Appendix-A

Interview guide – warehouse managers1. Would you please introduce yourself, your

background and experience in warehousing and material handling?

2. Would you please give a brief introduction about your company and its business?

3. If you want to rank the issues and problems in your warehouse, what would be the problems and their ranking? (These concerns may fit into any of the aspects of your business, for instance physical structure, performance evaluation, cooperation with other companies and departments, warehousing operations, etc.)

4. If you compare your current problems and priorities with problems and priorities you had some years ago, what would be the difference? What is the reason of this change (if any)?

5. What do you expect to be your future concerns? How do you see the future of the warehousing business?

Interview guide – consultants1. Would you please introduce yourself, your

background and experience in warehousing and material handling?

2. What type of consulting services do you offer?3. According to your experience what are the main

(or common) issues that warehouses come to ask consultancy services to address?

4. If you compare current problems and priorities of your clients with the problems and priorities they had some years ago, what would be the difference? What is the reason of this change (if any)?

5. What future challenges do you see for the warehousing business? In another words, what do you predict to be the main trends of this area in future?

6. According to your experience with different clients, do you see any issue that is usually neglected by warehouse managers that you think should not be overlooked?

Appendix-B

Table A.1 Classification of the reviewed papers based on methods employedMethod Papers

Mathematical modelling with test data [1-113]

Real case data and context [2-6,114-150]

Simulation methods [1,6,122,128,134,135,151-184]

Case study and empirical example [129,137,185-210]

Survey [211-227]

Conceptual [228-237]

Literature review [238-243]

* Some papers used more than one method

Table A.2 Classification of the methods employed for top journalsResearch Method

Journals

Mat

hem

atic

al m

odel

ling

with

te

st d

ata

Rea

l cas

e da

ta a

nd c

onte

xt

Sim

ulat

ion

met

hods

Cas

e st

udy

and

empi

rica

l ex

ampl

e

Lite

ratu

re r

evie

w

Surv

ey

Con

cept

ual

International Journal of Production Research 21 1 5 5

IIE Transactions (Institute of Industrial Engineers) 12 3 1

European Journal of Operational Research 7 2 2 1 5

International Journal of Production Economics 8 2 1 1 1

Computers and Industrial Engineering 6 3 2 2Expert Systems with Applications 6 4 2Ergonomics 7 3

International Journal of Physical Distribution and Logistics Management 1 3 3

The International Journal of Logistics Management 1 1 3Total* 62 23 16 15 5 3 1

* Some papers used more than one method

Appendix-C

Table A.3 Classification of the reviewed papers (excluding literature review papers)Categories Sub-categories

Operation strategy

Strategic planning, e.g. managerial philosophies, expansion, outsourcing, risk management [46,47,185,186,198,199,204,234]Operational policy making, e.g. LIFO vs. FIFO, material flow pattern, employment policy [5,120,147,195,200-203]

Infrastructure design

Specific considerations in warehouse design, e.g. energy, security, design factor influencing performance [11,143,159,176,189,190,209,228,232,243]Size of the warehouse and overall design of departments [7,9,37,49,57,61,71,72,75,77,106-111,154,156-158,233]Department design, e.g. aisle configuration, number, length [15,31,32,76,81,82,84,85,90,153,184]Configuration of equipment, e.g. racks configuration, location of conveyor bands [66,92,93,136,145,165]

Human resource management

Staffing [4,94,121,208]Psychological and behavioral consideration of the warehousing work [41,197,212,214,235]Ergonomics aspects [24,44,62,73,80,100,113,116,122-128,144,146,173,210,211,221,227,229,231]Employees safety [140,194,220]

Technology

Selection of hard equipment and technologies [1,8,13,14,17,22,36,95,114,115,119,152]Design, planning and application of soft technologies:

Data gathering and analysis techniques, e.g. barcoding, RFID, data mining, tracking [21,29,67,104,115,134,141,147,148,169,183,207,208,222,225,230,237]

Decision support systems [96,204].Warehouse management systems [129,148,191]Operational aspects of equipment [25,99,114,151,163,192]

Performance evaluation

Overall performance of the warehouse

[16,33,48,54,56,69,98,102,117,118,135,138,139,142,143,162,170,177,178,187,188,191,193,196,206,213,214,216-219,224,226,235]Performance of the departments or operation [43,88,89,98,166,167,182,205]Performance of specific technology, tool or activity [26,43,53,64,65,68,79,99,168,215]

Receiving/ Shipping

Preparation operation [120,172]Scheduling and assignment of resources, e.g. truck and docks [3,133,137,160]

