 wks of land treadmill (LTM) or UTM training. METHODS: Fifty-seven physically inactive, overweight, and obese men (n = 25) and women (n = 32) participated in this investigation. The mean ± SEM age, weight, body mass index (BMI), and V̇O2max upon entry were 44 ± 2 yr, 90.5 ± 2.4 kg, 30.5 ± 0.7 kg·m, and 27.1 ± 0.7 mL O2·kg·min, respectively. Subjects were randomly assigned to exercise three times per week for 12 wk on either LTM (n = 29) or UTM (n = 28) matched for intensity and volume. Session volume was progressively increased from 250 to 500 kcal per session by week 6 and remained at 500 kcal through week 12. Before and after training, V̇O2max was assessed by the Bruce treadmill protocol with open-circuit calorimetry, and body composition was assessed by dual-energy ray absorptiometry. Data were analyzed by a 2 (training) × 2 (exercise mode) × 2 (gender) ANOVA repeated across training (α = 0.05). RESULTS: Training responses were not different between genders. After either UTM or LTM training, V̇O2max was significantly increased (+3.6 ± 0.4 mL O2·kg·min), whereas body weight (-1.2 ± 0.3 kg), BMI (-0.56 ± 0.11 kg·m), body fat percentage (-1.3% ± 1.3%), and fat mass (-1.1 ± 0.3 kg) were significantly reduced (pooled means for UTM and LTM). Regional leg lean body mass (LBM) was significantly increased with both CTM and UTM (0.4 ± 0.3 and 0.8 ± 0.2 kg, respectively). An increase in total LBM approached significance with UTM training only (+0.6 ± 0.3 kg, P = 0.0599). CONCLUSIONS: UTM and LTM training are equally capable of improving aerobic fitness and body composition in physically inactive overweight individuals, but UTM training may induce increases in LBM.
AB - PURPOSE: No known previous research has been published to explore the efficacy of underwater treadmill (UTM) exercise training for the obese. Thus, the purpose of this study was to compare changes in physical fitness, body weight, and body composition in physically inactive, overweight, and obese adults after 12 wks of land treadmill (LTM) or UTM training. METHODS: Fifty-seven physically inactive, overweight, and obese men (n = 25) and women (n = 32) participated in this investigation. The mean ± SEM age, weight, body mass index (BMI), and V̇O2max upon entry were 44 ± 2 yr, 90.5 ± 2.4 kg, 30.5 ± 0.7 kg·m, and 27.1 ± 0.7 mL O2·kg·min, respectively. Subjects were randomly assigned to exercise three times per week for 12 wk on either LTM (n = 29) or UTM (n = 28) matched for intensity and volume. Session volume was progressively increased from 250 to 500 kcal per session by week 6 and remained at 500 kcal through week 12. Before and after training, V̇O2max was assessed by the Bruce treadmill protocol with open-circuit calorimetry, and body composition was assessed by dual-energy ray absorptiometry. Data were analyzed by a 2 (training) × 2 (exercise mode) × 2 (gender) ANOVA repeated across training (α = 0.05). RESULTS: Training responses were not different between genders. After either UTM or LTM training, V̇O2max was significantly increased (+3.6 ± 0.4 mL O2·kg·min), whereas body weight (-1.2 ± 0.3 kg), BMI (-0.56 ± 0.11 kg·m), body fat percentage (-1.3% ± 1.3%), and fat mass (-1.1 ± 0.3 kg) were significantly reduced (pooled means for UTM and LTM). Regional leg lean body mass (LBM) was significantly increased with both CTM and UTM (0.4 ± 0.3 and 0.8 ± 0.2 kg, respectively). An increase in total LBM approached significance with UTM training only (+0.6 ± 0.3 kg, P = 0.0599). CONCLUSIONS: UTM and LTM training are equally capable of improving aerobic fitness and body composition in physically inactive overweight individuals, but UTM training may induce increases in LBM.
KW - Aerobic exercise
KW - Aquatic exercise
KW - Body composition
KW - V̇O
KW - Weight loss
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U2 - 10.1249/MSS.0b013e3181a23f7f
DO - 10.1249/MSS.0b013e3181a23f7f
M3 - Article
C2 - 19657288
AN - SCOPUS:69349100063
SN - 0195-9131
VL - 41
SP - 1808
EP - 1815
JO - Medicine and science in sports and exercise
JF - Medicine and science in sports and exercise
IS - 9
ER -