Although there were no significant associations with all physical test limitations and golf swing faults, there were higher odds ratios for those who cannot perform certain physical tests and the likelihood they will present with a particular golf swing fault as compared with those who can correctly perform the physical test (Table 3). For example, a golfer who is unable to perform an overhead deep squat is 2 times more likely to early hip extend in the golf swing. In addition, a golfer who is unable to perform a toe touch is 6 times more likely to early hip extend. A golfer who is unable to balance on their left leg is 3 times more likely to early hip extend, lose posture, and slide during the golf swing. A golfer who is unable to bridge on the right side is 5 times more likely to early hip extend, 6 times more likely to lose posture (Table 3), and 2 times more likely to slide during the golf swing.
Many researchers have studied the golf swing and certain physical parameters of strength, flexibility, and balance to determine if those can improve performance (1–7). However, those studies typically examined the various physical characteristics and used driving distance as the outcome measure for performance. Until now, there has not been any research showing how specific physical limitations in strength, flexibility, or balance may directly affect one's ability to swing the golf club with proper mechanics. If there are indeed physical limitations that would present themselves in specific golf swing faults, then this will have a direct effect on a golfer's performance as it relates to accuracy in ball striking. The top 4 most frequent physical limitations in the current sample of golfers were the inability to complete an adequate test for overhead deep squat, toe touch, single leg balance, and bridge.
The overhead deep squat is a test that can identify core/abdominal weakness, core/gluteal weakness, lower extremity inflexibility, as well as scapular stability, and shoulder joint range of motion. Without mobility in these areas, in addition to core weakness, a golfer will struggle to maintain proper position and rotation in the golf swing. A deep squat is also a great developer of leg strength, specifically in the gluteus maximus, quadriceps, and hamstrings. For the golfers who could not complete an overhead deep squat, 67% of those demonstrated early hip extension in the golf swing (Figure 2), 54% demonstrated loss of posture (Figure 3), and 29% had a slide (Figure 4) during the downswing. Thus, we see that the inability to complete an overhead deep squat has an effect on various golf swing mechanics. The inability to overhead deep squat and the increased likelihood to early hip extend is important for the golf fitness professional to understand. Early hip extension does not allow a golfer to drop the arms down in the proper slot during the downswing, and thus many shots may get “blocked” or hook. Early hip extension during the downswing may also affect one's ability to properly rotate their hips during the swing, which could lead to a slide during the downswing. For example, of the golfers who could not perform an overhead deep squat, 29% demonstrated a slide during the golf swing. Examples such as this provide evidence that physical abilities are strongly tied to making consistent contact with the golf ball for optimal distance and accuracy, and thus performance.
The toe touch test is an assessment of hamstring and spinal flexibility. If a golfer has tight hamstrings, this may pull the pelvis into a posterior tilt. Not only would this affect the golfer's ability to maintain proper pelvic positions at address but also may limit the golfer's ability to rotate during the downswing because of the posterior tilt. If the golfer is unable to rotate their pelvis when initiating the downswing, they are more likely to thrust forward, presenting early hip extension. In our study, there was a significant association with the inability to toe touch and the presentation of early hip extension during the golf swing (Table 3).
Single leg balance was another physical limitation seen frequently in our golfers. Previous research has shown single leg balance to be better in more proficient golfers in comparison to higher handicap golfers (6). For the golf fitness professional, it is important to understand how this task relates to a golfer's ability. If a right-handed golfer cannot maintain balance on the left side as they post onto the lead leg, this disrupts the golf swing. In our study, we found that those who are unable to successfully perform single leg balance on the left side are 3 times more likely to early hip extend, lose posture, and slide during the golf swing (Table 3).
The bridge test is primarily a test of gluteal strength as one aims to maintain hip extension while in a supine position. The right gluteus maximus is important for right-handed golfers because they initiate the downswing and need to externally rotate and extend their hip to help drive the pelvis toward the target. If there were a weakness in the right gluteus maximus, this would limit the golfer's ability to initiate rotation and would thus thrust the pelvis forward into early hip extension. Our study found that the inability to bridge on the right side is significantly associated with both early hip extension and loss of posture in the golf swing.