Storage

Product classification [63,70]Storage policy [82,90,161,164,174,177,184]Department assignment [12]Zone assignment [2,45,57,59,70,149]Storage location assignment [6,30,45,103-105,182]Space allocation for different products [130]Operational aspects, e.g. sequencing and scheduling of operations [18,23,50,74,112,131,150,164,171,181,182]

Picking

Order picking policy [5,58,78,174]Order batching [10,20,27,28,34,39,40,42,60]Picker routing [35,91,132,161,164,179,180]Automated picking operation, e.g. dwell point location and picking sequence [18,23,51,52,74,86,87,97,99,104,105,112,131,132,150,155,171,181,182]Combination of picking plan with other activities, e.g. batching and packing [55,101,129,202]

Connection to other departments/ companies

Connection to production [83,131,149,175]Connection to transport planning [38,236]Contracting aspects [19,223]

Reviewed papers1. Butler LJ, Bright G (2010) Control strategy for a mobile self-balancing materials handling platform. Journal of Engineering, Design and Technology 8 (1):6-27.2. Alizon F, Dallery Y, Essafi I, Feillet D (2009) Optimising material handling costs in an assembly workshop. International Journal of Production Research 47 (14):3853-3866.3. Yu W, Egbelu PJ (2008) Scheduling of inbound and outbound trucks in cross docking systems with temporary storage. European Journal of Operational Research 184:377-396.4. Bard JF, Morton DP, Wang YM (2007) Workforce planning at USPS mail processing and distribution centers using stochastic optimization. Annals of Operations Research 155 (1):51-78.

5. Lam CHY, Choy KL, Ho GTS, Chung SH (2012) A hybrid case-GA-based decision support model for warehouse operation in fulfilling cross-border orders. Expert Systems with Applications 39 (8):7015-7028.6. Chan FTS, Chan HK (2011) Improving the productivity of order picking of a manual-pick and multi-level rack distribution warehouse through the implementation of class-based storage. Expert Systems with Applications 38 (3):2686-2700.7. Aiello G, Enea M, Galante G (2002) An integrated approach to the facilities and material handling system design. International Journal of Production Research 40 (15 SPEC.):4007-4017.8. Aittola J (2005) Total warehouse automation solution for the paper industry. International Paperworld IPW (5):12-13.9. Al-Araidah O, Krishnamurthy A, Malmborg CJ (2007) A comparative study of single-phase and two-phase approaches for the layout problem with material handling costs. International Journal of Production Research 45 (4):951-970.10. Albareda-Sambola M, Alonso-Ayuso A, Molina E, De Blas CS (2009) Variable neighborhood search for order batching in a warehouse. Asia-Pacific Journal of Operational Research 26 (5):655-683.11. Altwies JE, Reindl DT (2002) Passive thermal energy storage in refregerated warehouses. International Journal of Refrigeration 25 (1):149-157.12. Bartholdi JJ, Hackman ST (2008) Allocating space in a forward pick area of a distribution center for small parts. IIE Transactions (Institute of Industrial Engineers) 40 (11):1046-1053.13. Berman S, Edan Y (2002) Decentralized autonomous AGV system for material handling. International Journal of Production Research 40 (15 SPEC.):3995-4006.14. Berman S, Edan Y, Jamshidi M (2003) Navigation of decentralized autonomous automatic guided vehicles in material handling. IEEE Transactions on Robotics and Automation 19 (4):743-749.15. Caron F, Marchet G, Perego A (2000) Optimal layout in low-level picker-to-part systems. International Journal of Production Research 38 (1):101-117.16. Chakraborty PS, Majumder G, Sarkar B (2007) Performance evaluation of material handling system for a warehouse. Journal of Scientific and Industrial Research 66 (4):325-329.17. Chakraborty S, Banik D (2006) Design of a material handling equipment selection model using analytic hierarchy process. International Journal of Advanced Manufacturing Technology 28 (11-12):1237-1245.18. Chan FTS, Kumar V (2009) Hybrid TSSA algorithm-based approach to solve warehouse-scheduling problems. International Journal of Production Research 47 (4):919-940.19. Chen FY, Hum SH, Sun J (2001) Analysis of third-party warehousing contracts with commitments. European Journal of Operational Research 131 (3):603-610.20. Chen MC, Huang CL, Chen KY, Wu HP (2005) Aggregation of orders in distribution centers using data mining. Expert Systems with Applications 28 (3):453-460.21. Chow HKH, Choy KL, Lee WB, Lau KC (2006) Design of a RFID case-based resource management system for warehouse operations. Expert Systems with Applications 30 (4):561-576.22. Chua PSK (2001) Design of an emergency back-up system for overhead material handling operation. Journal of Engineering Design 12 (2):163-170.23. Curry GL, Peters BA, Lee M (2003) Queueing network model for a class of material-handling systems. International Journal of Production Research 41 (16):3901-3920.24. Dempsey PG, McGorry RW, Holihan R (2003) Novel solutions to a difficult materials handling problem. Ergonomics in Design 11 (2):19-22.25. Estanjini RM, Lin Y, Li K, Guo D, Paschalidis IC (2011) Optimizing warehouse forklift dispatching using a sensor network and stochastic learning. IEEE Transactions on Industrial Informatics 7 (3):476-485.26. Foley RD, Frazelle EH, Park BC (2002) Throughput bounds for miniload automated storage/retrieval systems. IIE Transactions (Institute of Industrial Engineers) 34 (10):915-920.27. Gademann AJRM, Van Den Berg JP, Van Der Hoff HH (2001) An order batching algorithm for wave picking in a parallel-aisle warehouse. IIE Transactions (Institute of Industrial Engineers) 33 (5):385-398.28. Gademann N, van de Velde S (2005) Order batching to minimize total travel time in a parallel-aisle warehouse. IIE Transactions (Institute of Industrial Engineers) 37 (1):63-75.29. García A, Seok Chang Y, Valverde R (2006) Impact of new identification and tracking technologies on a distribution center. Computers and Industrial Engineering 51 (3):542-552.30. Gopalakrishnan M, Narayanan S, Bodner DA, Patchigolla KK, Kantamneni RP, Edala NR, Ruff HA (2001) A computerized system for storage location assignment in third party warehouses. International Journal of Industrial Engineering : Theory Applications and Practice 8 (2):159-167.31. Gue KR, Ivanović G, Meller RD (2012) A unit-load warehouse with multiple pickup and deposit points and non-traditional aisles. Transportation Research Part E: Logistics and Transportation Review 48 (4):795-806.32. Gue KR, Meller RD (2009) Aisle configurationsfor unit-load warehouses. IIE Transactions (Institute of Industrial Engineers) 41 (3):171-182.33. Hamdan A, Rogers KJ (2008) Evaluating the efficiency of 3PL logistics operations. International Journal of Production Economics 113 (1):235-244.

