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Alam A, Ma C, Jiang SF, Jensen CD, Webb KH, Boparai ES, Jue TL, Munroe CA, Gupta S, Fox J, Hamerski CM, Velayos FS, Corley DA, Lee JK. Declining Colectomy Rates for Nonmalignant Colorectal Polyps in a Large, Ethnically Diverse, Community-Based Population. Clin Transl Gastroenterol 2022; 13:e00477. [PMID: 35347095 PMCID: PMC9132519 DOI: 10.14309/ctg.0000000000000477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 02/09/2022] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION Despite studies showing improved safety, efficacy, and cost-effectiveness of endoscopic resection for nonmalignant colorectal polyps, colectomy rates for nonmalignant colorectal polyps have been increasing in the United States and Europe. Given this alarming trend, we aimed to investigate whether colectomy rates for nonmalignant colorectal polyps are increasing or declining in a large, integrated, community-based healthcare system with access to advanced endoscopic resection procedures. METHODS We identified all individuals aged 50-85 years who underwent a colonoscopy between 2008 and 2018 and were diagnosed with a nonmalignant colorectal polyp(s) at the Kaiser Permanente Northern California integrated healthcare system. Among these individuals, we identified those who underwent a colectomy for nonmalignant colorectal polyps within 12 months after the colonoscopy. We calculated annual colectomy rates for nonmalignant colorectal polyps and stratified rates by age, sex, and race and ethnicity. Changes in rates over time were tested by the Cochran-Armitage test for a linear trend. RESULTS Among 229,730 patients who were diagnosed with nonmalignant colorectal polyps between 2008 and 2018, 1,611 patients underwent a colectomy. Colectomy rates for nonmalignant colorectal polyps decreased significantly from 125 per 10,000 patients with nonmalignant polyps in 2008 to 12 per 10,000 patients with nonmalignant polyps in 2018 (P < 0.001 for trend). When stratified by age, sex, and race and ethnicity, colectomy rates for nonmalignant colorectal polyps also significantly declined from 2008 to 2018. DISCUSSION In a large, ethnically diverse, community-based population in the United States, we found that colectomy rates for nonmalignant colorectal polyps declined significantly over the past decade likely because of the establishment of advanced endoscopy centers, improved care coordination, and an organized colorectal cancer screening program.
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Affiliation(s)
- Asim Alam
- Internal Medicine/Preventive Medicine Residency Program, Kaiser Permanente San Francisco Medical Center, San Francisco, California, USA;
| | - Christopher Ma
- Division of Gastroenterology & Hepatology, Department of Medicine, University of Calgary, Calgary, Alberta, Canada, Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Sheng-Fang Jiang
- Division of Research, Kaiser Permanente Northern California, Oakland, California, USA;
| | - Christopher D. Jensen
- Division of Research, Kaiser Permanente Northern California, Oakland, California, USA;
| | - Kenneth H. Webb
- University of California, Berkeley, School of Public Health and Haas School of Business, Berkeley, California, USA;
| | - Eshandeep S. Boparai
- Department of Gastroenterology, Kaiser Permanente San Francisco Medical Center, San Francisco, California, USA;
| | - Terry L. Jue
- Division of Gastroenterology and Hepatology, Mayo Clinic, Scottsdale, Arizona, USA;
| | - Craig A. Munroe
- Division of Gastroenterology, University of California San Francisco, San Francisco, California, USA;
| | - Suraj Gupta
- Department of Gastroenterology, Kaiser Permanente San Francisco Medical Center, San Francisco, California, USA;
| | - Jeffrey Fox
- Department of Gastroenterology, Kaiser Permanente San Rafael Medical Center, San Rafael, California, USA.