Not only was early hip extension one of the predominant golf swing faults but also was loss of posture. Loss of posture during the golf swing could include a change in knee flexion, trunk flexion, or head position from the address posture to impact. Loss of posture and early hip extension are often highly associated with each other, both of which can affect timing, rhythm, and balance of the golf swing. As a golfer's hips begin to forward thrust, their spine angle will also most likely become more vertical, causing the head to also change positions, hence losing posture. Loss of posture is an indicator of an inefficient golf swing because this makes the golfer's ability to return the club on plane during the golf swing becomes less likely, resulting in poorer golf shots. Furthermore, like the early hip extension, this forces the player to rely more on the hands to square the clubface at impact.
The third most prevalent golf swing fault was slide during the downswing. A slide is an excessive lateral shift of the hips toward the target on the downswing. A slide makes it challenging to stabilize the lower body during the downswing, which then takes away power from the upper body, or the transfer of momentum. This lateral shift equates to the body and hands being too far ahead and the club often does not catch up, generating a feeling of leaving the club “behind” the golfer, making it difficult to square the face in relation to the swing path. In our study, we found that golfers who could not perform various physical tests presented with a slide during the downswing. For example, 29% who could not overhead deep squat, 35% who could not toe touch, 33% who could not single leg balance on right, 45% who could not single leg balance on left, 36% who could not bridge on right side, and 37% who could not bridge on left side had a slide during the downswing. Thus, these physical abilities should be addressed by the golf fitness professional to help prevent a golfer from sliding during the golf swing.
Typically, if a golfer cannot internally rotate on lead hip, they may begin to slide the pelvis forward to complete the golf swing. However, in our sample of golfers, we did not find an association with limited hip internal rotation and the slide golf swing fault. The TPI test assesses lower quarter rotation in an erect weight-bearing posture (hip and knee extension). However, this does not simulate the amount of hip and knee flexion used during the golf swing. Thus, golfers may potentially have a limitation in lead hip internal rotation, which is preventing them from rotating through during the downswing but is not being detected by the TPI level 1 movement screens.
Although the TPI level 1 movement screens can detect physical limitations in isolated segments, future research should assess the body's physical abilities as a functional chain and not as independent segments or abilities. The body has to perform a golf swing in a weight-bearing condition (as a kinetic chain), and thus the tests or assessments should mimic the task of the golfer in a more functional way, such as in the positions the golfers would need to use during the golf swing.
Strength and conditioning coaches working with golfers need to be aware of various physical limitations in strength, flexibility, and balance, and how these directly affect a golfer's swing mechanics. As a result of insufficient ability to overhead deep squat, toe touch, balance on single leg, and bridge, golfers exhibited 3 particular swing faults, which greatly impact a golfer's ability to swing the club effectively. Strength and conditioning coaches need to assess and correct any physical limitations and make connections with local golf teaching pros. Addressing both the physical limitations and golf swing mechanics at the same time will help the golfer perform better.
The authors would like to acknowledge and thank Dr. Sango Otiene and students of the Grand Valley State University Statistical Consulting Center for their assistance with the statistical analysis.
1. Fletcher LM, Hartwell M. Effect of an 8-week combined weights and plyometrics training program on golf drive performance
. J Strength Cond Res 18: 59–62, 2004.
2. Gergley JC. Acute effects of passive static stretching during warm-up on driver clubhead speed, distance, accuracy, and consistent ball contact in young male competitive golfers. J Strength Cond Res 23: 863–867, 2009.
3. Gordon BS, Moir GL, Davis SE, Witmer CA, Cummings DM. An investigation into the relationship of flexibility, power, and strength to club head speed in male golfers. J Strength Cond Res 23: 1606–1610, 2009.
4. Lephart SM, Smoliga JM, Meyers JB, Sell TC, Tsai YS. An eight-week golf-specific exercise program improves physical characteristics, swing mechanics, and golf performance
in recreational golfers. J Strength Cond Res 21: 860–869, 2007.
5. Moran KA, McGrath T, Marshall BM, Wallace ES. Dynamic stretching and golf swing performance
. Int J Sports Med 30: 113–118, 2009.
6. Sell TC, Tsai YS, Smoliga JM, Myers JB, Lephart SM. Strength, flexibility, and balance characteristics of highly proficient golfers. J Strength Cond Res 21: 1166–1171, 2007.
7. Thompson CJ, Myers Cobb K, Blackwel J. Functional training improves club head speed and functional fitness
in older golfers. J Strength Cond Res 21: 131–137, 2007.
Keywords:Copyright © 2014 by the National Strength & Conditioning Association.
fitness; assessment; biomechanics; performance