34. Henn S (2012) Algorithms for on-line order batching in an order picking warehouse. Computers and Operations Research 39 (11):2549-2563.35. Henn S, Koch S, Gerking H, Wäscher G (2013) A U-shaped layout for manual order-picking systems. Logistics Research 6 (4):245-261.36. Heragu SS, Cai X, Krishnamurthy A, Malmborg CJ (2011) Analytical models for analysis of automated warehouse material handling systems. International Journal of Production Research 49 (22):6833-6861.37. Heragu SS, Du L, Mantel RJ, Schuur PC (2005) Mathematical model for warehouse design and product allocation. International Journal of Production Research 43 (2):327-338.38. Hill J, Galbreth M (2008) A heuristic for single-warehouse multiretailer supply chains with all-unit transportation cost discounts. European Journal of Operational Research 187 (2):473-482.39. Ho YC, Su TS, Shi ZB (2008) Order-batching methods for an order-picking warehouse with two cross aisles. Computers and Industrial Engineering 55 (2):321-347.40. Ho YC, Tseng YY (2006) A study on order-batching methods of order-picking in a distribution centre with two cross-aisles. International Journal of Production Research 44 (17):3391-3417.41. Hoppe A, Heaney CA, Fujishiro K (2010) Stressors, resources, and well-being among Latino and white warehouse workers in the united states. American Journal of Industrial Medicine 53 (3):252-263.42. Hsu CM, Chen KY, Chen MC (2005) Batching orders in warehouses by minimizing travel distance with genetic algorithms. Computers in Industry 56 (2):169-178.43. Hur S, Lee YH, Lim SY, Lee MH (2004) A performance estimation model for AS/RS by M/G/1 queuing system. Computers and Industrial Engineering 46 (2):233-241.44. Jäger M, Jordan C, Luttmann A, Laurig W (2000) Evaluation and assessment of lumbar load during total shifts for occupational manual materials handling jobs within the Dortmund Lumbar Load Study - DOLLY. International Journal of Industrial Ergonomics 25 (6):553-571.45. Jane CC (2000) Storage location assignment in a distribution center. International Journal of Physical Distribution and Logistics Management 30 (1):55-71.46. Jaques N, Morgan C (2004) Adapting the Analytical Hierarchy Process to Identify Inventory Risk. The International Journal of Logistics Management 15 (2):93-105.47. Jiang B (2005) The decision-making on an in-house logistic division's operation strategies. International Journal of Production Economics 96 (1):37-46.48. Kauffmann PJ, Jacobs DA, Fernandez AA (2002) Use of Bayesian probabilities to identify and improve distribution center error rates. Production and Inventory Management Journal 43 (1-2):1-5+V.49. Kengpol A (2004) Design of a decision support system to evaluate the investment in a new distribution centre. International Journal of Production Economics 90 (1):59-70.50. Khojasteh-Ghamari Y, Son JD (2008) Order picking problem in a multi-aisle automated warehouse served by a single storage/retrieval machine. International Journal of Information and Management Sciences 19 (4):651-665.51. Kim BI, Heragu SS, Graves RJ, St. Onge A (2003) Clustering-based order-picking sequence algorithm for an automated warehouse. International Journal of Production Research 41 (15):3445-3460.52. Kim BI, Heragu SS, Graves RJ, St. Onge A (2003) Realization of a short cycle time in warehouse replenishment and order picking. International Journal of Production Research 41 (2):349-364.53. Koh SG, Kim BS, Kim BN (2002) Travel time model for the warehousing system with a tower crane S/R machine. Computers and Industrial Engineering 43 (3):495-507.54. Korpela J, Lehmusvaara A, Nisonen J (2007) Warehouse operator selection by combining AHP and DEA methodologies. International Journal of Production Economics 108 (1-2):135-142.55. Kulak O, Sahin Y, Taner ME (2012) Joint order batching and picker routing in single and multiple-cross-aisle warehouses using cluster-based tabu search algorithms. Flexible Services and Manufacturing Journal 24 (1):52-80.56. Kuo C-H, Douglas K, Randhawa S (2000) Evaluation of performance measurement in distribution centers. Journal of Engineering Valuation and Cost Analysis 3 (6):389-401.57. Lai KK, Xue J, Zhang G (2002) Layout design for a paper reel warehouse: A two-stage heuristic approach. International Journal of Production Economics 75 (3):231-243.58. Lam CHY, Choy KL, Chung SH (2011) A decision support system to facilitate warehouse order fulfillment in cross-border supply chain. Journal of Manufacturing Technology Management 22 (8):972-983.59. Le-Duc T, De Koster RBM (2005) Travel distance estimation and storage zone optimization in a 2-block class-based storage strategy warehouse. International Journal of Production Research 43 (17):3561-3581.60. Le-Duc T, de Koster RMBM (2007) Travel time estimation and order batching in a 2-block warehouse. European Journal of Operational Research 176 (1):374-388.61. Lee MK, Elsayed EA (2005) Optimization of warehouse storage capacity under a dedicated storage policy. International Journal of Production Research 43 (9):1785-1805.62. Li KW, Yu Rf, Gao Y, Maikala RV, Tsai HH (2009) Physiological and perceptual responses in male Chinese workers performing combined manual materials handling tasks. International Journal of Industrial Ergonomics 39 (2):422-427.