| | - Christopher M. Hamerski
- Department of Gastroenterology, Kaiser Permanente San Francisco Medical Center, San Francisco, California, USA;
| | - Fernando S. Velayos
- Department of Gastroenterology, Kaiser Permanente San Francisco Medical Center, San Francisco, California, USA;
| | - Douglas A. Corley
- Division of Research, Kaiser Permanente Northern California, Oakland, California, USA;
- Department of Gastroenterology, Kaiser Permanente San Francisco Medical Center, San Francisco, California, USA;
| | - Jeffrey K. Lee
- Division of Research, Kaiser Permanente Northern California, Oakland, California, USA;
- Department of Gastroenterology, Kaiser Permanente San Francisco Medical Center, San Francisco, California, USA;
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Nguyen NQ, Hamerski CM, Nett A, Watson RR, Rigopoulos M, Binmoeller KF. Endoscopic ultrasound-guided gastroenterostomy using an oroenteric catheter-assisted technique: a retrospective analysis. Endoscopy 2021; 53:1246-1249. [PMID: 33860483 DOI: 10.1055/a-1392-0904] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND : This study evaluated an oroenteric catheter (OEC)-assisted technique to distend the enteric loop for endoscopic ultrasound-guided gastroenterostomy (EUS-GE) in patients with gastric outlet obstruction (GOO). METHODS : Patient outcomes were reviewed. Proximal enteric loops were filled with water via an OEC (7 Fr or 8 Fr), providing a target for EUS-GE using a lumen-apposing metal stent (15-mm caliber). Clinical success was defined as toleration of a non-liquid diet by Day 3. RESULTS : 42 patients (mean age 73.1 [SEM 2.8] years; 23 male) underwent EUS-GE for malignant (n = 37) and benign (n = 5) duodenal strictures. EUS-GE creation was successful in 41/42 (98 %), with mean procedure time of 36 (SEM 3) minutes and no serious complications. Clinical success was achieved in 39/42 (93 %) at 5.7 (SEM 2.6) months' follow-up. Of 14 patients who died, 13 (93 %) maintained oral intake until death. EUS-GE provided good symptom relief in all 28 surviving patients until follow-up. CONCLUSIONS : OEC-assisted EUS-GE provided satisfactory relief of GOO symptoms, with high technical success (98 %) and no serious complications.
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Affiliation(s)
- Nam Q Nguyen
- Interventional Endoscopy Services, California Pacific Medical Center, San Francisco, California, United States.,Department of Gastroenterology, Royal Adelaide Hospital, Adelaide, South Australia
| | - Christopher M Hamerski
- Interventional Endoscopy Services, California Pacific Medical Center, San Francisco, California, United States
| | - Andrew Nett
- Interventional Endoscopy Services, California Pacific Medical Center, San Francisco, California, United States
| | - Rabindra R Watson
- Interventional Endoscopy Services, California Pacific Medical Center, San Francisco, California, United States
| | - Morgan Rigopoulos
- Interventional Endoscopy Services, California Pacific Medical Center, San Francisco, California, United States
| | - Kenneth F Binmoeller
- Interventional Endoscopy Services, California Pacific Medical Center, San Francisco, California, United States
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Choi AY, Moosvi Z, Shah S, Roccato MK, Wang AY, Hamerski CM, Samarasena JB. Underwater versus conventional EMR for colorectal polyps: systematic review and meta-analysis. Gastrointest Endosc 2021; 93:378-389. [PMID: 33068608 DOI: 10.1016/j.gie.2020.10.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 10/08/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND AND AIMS Underwater EMR (UEMR) has emerged as an attractive alternative to conventional EMR (CEMR) for the resection of colorectal polyps. The purpose of this systematic review and meta-analysis was to compare UEMR and CEMR for the resection of colorectal polyps with respect to efficacy and safety. METHODS A literature search was performed across multiple databases, including MEDLINE/PubMed, The Cochrane Library, CINAHL, Google Scholar, and Scopus, for studies that were published until May 2020. Only studies that compared the resection of colorectal polyps using UEMR with CEMR were included. Outcomes examined included rates of en bloc resection, recurrence, postprocedure bleeding, perforation, and resection time. RESULTS Seven studies totaling 1237 polyps were included: 614 polyps were resected with UEMR and 623 polyps with CEMR. UEMR was associated with a significant increase in the rate of overall en bloc resection (odds ratio [OR], 1.84; 95% confidence interval [CI], 1.42-2.39; P < .001; I2 = 38%), with subgroup analysis showing a significant increase in the rates of en bloc resection in polyps ≥20 mm (OR, 1.51; 95% CI, 1.06-2.14; P = .02; I2 = 44%) but not in polyps <20 mm (OR, 1.07; 95% CI, .65-1.76; P = .80; I2 = 27%), and with a significant reduction in the rate of recurrence (OR, .30; 95% CI, .16-.57; P = .0002; I2 = 0%), again driven by improvements in polyps ≥20 mm. There was no significant difference in postprocedure bleeding (OR, 1.11; 95% CI, .57-2.17; P = .76; I2 = 0%) or perforation (OR, .72; 95% CI, .19-2.83; P = .64; I2 = 0%). CONCLUSIONS The results of this systematic review and meta-analysis demonstrate that UEMR is a safe and efficacious alternative to CEMR. With appropriate training, UEMR may be strongly considered as a first-line option for resection of colorectal polyps.
