BACKGROUND: Although most individuals experience successful weight loss following Roux-en-Y gastric bypass (RYGB), weight regain is a concern, the composition of which is not well documented. Our aim was to evaluate changes in body composition and handgrip strength as a measure of functional status in participants from a previous 1-year post-RYGB longitudinal study who had undergone RYGB approximately 9 years prior. METHODS: Five women from an original larger cohort were monitored pre-RYGB and 1.5 months, 6 months, 1 year, and 9 years post-RYGB. Body composition was assessed at all time points using dual energy x-ray absorptiometry and multiple dilution. Handgrip strength was measured using a digital isokinetic hand dynamometer (Takei Scientific Instruments, Ltd, Tokyo, Japan). RESULTS: Mean time to final follow-up was 8.7 years. Lean soft tissue (LST) loss over the ~9-year period was on average 11.9 ± 5.6 kg. Compared with 1-year post-RYGB, 9-year LST was 4.4 ± 3.0 kg lower ( P = .03). Fat-free mass decreased over the 9-year period by 12.6 ± 5.8 kg. Mean fat mass (FM) decreased from 75.4 ± 22.6 kg pre-RYGB to 35.5 ± 21.5 kg 1 year post-RYGB but then trended toward an increase of 8.6 ± 7.0 kg between 1 year and 9 years post-RYGB ( P = .053). Loss of LST was correlated with loss of handgrip strength ( r = 0.64, P = .0005). CONCLUSION: The continued loss of lean mass associated with decreased handgrip strength occurring with long-term trend toward FM regain post-RYGB is concerning. The loss of LST and functional strength carries particular implications for the aging bariatric population and should be investigated further.
BACKGROUND: Although most individuals experience successful weight loss following Roux-en-Y gastric bypass (RYGB), weight regain is a concern, the composition of which is not well documented. Our aim was to evaluate changes in body composition and handgrip strength as a measure of functional status in participants from a previous 1-year post-RYGB longitudinal study who had undergone RYGB approximately 9 years prior. METHODS: Five women from an original larger cohort were monitored pre-RYGB and 1.5 months, 6 months, 1 year, and 9 years post-RYGB. Body composition was assessed at all time points using dual energy x-ray absorptiometry and multiple dilution. Handgrip strength was measured using a digital isokinetic hand dynamometer (Takei Scientific Instruments, Ltd, Tokyo, Japan). RESULTS: Mean time to final follow-up was 8.7 years. Lean soft tissue (LST) loss over the ~9-year period was on average 11.9 ± 5.6 kg. Compared with 1-year post-RYGB, 9-year LST was 4.4 ± 3.0 kg lower ( P = .03). Fat-free mass decreased over the 9-year period by 12.6 ± 5.8 kg. Mean fat mass (FM) decreased from 75.4 ± 22.6 kg pre-RYGB to 35.5 ± 21.5 kg 1 year post-RYGB but then trended toward an increase of 8.6 ± 7.0 kg between 1 year and 9 years post-RYGB ( P = .053). Loss of LST was correlated with loss of handgrip strength ( r = 0.64, P = .0005). CONCLUSION: The continued loss of lean mass associated with decreased handgrip strength occurring with long-term trend toward FM regain post-RYGB is concerning. The loss of LST and functional strength carries particular implications for the aging bariatric population and should be investigated further.
Authors: Sai Krupa Das; Susan B Roberts; Joseph J Kehayias; Jack Wang; L K George Hsu; Scott A Shikora; Edward Saltzman; Megan A McCrory Journal: Am J Physiol Endocrinol Metab Date: 2003-02-25 Impact factor: 4.310
Authors: Torsten Olbers; Sofia Björkman; Ak Lindroos; Almantas Maleckas; Lars Lönn; Lars Sjöström; Hans Lönroth Journal: Ann Surg Date: 2006-11 Impact factor: 12.969
Authors: Lauren M Beckman; Tiffany R Beckman; Shalamar D Sibley; William Thomas; Sayeed Ikramuddin; Todd A Kellogg; Mohammad A Ghatei; Stephen R Bloom; Carel W le Roux; Carrie P Earthman Journal: JPEN J Parenter Enteral Nutr Date: 2011-03 Impact factor: 4.016
Authors: Ajay Kumar Jain; Carel W le Roux; Puneet Puri; Ali Tavakkoli; Nana Gletsu-Miller; Blandine Laferrère; Richard Kellermayer; John K DiBaise; Robert G Martindale; Bruce M Wolfe Journal: JPEN J Parenter Enteral Nutr Date: 2018-02 Impact factor: 4.016
Authors: Amanda R Vest; William W Wong; Joronia Chery; Alex Coston; Laura Telfer; Matthew Lawrence; Didjana Celkupa; Michael S Kiernan; Gregory Couper; Masashi Kawabori; Edward Saltzman Journal: Circ Heart Fail Date: 2022-04-05 Impact factor: 10.447
Authors: Malou A H Nuijten; Thijs M H Eijsvogels; Valerie M Monpellier; Ignace M C Janssen; Eric J Hazebroek; Maria T E Hopman Journal: Obes Rev Date: 2021-10-19 Impact factor: 10.867
Authors: Malou A H Nuijten; Valerie M Monpellier; Thijs M H Eijsvogels; Ignace M C Janssen; Eric J Hazebroek; Maria T E Hopman Journal: Obes Surg Date: 2020-08 Impact factor: 4.129