63. Li ML (2009) Goods classification based on distribution center environmental factors. International Journal of Production Economics 119 (2):240-246.64. Ludwig TD, Goomas DT (2009) Real-time performance monitoring, goal-setting, and feedback for forklift drivers in a distribution centre. Journal of Occupational and Organizational Psychology 82 (2):391-403.65. Malmborg CJ (2000) Interleaving models for the analysis of twin shuttle automated storage and retrieval systems. International Journal of Production Research 38 (18):4599-4610.66. Malmborg CJ (2001) Rule of thumb heuristics for configuring storage racks in automated storage and retrieval systems design. International Journal of Production Research 39 (3):511-527.67. Mandy YY, Choy KL, Tan KH, Henry CW, Edmond LH (2009) The design of an RFID-enhanced autonomous storage planning system for 3PL warehouses. International Journal of Value Chain Management 3 (1):108-128.68. Meller RD, Klote JF (2004) A throughput model for carousel/VLM pods. IIE Transactions (Institute of Industrial Engineers) 36 (8):725-741.69. Mohammad YA (2004) Statistical evaluation of manual material handling in a salt purification plant. Jordan Journal of Applied Sciences - Natural Sciences 6 (2):32-39.70. Muppani VR, Adil GK (2008) Efficient formation of storage classes for warehouse storage location assignment: A simulated annealing approach. Omega 36 (4):609-618.71. Nehzati T, Rashidi Bajgan H, Ismail N, Nehzati S (2010) Web-enabled decision support system for warehouse layout problem. Journal of Applied Sciences 10 (19):2261-2268.72. Nehzati T, Rashidi-Bajgan H, Ismail N (2011) Development of a decision support system using Tabu Search algorithm for the warehouse layout problem. Journal of the Chinese Institute of Industrial Engineers 28 (4):281-297.73. Okunribido OO, Magnusson M, Pope M (2006) Delivery drivers and low-back pain: A study of the exposures to posture demands, manual materials handling and whole-body vibration. International Journal of Industrial Ergonomics 36 (3):265-273.74. Oliveira JA (2007) Scheduling the truckload operations in automatic warehouses. European Journal of Operational Research 179 (3):723-735.75. Önüt S, Tuzkaya UR, Doǧaç B (2008) A particle swarm optimization algorithm for the multiple-level warehouse layout design problem. Computers and Industrial Engineering 54 (4):783-799.76. Öztürkoǧlu O, Gue KR, Meller RD (2012) Optimal unit-load warehouse designs for single-command operations. IIE Transactions (Institute of Industrial Engineers) 44 (6):459-475.77. Pan X, Ding FY, Ford R (2008) Capacity analysis of a towline conveyor system in a distribution center. International Journal of Logistics Systems and Management 4 (2):219-232.78. Parikh PJ, Meller RD (2008) Selecting between batch and zone order picking strategies in a distribution center. Transportation Research Part E: Logistics and Transportation Review 44 (5):696-719.79. Park BC, Foley RD, White JA, Frazelle EH (2003) Dual command travel times and miniload system throughput with turnover-based storage. IIE Transactions (Institute of Industrial Engineers) 35 (4):343-355.80. Perez MA, Nussbaum MA (2006) Posture and motion variability in non-repetitive manual materials handling tasks. Human Movement Science 25 (3):409-421.81. Pohl LM, Meller RD, Gue KR (2009) An analysis of dual-command operations in common warehouse designs. Transportation Research Part E: Logistics and Transportation Review 45 (3):367-379.82. Pohl LM, Meller RD, Gue KR (2011) Turnover-based storage in non-traditional unit-load warehouse designs. IIE Transactions (Institute of Industrial Engineers) 43 (10):703-720.83. Poon TC, Choy KL, Cheng CK, Lao SI, Lam HY (2011) Effective selection and allocation of material handling equipment for stochastic production material demand problems using genetic algorithm. Expert Systems with Applications 38 (10):12497-12505.84. Roodbergen K, Vis I (2006) A model for warehouse layout. IIE Transactions (Institute of Industrial Engineers) 38 (10):799-811.85. Roodbergen KJ, Sharp GP, Vis IFA (2008) Designing the layout structure of manual order picking areas in warehouses. IIE Transactions (Institute of Industrial Engineers) 40 (11):1032-1045.86. Rubrico JIU, Higashi T, Tamura H, Ota J (2011) Online rescheduling of multiple picking agents for warehouse management. Robotics and Computer-Integrated Manufacturing 27 (1):62-71.87. Rubrico JIU, Ota J, Higashi T, Tamura H (2008) Metaheuristic scheduling of multiple picking agents for warehouse management. Industrial Robot 35 (1):58-68.88. Russell ML, Meller RD (2003) Cost and throughput modeling of manual and automated order fulfillment systems. IIE Transactions (Institute of Industrial Engineers) 35 (7):589-603.89. Schleyer M, Gue K (2012) Throughput time distribution analysis for a one-block warehouse. Transportation Research Part E: Logistics and Transportation Review 48 (3):652-666.90. Sooksaksun N, Kachitvichyanukul V, Gong DC (2012) A class-based storage warehouse design using a particle swarm optimisation algorithm. International Journal of Operational Research 13 (2):219-237.