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Affiliation(s)
- Alyssa Y Choi
- H. H. Chao Comprehensive Digestive Disease Center, University of California, Department of Medicine, Irvine Medical Center, Orange, California, USA
| | - Zain Moosvi
- H. H. Chao Comprehensive Digestive Disease Center, University of California, Department of Medicine, Irvine Medical Center, Orange, California, USA
| | - Sagar Shah
- University of California, Irvine School of Medicine, Irvine, California, USA
| | - Mary Kathryn Roccato
- H. H. Chao Comprehensive Digestive Disease Center, University of California, Department of Medicine, Irvine Medical Center, Orange, California, USA
| | - Andrew Y Wang
- Division of Gastroenterology and Hepatology, University of Virginia, Charlottesville, Virginia, USA
| | - Christopher M Hamerski
- Interventional Endoscopy Services, California Pacific Medical Center, San Francisco, California, USA
| | - Jason B Samarasena
- H. H. Chao Comprehensive Digestive Disease Center, University of California, Department of Medicine, Irvine Medical Center, Orange, California, USA
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Aadam AA, Wani S, Amick A, Shah JN, Bhat YM, Hamerski CM, Klapman JB, Muthusamy VR, Watson RR, Rademaker AW, Keswani RN, Keefer L, Das A, Komanduri S. A randomized controlled cross-over trial and cost analysis comparing endoscopic ultrasound fine needle aspiration and fine needle biopsy. Endosc Int Open 2016; 4:E497-505. [PMID: 27227104 PMCID: PMC4874800 DOI: 10.1055/s-0042-106958] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND AND STUDY AIMS Techniques to optimize endoscopic ultrasound-guided tissue acquisition (EUS-TA) in a variety of lesion types have not yet been established. The primary aim of this study was to compare the diagnostic yield (DY) of endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) to endoscopic ultrasound-guided fine needle biopsy (EUS-FNB) for pancreatic and non-pancreatic masses. PATIENTS AND METHODS Consecutive patients referred for EUS-TA underwent randomization to EUS-FNA or EUS-FNB at four tertiary-care medical centers. A maximum of three passes were allowed for the initial method of EUS-TA and patients were crossed over to the other arm based on on-site specimen adequacy. RESULTS A total of 140 patients were enrolled. The overall DY was significantly higher with specimens obtained by EUS-FNB compared to EUS-FNA (90.0 % vs. 67.1 %, P = 0.002). While there was no difference in the DY between the two groups for pancreatic masses (FNB: 91.7 % vs. FNA: 78.4 %, P = 0.19), the DY of EUS-FNB was higher than the EUS-FNA for non-pancreatic lesions (88.2 % vs. 54.5 %, P = 0.006). Specimen adequacy was higher for EUS-FNB compared to EUS-FNA for all lesions (P = 0.006). There was a significant rescue effect of crossover from failed FNA to FNB in 27 out of 28 cases (96.5 %, P = 0.0003). Decision analysis showed that the strategy of EUS-FNB was cost saving compared to EUS-FNA over a wide range of cost and outcome probabilities. CONCLUSIONS RESULTS of this RCT and decision analysis demonstrate superior DY and specimen adequacy for solid mass lesions sampled by EUS-FNB.
