Publications

November 2004 (Revised September 2019)
Background Note

The U.S. Health Club Industry in 2004

By: John R. Wells, Gabriel Ellsworth and Benjamin Weinstock

In 2004, the $16.8 billion U.S. health club industry continued its strong record of growth. There were almost 27,000 health clubs in the United States, up from 6,700 two decades earlier, and these clubs claimed 41 million members, over 14% of the U.S. population.... View Details

Keywords: Health Clubs; Fitness; Gyms; Chain; Weight Loss; Obesity; Exercise; Personal Training; Bally Total Fitness; 24 Hour Fitness; YMCA; Gold's Gym; Curves; Franchise; Franchising; Subscription; Promotional Sales; Promotions; Fixed Costs; Body; Accrual Accounting; Revenue Recognition; Buildings and Facilities; Business Growth and Maturation; Business Model; For-Profit Firms; Trends; Customers; Demographics; Age; Income; Private Equity; Financing and Loans; Profit; Revenue; Geographic Scope; Multinational Firms and Management; Health; Nutrition; Business History; Employees; Retention; Human Capital; Working Conditions; Contracts; Business or Company Management; Goals and Objectives; Growth and Development Strategy; Markets; Demand and Consumers; Supply and Industry; Industry Growth; Industry Structures; Operations; Service Operations; Franchise Ownership; Private Ownership; Public Ownership; Problems and Challenges; Sales; Salesforce Management; Situation or Environment; Opportunities; Nonprofit Organizations; Welfare; Sports; Strategy; Business Strategy; Competition; Competitive Strategy; Consolidation; Corporate Strategy; Customization and Personalization; Expansion; Segmentation; Hardware; Health Industry; United States

September 2013
Case

Advanced Leadership Pathways: Laurent Adamowicz and Bon'App

By: Rosabeth Moss Kanter, Juliane Calingo Schwetz and Patricia Bissett Higgins

After a successful career as Chairman and CEO of Paris-based luxury food company Fauchon, Laurent Adamowicz sought to reduce obesity and improve health outcomes. Adamowicz created a mobile application to provide consumers with more accessible and interpretable... View Details

October 2023
Case

Vida Health: Transforming Chronic Disease Treatment

By: William Sahlman and Nicole Tempest Keller

San Francisco based Vida Health, founded by Stephanie Tilenius, former vice president of Commerce and Payments at Google, was a B2B digital health startup focused on the treatment of cardiometabolic conditions, such as diabetes and obesity. Its innovative digital... View Details

Keywords: Corporate Strategy; Growth and Development Strategy; Demand and Consumers; Health Care and Treatment; Product Marketing; Risk and Uncertainty; Technological Innovation; Health Industry; Technology Industry; United States; California; San Francisco

October 2016 (Revised January 2017)
Background Note

The U.S. Health Club Industry, 2005–2016

By: John R. Wells and Gabriel Ellsworth

In 2015, the U.S. health-club industry generated revenues of $25.8 billion, up from $14.8 billion in 2004. Members of health clubs accounted for 17% of the population, up from 14%. The number of clubs had grown from 26,830 in 2004 to 36,180. In the process, the list of... View Details

August 2003 (Revised August 2024)
Case

Fighting the Battle of the Bulge—Evaluating Do Good/Do Well Innovations in Morbid Obesity Treatment

By: Regina E. Herzlinger and John McDonough

Many health care innovations appear successful; but fail. This is the first case in the Innovating Health Care course that investigates how to create successful health care innovations. It is part of the first module in the course. This module focuses on how to... View Details

Keywords: Three Pillars; Industry Analysis; Health Care and Treatment; Innovation and Invention; Innovation and Management; Medical Specialties; Health Industry

Research Summary

Interaction of biological and psychological drivers of obesity

With a multi-disciplinary team of researchers in nutrition, microbiology, and epidemiology, we received a large grant to fund the Institute for Cardio-Metabolism and Nutrition (ICAN), a major initiative to promote research on obesity and... View Details

September 2008
Article

Firm Heterogeneity and Credit Risk Diversification

By: Samuel G. Hanson, M. Hashem Pesaran and Til Schuermann

This paper examines the impact of neglected heterogeneity on credit risk. We show that neglecting heterogeneity in firm returns and/or default thresholds leads to under estimation of expected losses (EL), and its effect on portfolio risk is ambiguous. Once EL is... View Details

Keywords: Volatility; Credit; Investment Return; Outcome or Result; Risk and Uncertainty; Loss; Diversification; Complexity; United States

Find at Harvard

July 16, 2016
Article

A Game Theoretic Model for Resource Allocation Among Countermeasures with Multiple Attributes

By: Elisabeth C. Paulson, Igor Linkov and Jeffrey Keisler

We study a strategic, two-player, sequential game between an attacker and defender. The defender must allocate resources amongst possible countermeasures and across possible targets. The attacker then chooses a type of threat and a target to attack. This paper proposes... View Details

Keywords: Resource Allocation; Game Theory; Strategy

Find at Harvard

Read Now

30 Apr 2024
Book

When Managers Set Unrealistic Expectations, Employees Cut Ethical Corners

them put much weight on ethical considerations—if they thought about them at all. Compensation systems that seem to invite, if not encourage, unethical behaviour also show up again and again. The quota and incentive system put in place by... View Details

Keywords: by Dina Gerdeman

May 2007
Article

Aspects of Endowment: A Query Theory of Value Construction

By: Eric Johnson, Gerald Häubl and Anat Keinan

How do people judge the monetary value of objects? One clue is provided by the typical endowment study (D. Kahneman, J. L. Knetsch, & R. H. Thaler, 1991), in which participants are randomly given either a good, such as a coffee mug, that they may later sell ("sellers")... View Details

Keywords: Profit; Forecasting and Prediction; Theory; Valuation; Loss; Ownership; Decision Choices and Conditions

Find at Harvard

2020
Working Paper

Aggregate and Firm-Level Stock Returns During Pandemics, in Real Time

By: Laura Alfaro, Anusha Chari, Andrew Greenland and Peter K. Schott

We show that unexpected changes in the trajectory of COVID-19 infections predict U.S. stock returns, in real time. Parameter estimates indicate that an unanticipated doubling (halving) of projected infections forecasts next-day decreases (increases) in aggregate U.S.... View Details

Keywords: COVID-19; Stock Returns; Health Pandemics; Stocks; Investment Return; Forecasting and Prediction