91. Theys C, Bräysy O, Dullaert W, Raa B (2010) Using a TSP heuristic for routing order pickers in warehouses. European Journal of Operational Research 200 (3):755-763.92. Ting JH, Tanchoco JMA (2000) Unidirectional circular layout for overhead material handling systems. International Journal of Production Research 38 (16):3913-3935.93. Ting JH, Tanchoco JMA (2001) Optimal bidirectional spine layout for overhead material handling systems. IEEE Transactions on Semiconductor Manufacturing 14 (1):57-64.94. Trappey A, Ho PS (2002) Human resource assignment system for distribution centers. Industrial Management and Data Systems 102 (1-2):64-72.95. Tuzkaya G, Gülsün B, Kahraman C, Özgen D (2010) An integrated fuzzy multi-criteria decision making methodology for material handling equipment selection problem and an application. Expert Systems with Applications 37 (4):2853-2863.96. 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International Journal of Production Research 43 (7):1427-1442.102. Wu YJ, Hou JL (2009) A model for employee performance trend analysis of distribution centers. Human Factors and Ergonomics In Manufacturing 19 (5):413-437.103. Xiao J, Zheng L (2010) A correlated storage location assignment problem in a single-block-multi- aisles warehouse considering BOM information. International Journal of Production Research 48 (5):1321-1338.104. Xue Y, Liu H (2011) RFID-based intelligent storage and retrieval systems in automated warehouse. Journal of Software 6 (9):1844-1850.105. Xue Y, Liu H (2012) Intelligent storage and retrieval systems based on RFID and vision in automated warehouse. Journal of Networks 7 (2):365-369.106. Yang L, Feng Y (2006) Fuzzy multi-level warehouse layout problem: New model and algorithm. Journal of Systems Science and Systems Engineering 15 (4):493-503.107. Zhang GQ, Lai KK (2006) Combining path relinking and genetic algorithms for the multiple-level warehouse layout problem. European Journal of Operational Research 169 (2):413-425.108. Zhang GQ, Lai KK (2010) Tabu search approaches for the multi-level warehouse layout problem with adjacency constraints. Engineering Optimization 42 (8):775-790.109. Zhang GQ, Xue J, Lai KK (2000) A genetic algorithm based heuristic for adjacent paper-reel layout problem. International Journal of Production Research 38 (14):3343-3356.110. Zhang GQ, Xue J, Lai KK (2002) A class of genetic algorithms for multiple-level warehouse layout problems. International Journal of Production Research 40 (3):731-744.111. Zhang Q, Yu YZ, Lai KK (2006) Ant colony system for a fuzzy adjacent multiple-level warehouse layout problem. Journal of Beijing Institute of Technology (English Edition) 15 (4):500-504.112. 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Parida R, Ray PK (2011) A comprehensive framework for physical evaluation of manual material handling tasks. International Journal of Manufacturing Technology and Management 24 (1-4):153-166.118. Sohn SY, Han HK, Jeon HJ (2007) Development of an Air Force Warehouse Logistics Index to continuously improve logistics capabilities. European Journal of Operational Research 183 (1):148-161.119. Yang YC, Lin CL (2013) Performance analysis of cargo-handling equipment from a green container terminal perspective. Transportation Research Part D: Transport and Environment 23:9-11.