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Affiliation(s)
- A. Aziz Aadam
- Division of Gastroenterology and Hepatology, Northwestern University, Chicago, Illinois, United States
| | - Sachin Wani
- Division of Gastroenterology and Hepatology, University of Colorado Anschutz Medical Center, Aurora, Colorado, United States
| | - Ashley Amick
- Division of Gastroenterology and Hepatology, Northwestern University, Chicago, Illinois, United States
| | - Janak N. Shah
- Paul May and Frank Stein Interventional Endoscopy Center, California Pacific Medical Center, San Francisco, California, United States
| | - Yasser M. Bhat
- Paul May and Frank Stein Interventional Endoscopy Center, California Pacific Medical Center, San Francisco, California, United States
| | - Christopher M. Hamerski
- Paul May and Frank Stein Interventional Endoscopy Center, California Pacific Medical Center, San Francisco, California, United States
| | - Jason B. Klapman
- Division of Gastroenterology, Moffitt Cancer Center, Tampa, Florida, United States
| | - V. Raman Muthusamy
- Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine at University of California, Los Angeles (UCLA), Los Angeles, California, United States
| | - Rabindra R. Watson
- Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine at University of California, Los Angeles (UCLA), Los Angeles, California, United States
| | - Alfred W. Rademaker
- Department of Preventative Medicine, Northwestern University, Chicago, Illinois, United States
| | - Rajesh N. Keswani
- Division of Gastroenterology and Hepatology, Northwestern University, Chicago, Illinois, United States
| | - Laurie Keefer
- Division of Gastroenterology and Hepatology, Northwestern University, Chicago, Illinois, United States
| | - Ananya Das
- Arizona Digestive Health, Gilbert, Arizona, United States
| | - Srinadh Komanduri
- Division of Gastroenterology and Hepatology, Northwestern University, Chicago, Illinois, United States,Corresponding author Srinadh Komanduri, MD MS Division of Gastroenterology and HepatologyFeinberg School of MedicineNorthwestern University675 N. St. Clair StreetGalter Pavilion 17-250Chicago, IL 60611
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Watson RR, Hamerski CM, Muthusamy V. Piercing of the ampulla via the stent-in-stent biliary metal stent technique. Gastrointest Endosc 2015; 81:460-1. [PMID: 24981804 DOI: 10.1016/j.gie.2014.05.299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Accepted: 05/14/2014] [Indexed: 02/08/2023]
Affiliation(s)
- Rabindra R Watson
- Division of Digestive Diseases, University of California at Los Angeles School of Medicine, Los Angeles, California, USA
| | - Christopher M Hamerski
- Interventional Endoscopy Services, California Pacific Medical Center, San Francisco, California, USA
| | - Venkataraman Muthusamy
- Division of Digestive Diseases, University of California at Los Angeles School of Medicine, Los Angeles, California, USA
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Ge PS, Hamerski CM, Watson RR, Komanduri S, Cinnor BB, Bidari K, Klapman JB, Lin CL, Shah JN, Wani S, Donahue TR, Muthusamy VR. Plastic biliary stent patency in patients with locally advanced pancreatic adenocarcinoma receiving downstaging chemotherapy. Gastrointest Endosc 2015; 81:360-6. [PMID: 25442083 DOI: 10.1016/j.gie.2014.08.020] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2014] [Accepted: 08/18/2014] [Indexed: 02/08/2023]
Abstract
BACKGROUND Plastic stents in patients with biliary obstruction caused by pancreatic adenocarcinoma are typically exchanged at 3-month intervals. Plastic stents may have reduced durability in patients receiving chemotherapy. OBJECTIVE To determine the duration of plastic biliary stent patency in patients undergoing chemotherapy for pancreatic adenocarcinoma. DESIGN Retrospective, multicenter cohort study. SETTING Three tertiary academic referral centers. PATIENTS A total of 173 patients receiving downstaging chemotherapy for locally advanced or borderline resectable pancreatic adenocarcinoma from 1996 to 2013. INTERVENTIONS Placement of 10F or larger plastic biliary stents. MAIN OUTCOME MEASUREMENTS Primary outcome was overall duration of stent patency. Secondary outcomes included the incidence of premature stent exchange (because of cholangitis or jaundice) and hospitalization rates. RESULTS A total of 233 plastic stents were placed, and the overall median duration of stent patency was 53 days (interquartile range [IQR] 25-99 days). Eighty-seven stents were removed at the time of surgical resection, and 63 stents were exchanged routinely per protocol. The remaining 83 stent exchanges were performed for worsening liver function test results, jaundice, or cholangitis, representing a 35.6% rate of premature stent exchange. The median stent patency duration in the premature stent exchange group was 49 days (IQR 25-91 days) with a 44.6% hospitalization rate. The overall rate of cholangitis was 15.0% of stent exchanges, occurring a median of 56 days after stent placement (IQR 26-89 days). LIMITATIONS Retrospective study. CONCLUSIONS Plastic biliary stents placed during chemotherapy/chemoradiation for pancreatic adenocarcinoma have a shorter-than-expected patency duration, and a substantial number of patients will require premature stent exchange. Consideration should be given to shortening the interval for plastic biliary stent exchange.
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Affiliation(s)
- Phillip S Ge
- Division of Digestive Diseases, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - Christopher M Hamerski
- Interventional Endoscopy Services, California Pacific Medical Center, San Francisco, California, USA
| | - Rabindra R Watson
- Division of Digestive Diseases, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - Srinadh Komanduri
- Division of Gastroenterology, Northwestern Memorial Hospital, Chicago, Illinois, USA
| | - Birtukan B Cinnor
- Department of Internal Medicine, Oregon Health and Science University, Portland, Oregon, USA
| | - Kiran Bidari
- Division of Gastroenterology, Northwestern Memorial Hospital, Chicago, Illinois, USA
| | - Jason B Klapman
- Gastrointestinal Tumor Program, Section of Endoscopic Oncology, Moffitt Cancer Center, University of South Florida, Tampa, Florida, USA
| | - Cui L Lin
- Gastrointestinal Tumor Program, Section of Endoscopic Oncology, Moffitt Cancer Center, University of South Florida, Tampa, Florida, USA
| | - Janak N Shah
- Interventional Endoscopy Services, California Pacific Medical Center, San Francisco, California, USA
| | - Sachin Wani
- Division of Gastroenterology and Hepatology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Timothy R Donahue
- Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - V Raman Muthusamy
- Division of Digestive Diseases, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
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Hamerski CM, Lane JS, Muthusamy VR. Indolent primary aortoduodenal fistula presenting as iron deficiency anemia. Clin Gastroenterol Hepatol 2011; 9:A26. [PMID: 21723227 DOI: 10.1016/j.cgh.2011.06.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Revised: 06/15/2011] [Accepted: 06/22/2011] [Indexed: 02/07/2023]
Affiliation(s)
- Christopher M Hamerski
- Department of Gastroenterology, University of California, Irvine Medical Center, Orange, California, USA
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Abstract
The chronic exposure of astronauts to microgravity results in structural degradation of their lower limb bones. Currently, no effective exercise countermeasure exists. On Earth, the impact loading that occurs with regular locomotion is associated with the maintenance of bone's structural integrity, but impact loads are rarely experienced in space. Accurately mimicking Earth-like impact loads in a reduced-gravity environment should help to reduce the degradation of bone caused by weightlessness. We previously showed that running with externally applied horizontal forces (AHF) in the anterior direction qualitatively simulates the high-impact loading associated with downhill running on Earth. We hypothesized that running with AHF at simulated reduced gravity would produce impact loads equal to or greater than values experienced during normal running at Earth gravity. With an AHF of 20% of gravity-specific body weight at all gravity levels, impact force peaks increased 74%, average impact loading rates increased 46%, and maximum impact loading rates increased 89% compared to running without any AHF. In contrast, AHF did not substantially affect active force peaks. Duty factor and stride frequency decreased modestly with AHF at all gravity levels. We found that running with an AHF in simulated reduced gravity produced impact loads equal to or greater than those experienced at Earth gravity. An appropriate AHF could easily augment existing partial gravity treadmill running exercise countermeasures used during spaceflight and help prevent musculoskeletal degradation.
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Affiliation(s)
- Y H Chang
- Locomotion Laboratory, Department of Integrative Biology, University of California, Berkeley, CA 94720-3140, USA.
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Abstract
It is difficult to distinguish the independent effects of gravity from those of inertia on a running animal. Simply adding mass proportionally changes both the weight (gravitational force) and mass (inertial force) of the animal. We measured ground reaction forces for eight male humans running normally at 3 m s(−)(1) and under three experimental treatments: added gravitational and inertial forces, added inertial forces and reduced gravitational forces. Subjects ran at 110, 120 and 130 % of normal weight and mass, at 110, 120 and 130 % of normal mass while maintaining 100 % normal weight, and at 25, 50 and 75 % of normal weight while maintaining 100 % normal mass. The peak active vertical forces generated changed with weight, but did not change with mass. Surprisingly, horizontal impulses changed substantially more with weight than with mass. Gravity exerted a greater influence than inertia on both vertical and horizontal forces generated against the ground during running. Subjects changed vertical and horizontal forces proportionately at corresponding times in the step cycle to maintain the orientation of the resultant vector despite a nearly threefold change in magnitude across treatments. Maintaining the orientation of the resultant vector during periods of high force generation aligns the vector with the leg to minimize muscle forces.
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Affiliation(s)
- Y H Chang
- Locomotion Laboratory, Department of Integrative Biology, University of California, Berkeley, CA 94720-3140, USA. younghui@uclink4. berkeley.edu
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