120. Lao SI, Choy KL, Ho GTS, Tsim YC, Poon TC, Cheng CK (2012) A real-time food safety management system for receiving operations in distribution centers. Expert Systems with Applications 39 (3):2532-2548.121. Bard JF, Wan L (2005) Weekly scheduling in the service industry: An application to mail processing and distribution centers. IIE Transactions (Institute of Industrial Engineers) 37 (5):379-396.122. Butler HL, Hubley-Kozey CL, Kozey JW (2007) Changes in trunk muscle activation and lumbar-pelvic position associated with abdominal hollowing and reach during a simulated manual material handling task. Ergonomics 50 (3):410-425.123. Dempsey PG, Ciriello VM, Maikala RV, O'Brien NV (2008) Oxygen consumption prediction models for individual and combination materials handling tasks. Ergonomics 51 (11):1776-1789.124. Marras WS, Allread WG, Burr DL, Fathallah FA (2000) Prospective validation of a low-back disorder risk model and assessment of ergonomic interventions associated with manual materials handling tasks. Ergonomics 43 (11):1866-1886.125. Okunribido OO, Magnusson M, Pope MH (2008) The role of whole body vibration, posture and manual materials handling as risk factors for low back pain in occupational drivers. Ergonomics 51 (3):308-329.126. Plamondon A, Denis D, Delisle A, Larivière C, Salazar E (2010) Biomechanical differences between expert and novice workers in a manual material handling task. Ergonomics 53 (10):1239-1253.127. Plamondon A, Larivière C, Delisle A, Denis D, Gagnon D (2012) Relative importance of expertise, lifting height and weight lifted on posture and lumbar external loading during a transfer task in manual material handling. Ergonomics 55 (1):87-102.128. 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